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Brief Note on Signals - Angular 19

Angular 19 introduces an exciting reactive primitive called signals, offering developers a simple yet powerful way to manage local state and derived values without the boilerplate of external libraries. In this blog post, we’ll explore:

What signals are in Angular 19

A detailed, working example of signals

Use cases for signals in real-world apps

Differences between signals and NgRx Store

Table of Contents

Toggle

What Are Signals?

Detailed Working Example: Counter Component

Use Cases for Signals

Signals vs NgRx Store

Conclusion

What Are Signals?

A signal is a reactive primitive for storing and tracking state in Angular 19. Under the hood, signals notify subscribers whenever their value changes, enabling automatic updates in templates and computations.

Declaration: import from @angular/core

245Functions:

signal<T>(initial: T): Creates a writable signal

computed<T>(fn: () => T): Derives a signal from other signals

effect(fn: () => void): Reacts to changes without returning a value

import signal, computed, effect from '@angular/core'; // A simple writable signal const count = signal(0); // A derived signal const doubleCount = computed(() => count() * 2); // Run an effect when `count` changes effect(() => console.log(`Count changed to $count()`); );

How It Works:

Read a signal’s value by calling it: count()

Write by invoking its setter: count.set(newValue), or via count.update(x => ...).

Subscriptions: computed and effect track dependencies and re-run when inputs change.

Detailed Working Example: Counter Component

Let’s build a reusable counter using Angular 19 signals.

// counter.component.ts import Component, signal, computed from '@angular/core'; @Component( selector: 'app-counter', template: ` <div class="counter"> <h2>Counter: count() </h2> <button (click)="increment()">Increment</button> <button (click)="decrement()">Decrement</button> <p>Double: double() </p> </div> `, styles: [`.counter text-align: center; button margin: 0 8px; `] ) export class CounterComponent // 1. Create a writable signal count = signal(0); // 2. Create a derived signal double = computed(() => this.count() * 2); // 3. Methods to update increment() this.count.update(n => n + 1); decrement() this.count.update(n => n - 1);

Explanation:

count holds the current value.

double automatically recomputes when count changes.

Calling this.count() in template triggers change detection.

Use Cases for Signals

Local Component State: Manage form inputs, toggles, and counters without services.

Derived State: Compute totals, filters, or transforms via computed.

Side Effects: Run business logic when state changes using effect.

Lightweight Stores: Create scoped stores per feature module instead of a global store.

Pro Tip: Combine signals with Angular’s Dependency Injection to provide feature-level state containers.

Signals vs NgRx Store

Feature Signals NgRx Store Boilerplate Minimal; no actions or reducers Requires actions, reducers, effects, selectors Scope Local or feature-level Global or large-scale apps API Surface Signal,computed, effect createEffect, createAction, createReducer, etc. Learning Curve Low; JavaScript API Higher; Flux architecture Debug Tools Basic logging via effects Redux DevTools, time-travel debugging Use Cases Simple, reactive state & derived values Complex state flows, undo-redo, advanced debugging

When to Choose What?

Use signals for local state, quick prototypes, and smaller feature modules.

Opt for NgRx Store in large enterprise apps needing advanced tooling, middleware, and global consistency.

Conclusion

Angular 19 signals offer a declarative, lightweight, and expressive approach to reactive state in Angular applications. Whether you need simple component state or derived data flows, signals can simplify your code and improve performance. For global, complex state management with robust tooling, NgRx Store remains invaluable—but now you have an elegant, built-in alternative for many scenarios. Please feel free to add comments if any queries or suggestions.

Keep learning & stay safe 😉

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What’s New in Angular 20

Testing and Debugging Angular 19 Apps

Performance Optimization and Best Practices in Angular 19

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What's New in Angular 20: Key Features, Differences from Angular 19, and Major Benefits

​Angular 20, released in May 2025, marks a significant advancement in the Angular framework, introducing performance enhancements, developer-centric features, and architectural refinements. This post delves into the new features of Angular 20, contrasts them with Angular 19, and outlines the major benefits of upgrading.​

Table of Contents

Toggle

Key Features in Angular 20

1. Enhanced Ivy Compiler

2. Improved Developer Experience

3. Better Integration with PaaS

4. New Components and Libraries

5. Enhanced Security Features

Differences Between Angular 19 and Angular 20

Major Benefits of Angular 20

Upgrading to Angular 20

Final Thought

Key Features in Angular 20

1. Enhanced Ivy Compiler

Angular 20 continues to optimize the Ivy compiler, resulting in faster load times and reduced memory consumption. These improvements are particularly beneficial for applications deployed in Platform-as-a-Service (PaaS) environments.​

2. Improved Developer Experience

The Angular CLI has been updated with new commands and options, streamlining the development process. Notably, the ng generate command now supports more templates and configurations, facilitating quicker project scaffolding.​

3. Better Integration with PaaS

Angular 20 offers improved integration with popular PaaS providers like Heroku, AWS Elastic Beanstalk, and Google App Engine. The new Angular Deploy tool simplifies the deployment process to these platforms.​

4. New Components and Libraries

The release introduces new Material Design components, enhancing UI development. Additionally, the Angular Component Dev Kit (CDK) has been expanded with new tools and utilities, aiding in the creation of custom, performant, and accessible components.​

5. Enhanced Security Features

Angular 20 includes built-in protections against common web vulnerabilities like Cross-Site Scripting (XSS) and Cross-Site Request Forgery (CSRF). The framework now supports Content Security Policy (CSP), allowing developers to define and enforce security policies effectively.​

6. Improved Testing and Debugging

Testing utilities have been enhanced, with improvements to Angular TestBed and new Protractor integration, making it easier to write and run tests.​

  Differences Between Angular 19 and Angular 20

Feature Angular 19 Angular 20 Standalone Components Default behavior Continued support with enhancements Reactivity Introduction of linkedSignal and resource() APIs Further optimizations in reactivity TypeScript Support Up to TypeScript 5.6 Improved TypeScript support with better type checking CLI Enhancements AI-driven suggestions and automation New commands and options for streamlined development Security AutoCSP for content security policies Built-in protections against XSS and CSRF, with CSP support Testing Utilities Introduction of new testing tools Enhanced TestBed and Protractor integration

Major Benefits of Angular 20

Performance Optimization: The refined Ivy compiler and improved reactivity lead to faster load times and efficient memory usage.​

Enhanced Developer Productivity: Updated CLI commands and better TypeScript support streamline the development workflow.​

Seamless Deployment: Improved integration with PaaS providers and the Angular Deploy tool simplify the deployment process.​

Robust Security: Built-in protections against common vulnerabilities and CSP support enhance application security.​

Improved Testing: Enhanced testing utilities facilitate easier and more reliable application testing.​

Upgrading to Angular 20

To upgrade your Angular application to version 20, follow these

Use the following npm command to update Angular CLI:

Global Update:

npm install -g @angular/cli

Angular CLI in Your Project:

ng update @angular/cli

Angular Core and Dependencies:

ng update @angular/core

Verify Application Functionality: Run your application and ensure all functionalities work as expected.

Final Thought

Angular 20 brings substantial improvements in performance, security, and developer experience. Upgrading to this version ensures your applications are built with the latest advancements, providing a robust foundation for future development.​

If you need assistance with the upgrade process or have any questions, feel free to ask!

Keep learning & stay safe 😉

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Testing and Debugging Angular 19 Apps

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Real-World Projects and Use Cases with Angular 19

Angular 19 is a powerful framework that continues to be a popular choice for building dynamic, scalable, and responsive web applications. Whether you are working on an enterprise-grade platform or a personal project, Angular 19 offers the tools and features needed to build high-performance applications. In this blog, we will explore some real-world projects and use cases to understand how Angular 19 can be utilized effectively.

Table of Contents

Toggle

Why Choose Angular 19 for Real-World Projects?

Popular Real-World Projects Built with Angular

Use Case 1: Real-Time Data Dashboards

Key Features:

Example Code:

Use Case 2: E-Commerce Applications

Key Features:

Example Library:

Use Case 3: Progressive Web Applications (PWAs)

Key Features:

How to Set Up PWA Support:

Best Practices for Real-World Angular Projects

Final Thoughts

Why Choose Angular 19 for Real-World Projects?

Angular 19 comes with several improvements that make it ideal for real-world applications. These include enhanced performance, robust state management, and a modular architecture. Choosing Angular 19 ensures scalability, maintainability, and optimal performance, making it the go-to framework for large-scale and enterprise applications.

Popular Real-World Projects Built with Angular

Enterprise Dashboards and Admin Panels

Angular 19’s modular structure and built-in RxJS support make it perfect for dashboards.

Real-time data handling with WebSockets and reactive programming.

Example: Google Analytics Dashboard

E-Commerce Platforms

Dynamic UI/UX with Angular Material and seamless state management with NgRx.

Real-time inventory updates and interactive checkout experiences.

Example: IKEA’s in-store digital catalog, internal dashboards at Deutsche Bank and Forbes

Content Management Systems (CMS)

Powerful routing and navigation for dynamic content loading.

Example: Contentful CMS with Angular Frontend

Single Page Applications (SPAs)

Enhanced routing and state management.

High performance with Ahead-of-Time (AOT) compilation.

Example: Weather Applications and Task Managers

Use Case 1: Real-Time Data Dashboards

Real-time dashboards are essential for monitoring business metrics and system performance. Angular 19 is ideal for creating interactive and dynamic dashboards due to its robust data binding and component-based architecture.

Key Features:

Live Data Feeds: Integrate WebSocket for live updates.

Charts and Graphs: Use libraries like Chart.js and D3.js.

Responsive Layout: Angular Material ensures mobile compatibility.

Example Code:

import Component, OnInit from '@angular/core'; import WebSocketService from './web-socket.service'; @Component( selector: 'app-dashboard', templateUrl: './dashboard.component.html' ) export class DashboardComponent implements OnInit data: any[] = []; constructor(private wsService: WebSocketService) ngOnInit(): void this.wsService.getData().subscribe((message) => this.data.push(message); );

Use Case 2: E-Commerce Applications

Angular 19’s ability to manage complex states makes it a prime choice for e-commerce apps. Using NgRx for state management allows for predictable and efficient handling of data, while Angular Universal enables server-side rendering for better SEO.

Key Features:

Product Catalog and Search Functionality

Cart and Checkout with Secure Payment Integration

User Authentication and Profile Management

Example Library:

NgRx Store: Efficient state management

Angular Universal: Improves SEO and page load speed

Use Case 3: Progressive Web Applications (PWAs)

PWAs provide a native app-like experience directly from the browser. Angular 19’s PWA support includes offline functionality and responsive layouts.

Key Features:

Offline Access: Uses Service Workers

Push Notifications: Engages users even when the app is not active

Fast Load Times: Optimized for speed

How to Set Up PWA Support:

ng add @angular/pwa

  Best Practices for Real-World Angular Projects

Use Lazy Loading: Reduces initial load time by loading modules as needed.

Optimize Change Detection: Use OnPush strategy where applicable.

Implement State Management: Use NgRx for predictable state handling.

Enable Ahead-of-Time (AOT) Compilation: Reduces load time and boosts performance.

Utilize Angular Universal for SEO: Improve page speed and visibility on search engines.

Final Thoughts

Angular 19’s advanced features and robust architecture make it an ideal choice for building large-scale and performance-oriented applications. Whether it’s an e-commerce platform, real-time dashboard, or PWA, leveraging Angular 19 ensures scalability and maintainability.

Keep learning & stay safe 😉

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Building and Deploying Angular 19 Apps

Efficiently building and deploying Angular 19 applications is crucial for delivering high-performance, production-ready web applications. In this blog, we will cover the complete process of building and deploying Angular 19 apps, including best practices and optimization tips.

Table of Contents

Toggle

Why Building and Deploying Matters

Preparing Your Angular 19 App for Production

Building Angular 19 App

Key Optimizations in Production Build:

Configuration Example:

Deploying Angular 19 App

Deploying on Firebase Hosting

Deploying on AWS S3 and CloudFront

Automating Deployment with CI/CD

Example with GitHub Actions

Best Practices for Building and Deploying Angular 19 Apps

Final Thoughts

Why Building and Deploying Matters

Building and deploying are the final steps of the development lifecycle. Building compiles your Angular project into static files, while deploying makes it accessible to users on a server. Proper optimization and configuration ensure faster load times and better performance.

Preparing Your Angular 19 App for Production

Before building the application, make sure to:

Update Angular CLI: Keep your Angular CLI up to date.

npm install -g @angular/cli

Optimize Production Build: Enable AOT compilation and minification.

Environment Configuration: Use the correct environment variables for production.

Building Angular 19 App

To create a production build, run the following command:

ng build --configuration=production

This command generates optimized files in the dist/ folder.

Key Optimizations in Production Build:

AOT Compilation: Reduces bundle size by compiling templates during the build.

Tree Shaking: Removes unused modules and functions.

Minification: Compresses HTML, CSS, and JavaScript files.

Source Map Exclusion: Disables source maps for production builds to improve security and reduce file size.

Configuration Example:

Modify the angular.json file to customize production settings:

"configurations": "production": "optimization": true, "outputHashing": "all", "sourceMap": false, "namedChunks": false, "extractCss": true, "aot": true, "fileReplacements": [ "replace": "src/environments/environment.ts", "with": "src/environments/environment.prod.ts" ]

    Deploying Angular 19 App

Deployment options for Angular apps include:

Static Web Servers (e.g., NGINX, Apache)

Cloud Platforms (e.g., AWS S3, Firebase Hosting)

Docker Containers

Serverless Platforms (e.g., AWS Lambda)

Deploying on Firebase Hosting

Install Firebase CLI:

npm install -g firebase-tools

Login to Firebase:

firebase login

Initialize Firebase Project:

firebase init hosting

Deploy the App:

firebase deploy

Deploying on AWS S3 and CloudFront

Build the Project:

ng build --configuration=production

Upload to S3:

aws s3 sync ./dist/my-app s3://my-angular-app

Configure CloudFront Distribution: Set the S3 bucket as the origin.

Automating Deployment with CI/CD

Setting up a CI/CD pipeline ensures seamless updates and faster deployments.

Example with GitHub Actions

Create a .github/workflows/deploy.yml file:

name: Deploy Angular App on: [push] jobs: build-and-deploy: runs-on: ubuntu-latest steps: - uses: actions/checkout@v2 - name: Set up Node.js uses: actions/setup-node@v2 with: node-version: '18' - run: npm install - run: npm run build -- --configuration=production - name: Deploy to S3 run: aws s3 sync ./dist/my-app s3://my-angular-app --delete

Best Practices for Building and Deploying Angular 19 Apps

Optimize for Production: Always use AOT and minification.

Use CI/CD Pipelines: Automate the build and deployment process.

Monitor Performance: Utilize tools like Lighthouse to analyze performance.

Secure the Application: Enable HTTPS and configure secure headers.

Cache Busting: Use hashed filenames to avoid caching issues.

Containerize with Docker: Simplifies deployments and scales easily.

Final Thoughts

Building and deploying Angular 19 applications efficiently can significantly enhance performance and maintainability. Following best practices and leveraging cloud hosting services ensure that your app is robust, scalable, and fast. Start building your next Angular project with confidence!

Keep learning & stay safe 😉

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Testing and Debugging Angular 19 Apps

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Testing and Debugging Angular 19 Apps

Testing and debugging are essential practices in the software development lifecycle, especially when building complex applications using Angular 19. By employing effective testing strategies and debugging techniques, developers can ensure that their applications are reliable, efficient, and free of critical issues. In this blog, we will explore the best practices for testing and debugging Angular 19 applications.

Table of Contents

Toggle

Why Testing and Debugging Matter

Types of Testing in Angular 19

Testing Tools for Angular 19

Setting Up Unit Testing

Example Unit Test

Running Unit Tests

End-to-End (E2E) Testing with Cypress

Setting Up Cypress

Sample E2E Test with Cypress

Debugging Angular 19 Applications

1. Angular DevTools

2. Console Logging

3. Breakpoints in Browser DevTools

4. Debugging RxJS Streams

Best Practices for Testing and Debugging

Final Thoughts

Why Testing and Debugging Matter

Testing and debugging help catch issues early in development, reducing maintenance costs and ensuring a stable application. Angular 19 offers powerful tools for both unit and end-to-end (E2E) testing, allowing developers to write and execute tests efficiently.

Types of Testing in Angular 19

Unit Testing: Testing individual components, services, or functions.

Integration Testing: Verifying the interaction between different components.

End-to-End (E2E) Testing: Testing the entire application workflow.

Performance Testing: Ensuring the application meets performance benchmarks.

Testing Tools for Angular 19

Karma: Test runner to execute unit tests.

Jasmine: Behavior-driven development framework.

Jest: An alternative test framework known for faster unit test execution.

Cypress: Modern and popular E2E testing framework replacing Protractor.

Playwright: An alternative E2E testing tool for cross-browser testing.

Setting Up Unit Testing

Angular projects come pre-configured with Jasmine and Karma. To create a new component with test files:

ng generate component my-component

This generates a my-component.component.spec.ts file, which is the unit test file.

Example Unit Test

import ComponentFixture, TestBed from '@angular/core/testing'; import MyComponent from './my-component.component'; describe('MyComponent', () => let component: MyComponent; let fixture: ComponentFixture<MyComponent>; beforeEach(async () => await TestBed.configureTestingModule( declarations: [MyComponent], ).compileComponents(); fixture = TestBed.createComponent(MyComponent); component = fixture.componentInstance; fixture.detectChanges(); ); it('should create the component', () => expect(component).toBeTruthy(); ); );

Running Unit Tests

Use the following command to run unit tests:

ng test

  End-to-End (E2E) Testing with Cypress

Protractor has been deprecated in Angular 15+, and Cypress has become a preferred tool for E2E testing in Angular 19 applications.

Setting Up Cypress

Install Cypress using the Angular CLI or npm:

ng add @cypress/schematic

To run Cypress tests:

npx cypress open

Sample E2E Test with Cypress

describe('App Homepage', () => it('should display the welcome message', () => cy.visit('/'); cy.contains('h1', 'Welcome to Angular 19!'); ); );

    Debugging Angular 19 Applications

Debugging is crucial for identifying and fixing issues during development. Angular 19 provides multiple tools to aid in debugging.

1. Angular DevTools

Angular DevTools is a Chrome extension that offers profiling and debugging capabilities.

Component Explorer: View component hierarchy.

Profiler: Analyze performance bottlenecks.

Change Detection Debugging: Monitor change detection cycles.

2. Console Logging

Logging with console.log() is a quick way to inspect data:

console.log('Component initialized', this.data);

3. Breakpoints in Browser DevTools

Set breakpoints directly in TypeScript files to pause execution and inspect variables.

4. Debugging RxJS Streams

Use the tap() operator to inspect stream data:

of(1, 2, 3).pipe( tap(value => console.log('Value:', value)) ).subscribe();

  Best Practices for Testing and Debugging

Isolate Unit Tests: Keep unit tests independent from external services.

Mock Dependencies: Use mocks for HTTP and service calls to ensure consistent results.

Automate Testing: Integrate testing into your CI/CD pipeline.

Code Coverage Reports: Use coverage reports to identify untested code.

Debug Efficiently: Use Angular DevTools for advanced debugging.

Test for Edge Cases: Ensure tests cover all possible scenarios.

Final Thoughts

Testing and debugging are indispensable for maintaining robust Angular 19 applications. By implementing best practices and leveraging tools like Jasmine, Karma, Cypress, and Angular DevTools, developers can ensure their applications are reliable, maintainable, and performant.

Keep learning & stay safe 😉

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UI/UX with Angular Material in Angular 19

Creating a smooth and visually appealing user interface (UI) is essential for modern web applications. Angular Material, a UI component library for Angular, offers pre-built and customizable UI components that follow Google’s Material Design principles. In this blog, we will explore how to leverage Angular Material to enhance UI/UX in Angular 19 applications.

Table of Contents

Toggle

Why Use Angular Material?

Key Features of Angular Material

Getting Started with Angular Material

Applying Angular Material Theme

Building a Responsive Navigation Bar

Example Implementation:

Output:

Enhancing Forms with Angular Material

Code Example:

Best Practices for UI/UX:

Advanced Angular Material Techniques

1. Custom Themes and Palettes

2. Animations and Transitions

Best Practices for Using Angular Material

Final Thoughts

Why Use Angular Material?

Angular Material provides a set of reusable, well-designed components that save development time while maintaining a consistent and attractive look and feel. It is optimized for responsiveness and accessibility, making it an excellent choice for professional-grade applications.

Key Features of Angular Material

Pre-built Components: Includes buttons, dialogs, toolbars, and more.

Responsive Layouts: Supports flex layouts and media queries.

Customizable Themes: Easily adapt colors and typography.

Accessibility Support: Built with ARIA attributes and keyboard navigation.

Integration with Angular Forms: Smooth form validation and error handling.

Getting Started with Angular Material

First, install Angular Material and related packages:

ng add @angular/material

Next, choose a pre-built theme during installation or customize one later. Import the Material module in your app module:

import NgModule from '@angular/core'; import MatButtonModule from '@angular/material/button'; import MatToolbarModule from '@angular/material/toolbar'; @NgModule( imports: [ MatButtonModule, MatToolbarModule ], exports: [ MatButtonModule, MatToolbarModule ] ) export class MaterialModule

Applying Angular Material Theme

In your global stylesheet, include the chosen theme:

@import '~@angular/material/prebuilt-themes/indigo-pink.css';

  Building a Responsive Navigation Bar

A well-designed navigation bar enhances user experience by providing intuitive navigation.

Example Implementation:

<mat-toolbar color="primary"> <span>My Angular App</span> <span class="spacer"></span> <button mat-button routerLink="/home">Home</button> <button mat-button routerLink="/about">About</button> </mat-toolbar>

.spacer flex: 1 1 auto;

Output:

The navigation bar displays a title and navigation buttons, styled according to the Material theme.

Enhancing Forms with Angular Material

Angular Material forms provide better user interaction and validation feedback. To create a form with input fields and a submit button:

Code Example:

<mat-card> <form> <mat-form-field> <mat-label>Username</mat-label> <input matInput placeholder="Enter your username"> </mat-form-field> <mat-form-field> <mat-label>Password</mat-label> <input matInput type="password" placeholder="Enter your password"> </mat-form-field> <button mat-raised-button color="accent">Submit</button> </form> </mat-card>

Best Practices for UI/UX:

Use Accessible Color Combinations: Ensure readability.

Provide Visual Feedback: Show loading indicators during operations.

Maintain Consistency: Keep the UI consistent across different screens.

Advanced Angular Material Techniques

1. Custom Themes and Palettes

Create a custom theme to match your branding:

@use '@angular/material' as mat; $custom-primary: mat.define-palette(mat.$indigo-palette); $custom-accent: mat.define-palette(mat.$pink-palette, A200, A100, A400); $theme: mat.define-light-theme(( color: ( primary: $custom-primary, accent: $custom-accent, ) )); @include mat.all-component-themes($theme);

2. Animations and Transitions

Angular Material provides built-in animations for smoother transitions between states.

import trigger, state, style, transition, animate from '@angular/animations'; @Component( animations: [ trigger('fadeIn', [ state('void', style( opacity: 0 )), transition(':enter', [animate('500ms ease-in')]) ]) ] ) export class AnimatedComponent

  Best Practices for Using Angular Material

Minimize Bundle Size: Import only the necessary components.

Use Angular CDK for Advanced Layouts: Leverage the Component Dev Kit for more control.

Follow Material Design Guidelines: Maintain consistency with Google’s design principles.

Optimize for Performance: Use OnPush change detection where applicable.

Maintain Accessibility Standards: Ensure ARIA roles and attributes are correctly applied.

Final Thoughts

Angular Material in Angular 19 empowers developers to build visually stunning and responsive applications with minimal effort. By following best practices and leveraging powerful components, you can create a professional and consistent user experience that aligns with modern UI/UX standards.

Keep learning & stay safe 😉

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Performance Optimization and Best Practices in Angular 19

Angular 19 has brought several improvements to performance and efficiency, but even with these enhancements, developers must follow best practices to build fast and responsive applications. In this blog, we will explore performance optimization techniques and best practices to maximize the speed and efficiency of your Angular 19 applications.

Table of Contents

Toggle

Why Performance Optimization Matters

Key Performance Optimization Techniques in Angular 19

1. Lazy Loading of Modules

Implementation Example:

2. Using OnPush Change Detection

How to Use OnPush:

3. Ahead-of-Time (AOT) Compilation

Enable AOT in Angular CLI:

Benefits of AOT:

4. Tree Shaking to Remove Unused Code

Command to Enable Tree Shaking:

5. Minimizing Bundle Size with Webpack

Example Configuration:

Advanced Techniques for Performance Boost

1. Preloading Strategies

2. Optimizing Change Detection with Signals

Best Practices for Performance Optimization

Final Thoughts

Why Performance Optimization Matters

Performance is a crucial factor in user experience, affecting how smoothly an application runs and how users perceive its responsiveness. Poor performance can lead to high bounce rates and lower engagement, making optimization a priority for developers.

Key Performance Optimization Techniques in Angular 19

Angular 19 provides numerous built-in features and practices to boost performance. Let’s explore some of the most effective ones.

1. Lazy Loading of Modules

Lazy loading improves performance by loading feature modules only when needed. This reduces the initial load time, making the application faster.

Implementation Example:

const routes: Routes = [ path: 'dashboard', loadChildren: () => import('./dashboard/dashboard.module').then(m => m.DashboardModule) ];

By splitting the app into smaller, lazy-loaded modules, the application only loads essential components at startup, improving performance significantly.

2. Using OnPush Change Detection

The default change detection strategy in Angular checks the entire component tree for changes, which can be resource-intensive. OnPush detection optimizes this by checking only when input properties change.

How to Use OnPush:

@Component( selector: 'app-optimized', templateUrl: './optimized.component.html', changeDetection: ChangeDetectionStrategy.OnPush ) export class OptimizedComponent

  3. Ahead-of-Time (AOT) Compilation

AOT compiles the application during the build process, resulting in smaller, faster JavaScript bundles.

Enable AOT in Angular CLI:

ng build --aot

Benefits of AOT:

Faster rendering

Early detection of template errors

Better security with precompiled templates

4. Tree Shaking to Remove Unused Code

Tree shaking eliminates unused JavaScript code from the final bundle. Angular’s build optimizer automatically performs tree shaking when building for production.

Command to Enable Tree Shaking:

ng build --prod

  5. Minimizing Bundle Size with Webpack

Webpack helps reduce the size of JavaScript bundles through minification and compression. Use Angular CLI to configure Webpack optimizations.

Example Configuration:

"optimization": "minimize": true, "runtimeChunk": true

  Advanced Techniques for Performance Boost

1. Preloading Strategies

Use Angular’s preloading strategies to load modules in the background after the application starts.

imports: [ RouterModule.forRoot(routes, preloadingStrategy: PreloadAllModules ) ]

2. Optimizing Change Detection with Signals

Angular 19 introduces signals to optimize change detection without relying on manual subscriptions.

Best Practices for Performance Optimization

Use TrackBy in NgFor: Improve performance when rendering large lists.

Debounce User Inputs: Limit the frequency of input processing.

Unsubscribe from Observables: Prevent memory leaks by unsubscribing when components are destroyed.

Minify CSS and JavaScript: Use build tools to compress assets.

Leverage Browser Caching: Configure HTTP caching to reduce redundant data fetching.

Final Thoughts

Performance optimization in Angular 19 requires a blend of strategic coding practices and leveraging built-in features. By applying techniques like lazy loading, AOT compilation, and efficient change detection, developers can significantly enhance application performance and provide users with a smoother experience.

Keep learning & stay safe 😉

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Routing and Navigation Handling in Angular 19

Efficient routing and navigation are crucial for creating dynamic single-page applications (SPAs). Angular 19 offers powerful routing features that enable developers to build seamless and intuitive navigation experiences. In this blog, we will explore the fundamentals of routing in Angular 19, advanced techniques, and best practices for optimizing navigation performance.

Table of Contents

Toggle

Why Routing Matters in Angular Applications

Key Concepts of Angular 19 Routing

Setting Up Routing in Angular 19

Adding Router Outlet in Template

Advanced Routing Techniques

1. Nested Routes

2. Route Guards for Enhanced Security

3. Lazy Loading for Performance Optimization

Navigating Programmatically

Retrieving Route Parameters

Best Practices for Angular 19 Routing

Final Thoughts

Why Routing Matters in Angular Applications

Routing allows developers to build multi-page SPAs while maintaining fast performance and smooth transitions. Proper routing management ensures that users can move between pages without unnecessary reloads, enhancing the overall user experience.

Key Concepts of Angular 19 Routing

To build a robust routing system, it’s essential to understand the core components involved:

RouterModule: Configures routes at the application level.

Routes: Define paths and associated components.

RouterLink: Binds clickable links to routes.

RouterOutlet: Acts as a placeholder for routed components.

Route Guards: Control access to routes based on conditions.

Lazy Loading: Optimizes performance by loading modules only when needed.

Setting Up Routing in Angular 19

To enable routing, import the RouterModule in your app’s main module:

import NgModule from '@angular/core'; import RouterModule, Routes from '@angular/router'; import HomeComponent from './home/home.component'; import AboutComponent from './about/about.component'; const routes: Routes = [ path: '', component: HomeComponent , path: 'about', component: AboutComponent , path: '**', redirectTo: '' // Wildcard route for 404 handling ]; @NgModule( imports: [RouterModule.forRoot(routes)], exports: [RouterModule] ) export class AppRoutingModule

Adding Router Outlet in Template

<nav> <a routerLink="/">Home</a> <a routerLink="/about">About</a> </nav> <router-outlet></router-outlet>

  Advanced Routing Techniques

Angular 19 offers several advanced techniques to enhance routing functionality, including:

1. Nested Routes

Organize related components under a single parent route for better structure.

const routes: Routes = [ path: 'products', component: ProductsComponent, children: [ path: 'details/:id', component: ProductDetailsComponent , path: 'reviews', component: ProductReviewsComponent ] ];

2. Route Guards for Enhanced Security

Use route guards to control access based on conditions like authentication.

import CanActivate from '@angular/router'; export class AuthGuard implements CanActivate canActivate(): boolean return isLoggedIn();

3. Lazy Loading for Performance Optimization

Lazy loading helps reduce the initial load time by loading feature modules only when needed.

const routes: Routes = [ path: 'admin', loadChildren: () => import('./admin/admin.module').then(m => m.AdminModule) ];

  Navigating Programmatically

Sometimes navigation needs to be triggered from the code instead of template links.

import Router from '@angular/router'; constructor(private router: Router) navigateToDashboard() this.router.navigate(['/dashboard']);

Retrieving Route Parameters

Access dynamic route parameters using ActivatedRoute.

import ActivatedRoute from '@angular/router'; constructor(private route: ActivatedRoute) ngOnInit() const id = this.route.snapshot.paramMap.get('id'); console.log('Product ID:', id);

  Best Practices for Angular 19 Routing

Use Lazy Loading for Feature Modules: Improve performance by loading on demand.

Implement Route Guards for Security: Control access based on user roles or authentication.

Group Related Routes: Organize modules and routes for maintainability.

Avoid Hardcoding URLs: Use routerLink to navigate instead of plain anchor tags.

Optimize for SEO: Configure title and meta tags for better search visibility.

Final Thoughts

Routing and navigation are crucial aspects of any Angular application. Angular 19’s enhanced routing features and best practices enable developers to build scalable, efficient, and user-friendly applications. Mastering these concepts will help you create intuitive navigation experiences and optimized app performance.

Keep learning & stay safe 😉

You may like;

Advanced Concepts and Features in Angular 19

Angular 19 Forms and Validation

State Management and Data Handling in Angular 19

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State Management and Data Handling in Angular 19

Efficient state management and data handling are essential for building dynamic and responsive web applications. Angular 19 introduces new strategies and techniques that simplify managing complex state logic while improving performance and scalability. In this article, we will explore advanced state management techniques, data handling best practices, and modern libraries like NgRx and Akita that enhance data flow in Angular applications.

Table of Contents

Toggle

Why State Management Matters

Popular State Management Libraries in Angular 19

Using NgRx for State Management

Key Concepts of NgRx

Setting Up NgRx in Angular 19

Creating Actions

Defining Reducers

Using Selectors

Akita: State Management Made Simple

Key Concepts of Akita

Setting Up Akita

Creating a Store

Advanced Data Handling Techniques in Angular 19

Signal API for Real-Time Data

HttpClient for Data Fetching

Example of Using HttpClient

Handling Errors

Final Thoughts

Why State Management Matters

State management is critical in Angular applications to ensure consistent data flow and predictable behavior. Without proper management, applications can become cumbersome and prone to bugs, especially as they grow in size and complexity.

Popular State Management Libraries in Angular 19

Angular 19 supports several robust state management libraries, each with its unique features and benefits. The most commonly used libraries include:

Library Key Features Use Cases NgRx Redux-like state management, immutability, actions, and reducers Large-scale applications with complex state Akita State management with observables and entity-based architecture Medium to large applications requiring reactive state management NGXS Simple and modular state management Small to medium applications MobX Reactive state management with observables Applications requiring automatic state updates

Using NgRx for State Management

NgRx is a popular library in the Angular ecosystem for implementing reactive state management. It follows a Redux-inspired pattern, using actions, reducers, and effects.

Key Concepts of NgRx

Actions: Define what needs to change in the state.

Reducers: Handle state transitions based on actions.

Selectors: Retrieve data from the state.

Effects: Handle side effects such as HTTP requests.

Setting Up NgRx in Angular 19

To install NgRx, run the following command:

ng add @ngrx/store @ngrx/effects @ngrx/store-devtools

Creating Actions

import createAction, props from '@ngrx/store'; export const loadUsers = createAction('[User API] Load Users'); export const loadUsersSuccess = createAction('[User API] Load Users Success', props< users: any[] >());

Defining Reducers

import createReducer, on from '@ngrx/store'; import loadUsersSuccess from './user.actions'; export const initialState = users: [] ; const userReducer = createReducer( initialState, on(loadUsersSuccess, (state, users ) => ( ...state, users )) );

Using Selectors

import createSelector from '@ngrx/store'; export const selectUsers = (state: any) => state.users;

  Akita: State Management Made Simple

Akita offers a straightforward way to manage state using observables and stores. It is ideal for applications that require a reactive and modular state management approach.

Key Concepts of Akita

Stores: Hold the application state.

Queries: Select data from the store.

Entities: Manage collections of records.

Setting Up Akita

npm install @datorama/akita

Creating a Store

import Store, StoreConfig from '@datorama/akita'; export interface UserState users: string[]; @StoreConfig( name: 'user' ) export class UserStore extends Store<UserState> constructor() super( users: [] );

  Advanced Data Handling Techniques in Angular 19

Efficient data handling is vital to keep applications responsive and optimized. Angular 19 introduces improved support for handling data through:

Signal API for Real-Time Data

Signals in Angular 19 allow developers to build responsive applications by automatically tracking changes without manual subscriptions.

HttpClient for Data Fetching

Angular’s HttpClient provides a robust way to make HTTP requests while maintaining type safety and handling errors.

Example of Using HttpClient

import HttpClient from '@angular/common/http'; import Observable from 'rxjs'; constructor(private http: HttpClient) getUsers(): Observable<any[]> return this.http.get<any[]>('https://api.example.com/users');

Handling Errors

Use RxJS operators like catchError to manage API errors gracefully.

getUsers().pipe( catchError(error => console.error('Error fetching users', error); return of([]); ) );

Final Thoughts

State management and data handling are vital for building robust and scalable Angular applications. Angular 19’s support for libraries like NgRx and Akita, coupled with advanced data handling techniques, enables developers to build highly efficient apps. By mastering these concepts, you can create responsive and dynamic applications that cater to modern user expectations.

Keep learning & stay safe 😉

You may like:

Angular 19 Fundamentals

Advanced Concepts and Features in Angular 19

Angular 19 Forms and Validation

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Angular 19 Forms and Validation

Forms are an essential part of any web application, enabling user interaction and data submission. Angular 19 brings enhanced features for building and validating forms with improved performance and flexibility. In this article, we will explore the fundamentals of Angular 19 forms, including template-driven and reactive forms, validation techniques, and best practices.

Table of Contents

Toggle

Why Forms and Validation Matter in Angular 19

Types of Forms in Angular 19

Comparison: Template-Driven vs. Reactive Forms

Template-Driven Forms in Angular 19

Setting Up a Template-Driven Form

Handling Form Submission

Validating Template-Driven Forms

Example of Validation

Reactive Forms in Angular 19

Setting Up a Reactive Form

Reactive Form Template

Custom Validation in Angular 19

Creating a Custom Validator

Using the Custom Validator

Best Practices for Angular 19 Forms

Final Thoughts

Why Forms and Validation Matter in Angular 19

Efficient and accurate form handling is crucial for creating robust applications. With Angular 19, developers can build forms that are easy to manage, validate, and maintain. Improved form handling ensures a smooth user experience and reduces the chances of submitting incorrect data.

Types of Forms in Angular 19

Angular 19 supports two primary types of forms:

Template-Driven Forms: Ideal for simple forms and based on Angular templates.

Reactive Forms: Suitable for complex and dynamic forms with greater control and scalability.

Comparison: Template-Driven vs. Reactive Forms

Feature Template-Driven Forms Reactive Forms Setup Complexity Simple Moderate Form Control Limited Extensive Validation Declarative Programmatic Performance for Large Forms Moderate High

Template-Driven Forms in Angular 19

Template-driven forms are easier to set up and are useful for simpler form requirements. These forms rely heavily on Angular directives and are defined directly in the HTML template.

Setting Up a Template-Driven Form

<form #userForm="ngForm" (ngSubmit)="onSubmit(userForm)"> <label for="name">Name:</label> <input type="text" id="name" name="name" ngModel required /> <label for="email">Email:</label> <input type="email" id="email" name="email" ngModel required /> <button type="submit">Submit</button> </form>

Handling Form Submission

onSubmit(form: NgForm) console.log('Form Submitted', form.value);

Validating Template-Driven Forms

Validation in template-driven forms is done using Angular directives such as required, minlength, and pattern.

Example of Validation

<input type="text" name="username" ngModel required minlength="4" #username="ngModel" /> <div *ngIf="username.invalid && username.touched"> Username must be at least 4 characters long. </div>

  Reactive Forms in Angular 19

Reactive forms are highly flexible and suited for more complex scenarios. They use a model-driven approach and provide robust validation features.

Setting Up a Reactive Form

First, import the required modules:

import FormGroup, FormControl, Validators from '@angular/forms'; export class UserFormComponent userForm = new FormGroup( name: new FormControl('', [Validators.required]), email: new FormControl('', [Validators.required, Validators.email]), ); onSubmit() console.log(this.userForm.value);

Reactive Form Template

<form [formGroup]="userForm" (ngSubmit)="onSubmit()"> <label for="name">Name:</label> <input id="name" formControlName="name" /> <div *ngIf="userForm.controls.name.invalid && userForm.controls.name.touched"> Name is required. </div> <label for="email">Email:</label> <input id="email" formControlName="email" /> <div *ngIf="userForm.controls.email.invalid && userForm.controls.email.touched"> Enter a valid email. </div> <button type="submit">Submit</button> </form>

  Custom Validation in Angular 19

Custom validators allow developers to implement validation logic that suits specific requirements.

Creating a Custom Validator

import AbstractControl, ValidationErrors from '@angular/forms'; export function usernameValidator(control: AbstractControl): ValidationErrors | null const forbidden = /admin/.test(control.value); return forbidden ? forbiddenName: value: control.value : null;

Using the Custom Validator

name: new FormControl('', [Validators.required, usernameValidator])

Best Practices for Angular 19 Forms

Use Reactive Forms for Complex Scenarios: Provides better scalability and maintainability.

Implement Custom Validators: Address unique business logic.

Utilize Angular Directives: Simplify form handling.

Always Sanitize and Validate User Input: To prevent security vulnerabilities.

Test Form Behavior: Ensure form validation works as expected.

Final Thoughts

Angular 19 forms and validation offer robust features that enable developers to build efficient and secure web applications. Whether using template-driven or reactive forms, mastering form handling techniques will significantly enhance your development process.

Keep learning & stay safe 😉

You may like:

Introduction to Angular 19

Angular 19 Fundamentals

Advanced Concepts and Features in Angular 19

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Advanced Concepts and Features in Angular 19

Angular 19 introduces a plethora of advanced features designed to enhance performance, modularity, and developer experience. Understanding these concepts is crucial for building modern and efficient web applications. In this article, we will delve into the most significant advancements in Angular 19, including standalone components, the Signal API, TypeScript 5.0 integration, and improved lazy loading techniques.

Table of Contents

Toggle

Why Master Advanced Angular 19 Concepts?

Standalone Components in Angular 19

Benefits of Standalone Components

How to Implement Standalone Components

Best Practices

Signal API for Reactive Programming

Key Features of the Signal API

Implementing Signal API

Real-World Use Case

TypeScript 5.0 Integration

Benefits of TypeScript 5.0 with Angular 19

Example Usage

Improved Lazy Loading Techniques

Advantages of Improved Lazy Loading

Implementing Lazy Loading

Best Practices

Final Thoughts

Why Master Advanced Angular 19 Concepts?

Mastering advanced features not only improves application performance but also streamlines the development process. These concepts allow developers to write more modular and maintainable code, making Angular applications faster and more efficient.

Standalone Components in Angular 19

Standalone components are one of the most exciting features introduced in Angular 19. They allow developers to create components without the need for Angular modules, reducing complexity and making the codebase more maintainable.

Benefits of Standalone Components

Reduced Overhead: No need to declare components within a module.

Improved Modularity: Components become self-contained and easily reusable.

Enhanced Performance: Reduces bundle size by eliminating unnecessary imports.

How to Implement Standalone Components

Here’s a basic example of creating a standalone component:

import Component from '@angular/core'; @Component( standalone: true, selector: 'app-hello', template: '<h1>Hello, Angular 19!</h1>' ) export class HelloComponent

Best Practices

Use standalone components for lightweight, reusable elements.

Avoid unnecessary dependencies to keep components independent.

Signal API for Reactive Programming

Angular 19 introduces the Signal API, a powerful tool for handling reactive data flows. Unlike traditional observables, signals automatically track changes and update components without explicit subscriptions.

Key Features of the Signal API

Automatic Tracking: Detects changes without manual subscription.

Efficient Rendering: Reduces unnecessary updates.

Simplified State Management: Minimizes boilerplate code.

Implementing Signal API

import signal, effect from '@angular/core'; const count = signal(0); effect(() => console.log(`Count changed: $count()`)); count.set(5);

Real-World Use Case

The Signal API is perfect for state management in large-scale applications where performance is crucial.

TypeScript 5.0 Integration

Angular 19 fully supports TypeScript 5.0, offering advanced language features and improved type safety.

Benefits of TypeScript 5.0 with Angular 19

Enhanced Type Safety: Minimized runtime errors.

Improved Performance: Faster compilation times.

Advanced Syntax: Features like decorators and utility types.

Example Usage

interface User id: number; name: string; function greet(user: User): string return `Hello, $user.name!`;

  Improved Lazy Loading Techniques

Lazy loading optimizes application performance by loading modules only when needed. Angular 19 takes lazy loading a step further with more granular control.

Advantages of Improved Lazy Loading

Faster Initial Load Times: Load only essential components at startup.

Reduced Memory Usage: Keep non-essential components unloaded until required.

Dynamic Module Imports: Load components and modules on demand.

Implementing Lazy Loading

const routes: Routes = [ path: 'dashboard', loadComponent: () => import('./dashboard/dashboard.component').then(m => m.DashboardComponent) ];

Best Practices

Use lazy loading for large feature modules.

Prefetch critical components to enhance performance.

Final Thoughts

By leveraging advanced features in Angular 19, developers can build faster and more maintainable applications. Standalone components, the Signal API, TypeScript 5.0 support, and improved lazy loading techniques are crucial to staying ahead in modern web development.

Keep learning & stay safe 😉

You may like:

Introduction to Angular 19

Angular 19 Fundamentals

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Angular 19 Fundamentals

Angular 19 introduces powerful new features and enhancements that make building modern web applications more efficient and intuitive. Whether you are a beginner or an experienced developer, understanding the fundamentals of Angular 19 is essential for creating high-performance applications. In this article, we will cover the core concepts and best practices, including Angular architecture, data binding, directives, dependency injection, and Angular CLI tips and tricks.

Table of Contents

Toggle

Understanding Angular 19 Architecture

Components

Modules

Services

Templates and Metadata

Data Binding and Directives in Angular 19

Built-in Directives

Dependency Injection in Angular 19

How Dependency Injection Works

Benefits of Dependency Injection

Angular CLI Tips and Tricks

Creating a New Project

Generating Components and Services

Running and Building Projects

Linting and Formatting

Best Practices for Using Angular CLI

Final Thoughts

Understanding Angular 19 Architecture

The architecture of Angular 19 is designed to facilitate scalable and modular applications. It is built on core concepts such as Components, Modules, Templates, Metadata, and Services.

Components

Components are the building blocks of any Angular application. Each component in Angular 19 consists of three parts:

Template: Defines the view and structure of the component.

Class: Contains logic and data handling.

Metadata: Provides configuration data to Angular.

Modules

Modules group related components, services, and directives into a cohesive unit. In Angular 19, you can use both module-based and standalone components, offering flexibility and modularity.

Services

Services are used to share data and logic across multiple components. They are often used to make HTTP calls or manage data.

Templates and Metadata

Templates define the HTML structure of a component, while metadata provides Angular with the necessary information to process the component.

Data Binding and Directives in Angular 19

Data binding is an essential concept that connects the component class with its template. Angular 19 supports four types of data binding:

Interpolation: Embedding dynamic values within HTML.

<h1> title </h1>

Property Binding: Binding a DOM property to a component property.

<img [src]="imageUrl" />

Event Binding: Handling user actions like clicks.

<button (click)="handleClick()">Click Me</button>

Two-Way Binding: Synchronizing the data between the model and the view.

<input [(ngModel)]="userName" />

Built-in Directives

Angular 19 offers several built-in directives to enhance the functionality of templates:

Structural Directives: *ngIf, *ngFor, *ngSwitch

Attribute Directives: ngClass, ngStyle

Custom Directives: Creating reusable directives for custom behaviors.

Dependency Injection in Angular 19

Dependency injection (DI) is a core concept in Angular that allows services and dependencies to be injected into components and other services. Angular 19 enhances DI with improved modularity and standalone component support.

How Dependency Injection Works

DI in Angular uses the Injector to maintain a registry of services. You can specify services at the root level or within feature modules.

Benefits of Dependency Injection

Promotes code modularity.

Increases testability.

Enhances maintainability by centralizing service instances.

Angular CLI Tips and Tricks

The Angular CLI is a powerful command-line interface that simplifies development tasks. Here are some tips and tricks for using Angular CLI efficiently:

Creating a New Project

ng new my-app --routing --style=scss

Generating Components and Services

ng generate component my-component ng generate service my-service

Running and Building Projects

Development Server:

ng serve --open

Production Build:

ng build --prod

Linting and Formatting

ng lint ng format

Best Practices for Using Angular CLI

Use ng add to easily integrate libraries.

Utilize schematics to automate repetitive tasks.

Customize the configuration in angular.json for optimized builds.

Final Thoughts

Understanding Angular 19 fundamentals is crucial for building scalable and maintainable applications. By mastering components, data binding, directives, dependency injection, and the Angular CLI, developers can create robust applications that leverage modern web standards. Stay updated with Angular’s latest features and best practices to ensure your applications are efficient and maintainable.

Keep learning & stay safe 😉

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Introduction to Angular 19

Angular 19 is the latest version of the popular web application framework developed by Google. Known for its robustness and versatility, Angular continues to be a top choice for building dynamic, high-performance web applications. In this article, we will explore the new features, improvements, and benefits of upgrading to Angular 19, along with a step-by-step guide to setting up your development environment.

Table of Contents

Toggle

What’s New in Angular 19?

Performance Enhancements

Standalone Components

Signal API for Reactive Programming

TypeScript 5.0 Compatibility

Improved Lazy Loading

Why Upgrade to Angular 19?

Enhanced Performance

Modular Architecture

Modern Development Practices

Streamlined State Management

Compatibility with Existing Projects

Setting Up Your Angular 19 Development Environment

Prerequisites

Installation Steps

Verifying the Installation

Final Thoughts

What’s New in Angular 19?

Performance Enhancements

One of the most significant improvements in Angular 19 is the enhanced performance. The Angular team has worked on reducing bundle sizes, optimizing change detection, and improving lazy loading capabilities. These optimizations result in faster load times and a smoother user experience.

Standalone Components

Angular 19 introduces standalone components, allowing developers to create components without relying on Angular modules. This results in reduced complexity and more flexible component architecture. By using standalone components, developers can build lightweight and modular applications with ease.

Signal API for Reactive Programming

Angular 19 brings the powerful Signal API to the forefront, making reactive programming easier and more intuitive. This API enables efficient state management and significantly reduces unnecessary re-renders, resulting in optimized performance for complex applications.

TypeScript 5.0 Compatibility

With support for TypeScript 5.0, Angular 19 benefits from enhanced type checking and better syntax. This update allows developers to leverage modern TypeScript features, improving both development speed and code quality.

Improved Lazy Loading

Lazy loading has been further improved in Angular 19, allowing for more efficient on-demand loading of components and modules. This reduces initial load time and enhances the overall performance of large-scale applications.

Why Upgrade to Angular 19?

Enhanced Performance

Upgrading to Angular 19 means leveraging faster load times and improved responsiveness. This can significantly impact user satisfaction and reduce bounce rates on your web applications.

Modular Architecture

With standalone components, your Angular projects become more modular and maintainable. This architectural shift makes it easier to develop and scale applications.

Modern Development Practices

The integration of TypeScript 5.0 ensures that developers can use the latest language features, resulting in more robust and maintainable code.

Streamlined State Management

The new Signal API simplifies managing complex state changes, which is particularly useful in data-driven applications. This reduces code complexity and improves maintainability.

Compatibility with Existing Projects

Angular 19 is designed to be backward compatible, making it easier to migrate existing applications without breaking functionality. Detailed documentation and migration guides are available to facilitate the transition.

Setting Up Your Angular 19 Development Environment

Prerequisites

To get started with Angular 19, make sure you have the following installed:

Node.js (version 18 or above)

npm (Node Package Manager)

Angular CLI (latest version)

Installation Steps

Update Node.js to the latest version:

npm install -g npm@latest

Install Angular CLI:

npm install -g @angular/cli

Create a new Angular 19 project:

ng new my-angular-app

Navigate to your project directory and start the development server:

cd my-angular-app ng serve --open

Verifying the Installation

To verify that you have successfully installed Angular 19, open your browser and navigate to:

http://localhost:4200

You should see the default Angular welcome page.

Final Thoughts

Angular 19 represents a significant step forward with its performance improvements, standalone components, and enhanced signal API. Whether you are building new applications or upgrading existing ones, Angular 19 offers a modern and efficient development experience.

Keep learning & stay safe 😉

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How to handle Bounce and Complaint Notifications in AWS SES with SNS, SQS, and Lambda

In this article, we will discuss “how to handle complaints and bounce in AWS SES using SNS, SQS, and Lambda”. Amazon Simple Email Service (SES) is a powerful tool for sending emails, but handling bounce and complaint notifications is crucial to maintaining a good sender reputation. AWS SES provides mechanisms to capture these notifications via Amazon Simple Notification Service (SNS), Amazon Simple Queue Service (SQS), and AWS Lambda.

This article will guide you through setting up this pipeline and provide Python code to process bounce and complaint notifications and add affected recipients to the AWS SES suppression list.

Table of Contents

Toggle

Architecture Overview

Step 1: Configure AWS SES to Send Notifications

Step 2: Subscribe SQS Queue to SNS Topic

Step 3: Create a Lambda Function to Process Notifications

Python Code for AWS Lambda

Step 4: Deploy the Lambda Function

Step 5: Test the Pipeline

Conclusion

Architecture Overview

SES Sends Emails: AWS SES is used to send emails.

SES Triggers SNS: SES forwards bounce and complaint notifications to an SNS topic.

SNS Delivers to SQS: SNS publishes these messages to an SQS queue.

Lambda Processes Messages: A Lambda function reads messages from SQS, identifies bounced and complained addresses, and adds them to the SES suppression list.

Step 1: Configure AWS SES to Send Notifications

Go to the AWS SES console.

Navigate to Email Identities and select the verified email/domain.

Under the Feedback Forwarding section, set up SNS notifications for Bounces and Complaints.

Create an SNS topic and subscribe an SQS queue to it.

Step 2: Subscribe SQS Queue to SNS Topic

Create an SQS queue.

In the SNS topic settings, subscribe the SQS queue.

Modify the SQS queue’s access policy to allow SNS to send messages.

Step 3: Create a Lambda Function to Process Notifications

The Lambda function reads bounce and complaint notifications from SQS and adds affected email addresses to the AWS SES suppression list.

Python Code for AWS Lambda

import json import boto3 sqs = boto3.client('sqs') sesv2 = boto3.client('sesv2') # Replace with your SQS queue URL SQS_QUEUE_URL = "https://sqs.us-east-1.amazonaws.com/YOUR_ACCOUNT_ID/YOUR_QUEUE_NAME" def lambda_handler(event, context): messages = receive_sqs_messages() for message in messages: process_message(message) delete_sqs_message(message['ReceiptHandle']) return 'statusCode': 200, 'body': 'Processed messages successfully' def receive_sqs_messages(): response = sqs.receive_message( QueueUrl=SQS_QUEUE_URL, MaxNumberOfMessages=10, WaitTimeSeconds=5 ) return response.get("Messages", []) def process_message(message): body = json.loads(message['Body']) notification = json.loads(body['Message']) if 'bounce' in notification: bounced_addresses = [rec['emailAddress'] for rec in notification['bounce']['bouncedRecipients']] add_to_suppression_list(bounced_addresses) if 'complaint' in notification: complained_addresses = [rec['emailAddress'] for rec in notification['complaint']['complainedRecipients']] add_to_suppression_list(complained_addresses) def add_to_suppression_list(email_addresses): for email in email_addresses: sesv2.put_suppressed_destination( EmailAddress=email, Reason='BOUNCE' # Use 'COMPLAINT' for complaint types ) print(f"Added email to SES suppression list") def delete_sqs_message(receipt_handle): sqs.delete_message( QueueUrl=SQS_QUEUE_URL, ReceiptHandle=receipt_handle )

Step 4: Deploy the Lambda Function

Go to the AWS Lambda console.

Create a new Lambda function.

Attach the necessary IAM permissions:

Read from SQS

Write to SES suppression list

Deploy the function and configure it to trigger from the SQS queue.

Step 5: Test the Pipeline

Send a test email using SES to an invalid address.

Check the SQS queue for incoming messages.

Verify that the email address is added to the SES suppression list.

Conclusion

In this article, we are discussing “How to handle Bounce and Complaint Notifications in AWS SES with SNS, SQS, and Lambda”. This setup ensures that bounce and complaint notifications are handled efficiently, preventing future emails to problematic addresses and maintaining a good sender reputation. By leveraging AWS Lambda, SQS, and SNS, you can automate the process and improve email deliverability.

Keep learning and stay safe 🙂

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How to Setup and Install Next.js App?

In this article, we will discuss “How to Setup and Install Next.js App” from scratch.

Table of Contents

What is React.js and Next.js?

Why we use Next.js?

Create Next.js Project

Understanding of App Directory structure

Conclusion

What is React.js and Next.js?

“React.js” is a JavaScript library for building user interfaces (elements that users see and interacting on-screen). Basically, React provide us some helpful functions to build UI, and leaves it on us where to use those functions in the application.

“Next.js” is a React framework. It is maintained by “Vercel”. Next.js features to solve common application requirements such as routing, data fetching, integrations – all while improving the developer and end-user experience.

Why we use Next.js?

Next.js comes with the some additional features to solve come application requirements such as:

We can build SSG (Static Site Generation), SSR (Server-Side Rendering) and SPA (Single Page Application) apps.

Hot code Reloading: Reload the page when it detects any change saved.

Routing: No need to configure any route. Files put in the pages folder, create the automatic routing.

Ecosystem Compatibility: Next.js plays well with the rest of the JavaScript, Node, and React ecosystem.

Prefetching: The Link component, used to link together different pages, supports a prefetch prop which automatically prefetches page resources.

Dynamic Components: You can import JavaScript modules and React Components dynamically.

Static Exports: Using the next export command, Next.js allows you to export a fully static site from your app.

TypeScript Support: Next.js is written in TypeScript and as such comes with an excellent TypeScript support.

Automatic code splitting: Next.js, basically can do a code splitting itself, where the framework will split the code so that every page will only load required CSS and JavaScript. User can experience faster page loading.

API integrated: You can also make API in the same project as your web project.

Create Next.js Project

First, we create a new Next.js Project using following command:

npx create-next-app next-13

When we execute this command, then some questions asked on the Terminal such as: Use TypeScript, EsLint, Src directory and app directory.

As per the Next.js new version 13 some changes in folder structure seen. Such as app directory instead of pages, Layouts and many more. We will discuss those in details in my next articles.

Next Js 13 Folder Structure

Let’s run the application using following command:

npm run dev

Understanding of App Directory structure

In the app directory, we use folders to define routes, and the files inside these folders are used to define the UI. There are also special files like:

head.tsx – This file specifies the head tag for the route segment it’s defined in.

page.tsx – The file used to create the UI for a particular route.

layout.tsx – It contains the layout definition of the route and is shareable across multiple pages. They are perfect for navigation menus and sidebars. On navigation, layouts preserve state and don’t re-render. This means that when you navigate between pages that share a layout, the state remains the same.

error.tsx – This file is used to handle errors in the application. It wraps a route with the React error boundary class such that when an error occurs in that route or its children it attempts to recover from it by rendering a user-friendly error page.

loading.tsx – The loading UI is instantly loaded from the server as the route UI loads in the background. The loading UI can be a spinner or a skeleton screen. Once the route content loads, it replaces the loading UI.

template.tsx is similar to the layout.tsx file, but upon navigation, a new instance of the component is mounted and the state is not preserved. Using layouts and templates allows us to take advantage of a concept known as partial rendering. While moving between routes inside of the same folder, only the layouts and pages inside of that folder are fetched and rendered:

The app directory is still an experimental feature so we need to add the flag in the “next.config.js” file as following:

experimental: appDir: true, ,

No need to perform this action if you are selecting app directory at the time of project installation.

Conclusion

In this article, we are discussing “How to Setup and Install Next.js App”. I tired to explain the basic structure and setup a Next.js project. I hope, you like this article and learn a lot. We will discuss more on Next.js in coming articles. Please feel free to add comments if any queries or suggestions.

Keep learning and stay safe 🙂

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Difference between Kinesis Data Stream and Kinesis Firehose

In this article, we will discuss “Difference between Kinesis Data Stream and Kinesis Firehose”. Today, I will explain the difference between Kinesis Data Stream and Kinesis Firehose. AWS constantly offering the new features and functionality. Kinesis is known as highly available communication channel to stream messages between data producers and data consumers.

Data Producers: Source of data such as system or web log data, social network data, financial data, mobile app data, telemetry from connected IoT devices, or etc. Data Consumers: Data processing and storage applications such as Amazon Simple Storage Service (S3), Apache Hadoop, Apache Storm, ElasticSearch, or etc.

It is important to understand Kinesis first. Amazon Kinesis is a significant feature in AWS for easy collection, processing, and analysis of video and data streams in real-time environments. AWS Kinesis helps in real-time data ingestion with support for data such as video, audio, IoT telemetry data, application logs, analytics applications, website click-streams, and machine learning applications.

Table of Contents

Kinesis Data Stream

Amazon Kinesis Firehose

Differences Table – AWS Kinesis Data Streams and Data Firehose

Conclusion

Kinesis Data Stream

Source: Amazon Kinesis Data Stream

Amazon Kinesis Data Streams is used to collect and process large streams of data records in real time. There are no servers to manage. A typical Kinesis Data Streams application reads data from a data stream as data records. The on-demand mode eliminates the need to provision or manage capacity required for running applications. Adjust your capacity to stream gigabytes per second of data with Kinesis Data Streams. Get automatic provisioning and scaling with the on-demand mode. Pay only for what you use with Kinesis Data Streams. With the on-demand mode, you don’t need to worry about over-provisioning. Use built-in integrations with other AWS services to create analytics, server-less, and application integration solutions on AWS quickly.

You can get more details on Amazon Kinesis Data Stream.

Amazon Kinesis Firehose

Source: Amazon Kinesis Firehose

Amazon Kinesis Data Firehose is the easiest way to load streaming data into data stores and analytics tools. It is a fully managed service that makes it easy to capture, transform, and load massive volumes of streaming data from different sources into Amazon S3, Amazon Redshift, Amazon Open Search Service, Kinesis Data Analytics, generic HTTP endpoints, and etc.

You can get more details on Amazon Kinesis Firehose.

Differences Table – AWS Kinesis Data Streams and Data Firehose

Kinesis Data StreamsKinesis Data FirehoseObjectiveKinesis Data Stream service for low-latency streaming and data ingestion at scale.Data transfer service for loading streaming data into Amazon S3, Splunk, ElasticSearch, and RedShift.ProvisioningManaged service yet requires configuration for shards.Fully managed service without the need for any administration.ProcessingReal-time: processing capabilities with almost 200ms latency for classic tasks and almost 70ms latency for enhanced fan-out tasks.Near real-time: processing capabilities, depending on the buffer size or minimum buffer time of 60 seconds.Data StorageWe can configure storage for one to seven days.No option given for data storage.ScalingScaling through configuration of shards.Automated scaling, according to the demand of users.Replay CapabilitiesSupport relay capabilities.No support for relay capability.Data ProducersNeed to write code for a producer with support for IoT, SDK, Kinesis Agent, CloudWatch, and KPL.Need to write code for a producer with support for Kinesis Agent, IoT, KPL, CloudWatch, and Data Streams.Data ConsumersOpen-ended model for consumers with support for multiple consumers and destinations. Also, provides support for Spark and KCL.Close-ended model for consumers and it’s managed by Firehose. It does not provide any support for Spark or KCL.

Differences Table – AWS Kinesis Data Streams and Data Firehose

Conclusion

In this article, we are discussing “Difference between Kinesis Data Stream and Kinesis Firehose”. I hope, you like this article and learn a lot. You can choose in between AWS Kinesis Data Streams or Firehose as per your uses and requirements. Please feel free to add comments if any queries or suggestions.

Keep learning & stay safe 🙂

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New Post has been published on https://codebriefly.com/how-to-create-aws-iam-user-with-programmatic-access/

How to Create AWS IAM User with Programmatic Access

In this article, we will discuss “How to create AWS IAM user with programmatic access”. Programmatic Access user is required if we want to control AWS services from the command line interface (AWS CLI) or working with the SDK. AWS provides SDK for different languages such as PHP, Python, NodeJs and etc. When we create a programmatic access user, then AWS provides the AWS Access Key and AWS Secret Access Key. These are used by AWS CLI tools to authenticate to AWS and execute your commands. Similarly, for AWS official SDK use the same to authenticate AWS.

If you don’t have an AWS account, go ahead and create an AWS account. AWS provides most of the services under free tier plan, you can check here for more.

Steps to create AWS IAM user with programmatic access

Go to AWS Identity and Access Management (IAM) console, and from the left side menu click on the users. After that click on “Add User”.

  Create a new “User name” and allow “Programmatic access”, and click on “Next: Permissions”.

  Select “Attach existing policies directly” and in the search box write SNS, allow “AmazonSNSFullAccess” and click “Next:Tags”. Here, you can add policy as per your requirement

  Although this part this is optional for the simply I just keep it simple. You can skip this point or create a tag as shown in the following screenshot.

  Reviews the IAM user settings and permissions then click on “Crete user”.

  Congratulate you successfully create AWS Access key and Secret access key. Download the key file and open the file in your favorite text editor. Keep them secret and safe.

  Note that If you lose or forget your secret key, you cannot retrieve it. Instead, create a new access key and make the old key inactive.

Conclusion

I hope you enjoyed this article. Thank you for going through this post, hope this will helps you in your development. I will be glad if you can share this post on social network. Feel free to share your suggestions and queries in the comments area. I will share more on AWS services in my coming articles 🙂

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