#async patterns

[robomad]

Node.js Async Patterns: Callbacks to Promises

Learn how to transition from callbacks to promises in Node.js for better asynchronous code management. This guide covers the basics, benefits, and practical examples.

Introduction Asynchronous programming is a cornerstone of Node.js, allowing developers to build non-blocking, efficient applications. However, managing asynchronous code can be challenging, especially with complex nested callbacks. This guide explores the evolution of asynchronous patterns in Node.js, from callbacks to promises, providing a comprehensive understanding of how to handle…

[codemerything]

A structured way to learn JavaScript.

I came across a post on Twitter that I thought would be helpful to share with those who are struggling to find a structured way to learn Javascript on their own. Personally, I wish I had access to this information when I first started learning in January. However, I am grateful for my learning journey so far, as I have covered most topics, albeit in a less structured manner.

N/B: Not everyone learns in the same way; it's important to find what works for you. This is a guide, not a rulebook.

EASY

What is JavaScript and its role in web development?

Brief history and evolution of JavaScript.

Basic syntax and structure of JavaScript code.

Understanding variables, constants, and their declaration.

Data types: numbers, strings, boolean, and null/undefined.

Arithmetic, assignment, comparison, and logical operators.

Combining operators to create expressions.

Conditional statements (if, else if, else) for decision making.

Loops (for, while) for repetitive tasks. - Switch statements for multiple conditional cases.

MEDIUM

Defining functions, including parameters and return values.

Function scope, closures, and their practical applications.

Creating and manipulating arrays.

Working with objects, properties, and methods.

Iterating through arrays and objects.Understanding the Document Object Model (DOM).

Selecting and modifying HTML elements with JavaScript.Handling events (click, submit, etc.) with event listeners.

Using try-catch blocks to handle exceptions.

Common error types and debugging techniques.

HARD

Callback functions and their limitations.

Dealing with asynchronous operations, such as AJAX requests.

Promises for handling asynchronous operations.

Async/await for cleaner asynchronous code.

Arrow functions for concise function syntax.

Template literals for flexible string interpolation.

Destructuring for unpacking values from arrays and objects.

Spread/rest operators.

Design Patterns.

Writing unit tests with testing frameworks.

Code optimization techniques.

That's it I guess!

[this-week-in-rust]

This Week in Rust 595

Hello and welcome to another issue of This Week in Rust! Rust is a programming language empowering everyone to build reliable and efficient software. This is a weekly summary of its progress and community. Want something mentioned? Tag us at @thisweekinrust.bsky.social on Bluesky or @ThisWeekinRust on mastodon.social, or send us a pull request. Want to get involved? We love contributions.

This Week in Rust is openly developed on GitHub and archives can be viewed at this-week-in-rust.org. If you find any errors in this week's issue, please submit a PR.

Want TWIR in your inbox? Subscribe here.

Updates from Rust Community

Official

March Project Goals Update

Newsletters

The Embedded Rustacean Issue #43

Project/Tooling Updates

Shadertoys ported to Rust GPU

Meilisearch 1.14 - composite embedders, embedding cache, granular filterable attributes, and batch document retrieval by ID

rust-query 0.4: structural types and other new features

Observations/Thoughts

Rebuilding Prime Video UI with Rust and WebAssembly

ALP Rust is faster than C++

what if the poison were rust?

A surprising enum size optimization in the Rust compiler

Two Years of Rust

An ECS lite architecture

A 2025 Survey of Rust GUI Libraries

BTrees, Inverted Indices, and a Model for Full Text Search

Cutting Down Rust Compile Times From 30 to 2 Minutes With One Thousand Crates

SIMD in zlib-rs (part 1): Autovectorization and target features

Avoiding memory fragmentation in Rust with jemalloc

[video] Bevy Basics: Who Observes the Observer

Rust Walkthroughs

Rust Type System Deep Dive From GATs to Type Erasure

Async from scratch 1: What's in a Future, anyway? | natkr's ramblings

Async from scratch 2: Wake me maybe | natkr's ramblings

Building a search engine from scratch, in Rust: part 4

Pretty State Machine Patterns in Rust

[video] Build with Naz : Declarative macros in Rust

Miscellaneous

March 2025 Jobs Report

Rust resources

Crate of the Week

This week's crate is wgpu, a cross-platform graphics and compute library based on WebGPU.

Despite a lack of suggestions, llogiq is pleased with his choice.

Please submit your suggestions and votes for next week!

Calls for Testing

An important step for RFC implementation is for people to experiment with the implementation and give feedback, especially before stabilization.

If you are a feature implementer and would like your RFC to appear in this list, add a call-for-testing label to your RFC along with a comment providing testing instructions and/or guidance on which aspect(s) of the feature need testing.

No calls for testing were issued this week by Rust, Rust language RFCs or Rustup.*

Let us know if you would like your feature to be tracked as a part of this list.

RFCs

Rust

Rustup

If you are a feature implementer and would like your RFC to appear on the above list, add the new call-for-testing label to your RFC along with a comment providing testing instructions and/or guidance on which aspect(s) of the feature need testing.

Call for Participation; projects and speakers

CFP - Projects

Always wanted to contribute to open-source projects but did not know where to start? Every week we highlight some tasks from the Rust community for you to pick and get started!

Some of these tasks may also have mentors available, visit the task page for more information.

rama - add serve command to rama-cli

rama - add support for include_dir for to ServeDir and related

rama - add curl module to rama-http-types

If you are a Rust project owner and are looking for contributors, please submit tasks here or through a PR to TWiR or by reaching out on X (formerly Twitter) or Mastodon!

CFP - Events

Are you a new or experienced speaker looking for a place to share something cool? This section highlights events that are being planned and are accepting submissions to join their event as a speaker.

If you are an event organizer hoping to expand the reach of your event, please submit a link to the website through a PR to TWiR or by reaching out on X (formerly Twitter) or Mastodon!

Updates from the Rust Project

480 pull requests were merged in the last week

Compiler

detect and provide suggestion for &raw EXPR

don't suggest the use of impl Trait in closure parameter

make the compiler suggest actual paths instead of visible paths if the visible paths are through any doc hidden path

tell LLVM about impossible niche tags

remove Nonterminal and TokenKind::Interpolated

re-use Sized fast-path

Library

add core::intrinsics::simd::{simd_extract_dyn, simd_insert_dyn}

initial UnsafePinned implementation (Part 1: Libs)

polymorphize array::IntoIter's iterator impl

speed up String::push and String::insert

std: add Output::exit_ok

Cargo

added symlink resolution for workspace-path-hash

improved error message when build-dir template var is invalid

Rustdoc

search: add unbox flag to Result aliases

enable Markdown extensions when looking for doctests

Clippy

arbitrary_source_item_ordering should ignore test modules

implicit_return: better handling of asynchronous code

accept self.cmp(other).into() as canonical PartialOrd impl

add manual_abs_diff lint

consecutive returns dont decrease cognitive Complexity level anymore

consider nested lifetimes in mut_from_ref

correctly handle bracketed type in default_constructed_unit_struct

deprecate match_on_vec_items lint

do not propose to auto-derive Clone in presence of unsafe fields

fix: iter_cloned_collect false positive with custom From/IntoIterator impl

fix: map_entry: don't emit lint before checks have been performed

fix: redundant_clone false positive in overlapping lifetime

various fixes for manual_is_power_of_two

Rust-Analyzer

ast: return correct types for make::expr_* methods

add children modules feature

add normalizeDriveLetter

distribute x64 and aarch64 Linux builds with PGO optimizations

fix dyn compatibility code bypassing callable_item_signature query

fix a small bug with catastrophic effects

fix an incorrect ExpressionStore that was passed

prevent panics when there is a cyclic dependency between closures

shadow type by module

ignore errors from rustfmt which may trigger error notification

port closure inference from rustc

Rust Compiler Performance Triage

Relatively small changes this week, nothing terribly impactful (positive or negative).

Triage done by @simulacrum. Revision range: e643f59f..15f58c46

1 Regressions, 3 Improvements, 3 Mixed; 2 of them in rollups 35 artifact comparisons made in total

Full report here

Approved RFCs

Changes to Rust follow the Rust RFC (request for comments) process. These are the RFCs that were approved for implementation this week:

No RFCs were approved this week.

Final Comment Period

Every week, the team announces the 'final comment period' for RFCs and key PRs which are reaching a decision. Express your opinions now.

Tracking Issues & PRs

Rust

Split elided_lifetime_in_paths into tied and untied

check types of const param defaults

Stabilize flags for doctest cross compilation

Do not remove trivial SwitchInt in analysis MIR

Implement a lint for implicit autoref of raw pointer dereference - take 2

Implement Default for raw pointers

make abi_unsupported_vector_types a hard error

Stabilize let chains in the 2024 edition

Make closure capturing have consistent and correct behaviour around patterns

Stabilize the cell_update feature

Other Areas

*No Items entered Final Comment Period this week for Rust RFCs, Cargo, Language Team, Language Reference or Unsafe Code Guidelines.

Let us know if you would like your PRs, Tracking Issues or RFCs to be tracked as a part of this list.

New and Updated RFCs

No New or Updated RFCs were created this week.

Upcoming Events

Rusty Events between 2025-04-16 - 2025-05-14 🦀

Virtual

2025-04-16 | Virtual (Vancouver, BC, CA) | Vancouver Rust

Rust Study/Hack/Hang-out

2025-04-17 | Virtual and In-Person (Redmond, WA, US) | Seattle Rust User Group

April, 2025 SRUG (Seattle Rust User Group) Meetup

2025-04-22 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Fourth Tuesday

2025-04-23 | Virtual (Cardiff, UK) | Rust and C++ Cardiff

Beyond embedded - OS development in Rust

2025-04-24 | Virtual (Berlin, DE) | Rust Berlin

Rust Hack and Learn

2025-04-24 | Virtual (Charlottesville, VA, US) | Charlottesville Rust Meetup

Part 2: Quantum Computers Can’t Rust-Proof This!"

2025-05-03 | Virtual (Kampala, UG) | Rust Circle Meetup

Rust Circle Meetup

2025-05-05 | Virtual (Tel Aviv-Yafo, IL) | Rust 🦀 TLV

Tauri: Cross-Platform desktop applications with Rust and web technologies

2025-05-07 | Virtual (Indianapolis, IN, US) | Indy Rust

Indy.rs - with Social Distancing

2025-05-08 | Virtual (Berlin, DE) | Rust Berlin

Rust Hack and Learn

2025-05-13 | Virtual (Dallas, TX, US) | Dallas Rust User Meetup

Second Tuesday

Asia

2025-04-22 | Tel Aviv-Yafo, IL | Rust 🦀 TLV

In person Rust April 2025 at Braavos in Tel Aviv in collaboration with StarkWare

Europe

2025-04-19 | Istanbul, TR | Türkiye Rust Community

Rust Konf Türkiye

2025-04-23 | London, UK | London Rust Project Group

Fusing Python with Rust using raw C bindings

2025-04-24 | Aarhus, DK | Rust Aarhus

Talk Night at MFT Energy

2025-04-24 | Edinburgh, UK | Rust and Friends

Rust and Friends (evening pub)

2025-04-24 | Manchester, UK | Rust Manchester

Rust Manchester April Code Night

2025-04-25 | Edinburgh, UK | Rust and Friends

Rust and Friends (daytime coffee)

2025-04-26 | Stockholm, SE | Stockholm Rust

Ferris' Fika Forum #11

2025-04-29 | London, UK | Rust London User Group

LDN Talks April 2025 Community Showcase

2025-04-29 | Paris, FR | Rust Paris

Rust meetup #76

2025-04-30 | Frankfurt, DE | Rust Rhein-Main

Kubernetes Operator in Rust

2025-05-01 | Nürnberg, DE | Rust Nuremberg

Hackers Hike 0x0

2025-05-06 - 2025-05-07 | Paris, FR | WebAssembly and Rust Meetup

GOSIM AI Paris 2025

2025-05-06 | Paris, FR | WebAssembly and Rust Meetup (Wasm Empowering AI)

GOSIM AI Paris 2025 (Discount available)

2025-05-07 | Madrid, ES | MadRust

VII Lenguajes, VII Perspectivas, I Problema

2025-05-07 | Oxford, UK | Oxford Rust Meetup Group

Oxford Rust and C++ social

2025-05-08 | Gdansk, PL | Rust Gdansk

Rust Gdansk Meetup #8

2025-05-08 | London, UK | London Rust Project Group

Adopting Rust (Hosted by Lloyds bank)

2025-05-13 | Amsterdam, NL | RustNL

RustWeek 2025 announcement

2025-05-13 - 2025-05-17 | Utrecht, NL | Rust NL

RustWeek 2025

2025-05-14 | Reading, UK | Reading Rust Workshop

Reading Rust Meetup

North America

2025-04-17 | Mountain View, CA, US | Hacker Dojo

RUST MEETUP at HACKER DOJO

2025-04-17 | Nashville, TN, US | Music City Rust Developers

Using Rust For Web Series 1 : Why HTMX Is Bad

2025-04-17 | Redmond, WA, US | Seattle Rust User Group

April, 2025 SRUG (Seattle Rust User Group) Meetup

2025-04-22 | Detroit, MI, US | Detroit Rust

Rust Community Meet and Conference Report - Ann Arbor

2025-04-23 | Austin, TX, US | Rust ATX

Rust Lunch - Fareground

2025-04-23 | Austin, TX, US | Rust ATX

Rust Lunch - Fareground 2025-04-23 | Spokane, WA, US | Spokane Rust

Community Show & Tell at Fuel Coworking

2025-04-24 | Atlanta, GA, US | Rust Atlanta

3rd 3RD TIME OMG YES!

2025-04-25 | Boston, MA, US | Boston Rust Meetup

Ball Square Rust Lunch, Apr 25

2025-05-01 | Saint Louis, MO, US | STL Rust

SIUE Capstone Project reflections on Rust

2025-05-03 | Boston, MA, US | Boston Rust Meetup

Boston Common Rust Lunch, May 3

2025-05-08 | México City, MX | Rust MX

Calculando con el compilador: Compiler time vs Run time

2025-05-08 | Portland, OR, US | PDXRust

Apache DataFusion: A Fast, Extensible, Modular Analytic Query Engine in Rust

2025-05-11 | Boston, MA, US | Boston Rust Meetup

Porter Square Rust Lunch, May 11

Oceania

2025-04-22 | Barton, AC, AU | Canberra Rust User Group

April Meetup

If you are running a Rust event please add it to the calendar to get it mentioned here. Please remember to add a link to the event too. Email the Rust Community Team for access.

Jobs

Please see the latest Who's Hiring thread on r/rust

Quote of the Week

IEEE 754 floating point, proudly providing counterexamples since 1985!

– Johannes Dahlström on rust-internals

Thanks to Ralf Jung for the suggestion!

Please submit quotes and vote for next week!

This Week in Rust is edited by: nellshamrell, llogiq, cdmistman, ericseppanen, extrawurst, U007D, joelmarcey, mariannegoldin, bennyvasquez, bdillo

Email list hosting is sponsored by The Rust Foundation

Discuss on r/rust

[sweetswesf]

I can’t remember when I wrote these down, but I think it was last year sometime:

Interview Prep Goals To Accomplish

Complete React tutorial

Get to a place where the AlgoExpert Hard questions are easy for me

Notice & understand common algo solving patterns

Clearly describe how the internet works

Complete Advent of Code 2022

Complete 100 Days of Code

Complete AlgoExpert from AlgoExpert

Complete FrontendExpert from AlgoExpert

Complete MLExpert from AlgoExpert

Complete SystemsExpert from AlgoExpert

Building a plan before solving problems and speaking through them as I work

Understand latency, availability, load balancer, long polling, web socket

Understand sync/async flow

Understand pytests better

Understand protobufs better

Passing practice interviews

Passing real interviews

Get multiple offers

Here’s what I’ve actually been able to accomplish:

Got pretty far in React tutorial, learned a good amount, interviewed with it, & dropped it after realizing there’s so much I need to do to get hired as a full stack and solidified my place as a Backend SWE :) for now at least. I know enough React to do projects as I need to, but not enough to pass an interview.

SOME AlgoExpert Hard questions are feasible for me, nowhere near EASY yet, and I don’t HAVE to get there…for any reason

Notice & understand common algo solving patterns

Somewhat understand and can articulate how the internet works

Completed some questions on AlgoExpert from AlgoExpert

Did some FrontendExpert from AlgoExpert & took some of their quizzes

Started SystemsExpert from AlgoExpert & took some of their quizzes

Building a plan before solving problems and speaking through them as I work

Understand latency, availability, load balancers

Understand sync/async flow somewhat

Understand pytests better

Passing practice interviews

Passing real interviews, no offers yet though

Completed 5-week interview prep course

Learned more about APIs

Understand how to implement pagination & searching

Understand Postman, SQLAlchemy, & FastAPI

Can call APIs in a coding interview environment like Coderpad

Here are some things in my life I have accomplished also:

Improved my relationship with my family.

I’m strong as heck physically and have been losing fat and gaining muscle.

I can sit and work 12 hour days. You couldn’t get me to side for more than 3 previously.

I can get through the day without a nap.

I’m more disciplined in every area of my life.

I release people who don’t want to be in my life anymore.

Got admitted to an improv theater after passing their multi-day auditions.

Made a rude guy who disrespected me apologize to my face.

All glory to God.

[hindintech]

You can learn NodeJS easily, Here's all you need:

1.Introduction to Node.js

• JavaScript Runtime for Server-Side Development

• Non-Blocking I/0

2.Setting Up Node.js

• Installing Node.js and NPM

• Package.json Configuration

• Node Version Manager (NVM)

3.Node.js Modules

• CommonJS Modules (require, module.exports)

• ES6 Modules (import, export)

• Built-in Modules (e.g., fs, http, events)

4.Core Concepts

• Event Loop

• Callbacks and Asynchronous Programming

• Streams and Buffers

5.Core Modules

• fs (File Svstem)

• http and https (HTTP Modules)

• events (Event Emitter)

• util (Utilities)

• os (Operating System)

• path (Path Module)

6.NPM (Node Package Manager)

• Installing Packages

• Creating and Managing package.json

• Semantic Versioning

• NPM Scripts

7.Asynchronous Programming in Node.js

• Callbacks

• Promises

• Async/Await

• Error-First Callbacks

8.Express.js Framework

• Routing

• Middleware

• Templating Engines (Pug, EJS)

• RESTful APIs

• Error Handling Middleware

9.Working with Databases

• Connecting to Databases (MongoDB, MySQL)

• Mongoose (for MongoDB)

• Sequelize (for MySQL)

• Database Migrations and Seeders

10.Authentication and Authorization

• JSON Web Tokens (JWT)

• Passport.js Middleware

• OAuth and OAuth2

11.Security

• Helmet.js (Security Middleware)

• Input Validation and Sanitization

• Secure Headers

• Cross-Origin Resource Sharing (CORS)

12.Testing and Debugging

• Unit Testing (Mocha, Chai)

• Debugging Tools (Node Inspector)

• Load Testing (Artillery, Apache Bench)

13.API Documentation

• Swagger

• API Blueprint

• Postman Documentation

14.Real-Time Applications

• WebSockets (Socket.io)

• Server-Sent Events (SSE)

• WebRTC for Video Calls

15.Performance Optimization

• Caching Strategies (in-memory, Redis)

• Load Balancing (Nginx, HAProxy)

• Profiling and Optimization Tools (Node Clinic, New Relic)

16.Deployment and Hosting

• Deploying Node.js Apps (PM2, Forever)

• Hosting Platforms (AWS, Heroku, DigitalOcean)

• Continuous Integration and Deployment-(Jenkins, Travis CI)

17.RESTful API Design

• Best Practices

• API Versioning

• HATEOAS (Hypermedia as the Engine-of Application State)

18.Middleware and Custom Modules

• Creating Custom Middleware

• Organizing Code into Modules

• Publish and Use Private NPM Packages

19.Logging

• Winston Logger

• Morgan Middleware

• Log Rotation Strategies

20.Streaming and Buffers

• Readable and Writable Streams

• Buffers

• Transform Streams

21.Error Handling and Monitoring

• Sentry and Error Tracking

• Health Checks and Monitoring Endpoints

22.Microservices Architecture

• Principles of Microservices

• Communication Patterns (REST, gRPC)

• Service Discovery and Load Balancing in Microservices

[hiringjournal]

AI Engineer Hiring Guide: What CTOs and Startups Must Know

Artificial intelligence is no longer limited to large corporations. AI is currently being included into products from day one by startups and growth-stage companies. AI may produce significant competitive benefits through chatbots, recommendation engines, and predictive analytics. However, it might be daunting for a founder or CTO to figure out how to recruit an AI expert. 

Which skill sets ought to be given priority? Do you require someone with experience in research or someone who is more concerned with practical application? You may need to get this right if you want your product to succeed. A summary of what to look for and how IT businesses are hiring intelligent AI today may be seen below.

Looking to Build Smarter Products? Here's What to Look for When You Hire an AI Engineer

Understand the Core Responsibilities of an AI Engineer

Make sure you know exactly what you need from an AI engineer before hiring. Is your app incorporating natural language capabilities, a vision-based model, or a recommendation system?

In addition to building models, AI engineers also clean data, train algorithms, assess outcomes, and implement models in real-world settings. To match results with corporate objectives, they collaborate closely with the technical and product teams.

The most skilled AI developers close the knowledge gap between theory and practice. They may write code that complements your product architecture, create machine learning pipelines, and refine models with real-time input.

Make sure applicants can discuss algorithm design and system integration when you are ready to hire AI engineers.

Prioritize Practical Skills Over Research Credentials

A Ph.D. in machine learning may amaze you, but research does not always result in AI that is suitable for use in the real world. The most important factor is practical experience with models in authentic settings.

Seek applicants that have worked with libraries such as PyTorch, Scikit-learn, TensorFlow, or Keras. Bonus points if they are familiar with MLOps tools such as Kubeflow, Airflow, or MLflow.

Enquire about contenders' approaches to common problems such as model drift, data imbalance, or production lag. Hiring AI experts that can create dependable, scalable systems in addition to having a solid understanding of machine learning theory is the aim.

Collaboration Is Key: AI Engineers Don’t Work Alone

The function of AI engineering is not a solitary one. These experts must collaborate closely with data engineers, product managers, and software developers. For this reason, teamwork and communication abilities are equally as crucial as technical ones.

Actually, a lot of tech organizations are currently searching for full-stack conscious AI developers. Although they should be familiar with cloud architecture, APIs, and the handoff between models and backend services, they are not required to be front-end development experts.

For seamless integration, think about matching your AI engineer with hiring backend developers if your AI use case connects to essential product functions.

Know When to Hire Remote Talent

To increase their talent pool, a lot of IT startups are opting to hire remote AI developers. With the correct resources and communication practices, remote engineers may be just as productive, if not more so.

To evaluate remote applicants, use technical screenings or trial tasks. Pay attention to your async communication patterns, documentation abilities, and problem-solving abilities.

Additionally, AI experts are frequently included in platforms that assist in hiring software developers, which facilitates the process of selecting candidates with the appropriate background and time zone.

Summing Up

It's a major move to hire your first or next AI developer. However, you can hire someone who helps automate procedures, enhance customer experience, and even save operating costs if you follow the proper hiring procedures.

Just keep in mind that problem solvers, not just data scientists, should be given priority when hiring AI engineers. This kind of thinking will lay the groundwork for tech firms and startups who want to create AI-first solutions to expand more intelligently and quickly.

[tpointtech1]

https://write.as/eliza-beth/node-js-tutorial-for-2025-async-programming-and-real-world-projects

Node.js Tutorial for 2025: Async Programming and Real-World Projects

Level up your backend game! This beginner-friendly Node.js tutorial for 2025 will help you learn async patterns and build real-world apps.

[codezup]

Exploring Async Patterns: Master Asynchronous Code in Node.js

1. Introduction In the fast-paced world of web development, efficiency is key. Node.js, with its event-driven, non-blocking I/O model, excels at handling asynchronous operations. This tutorial delves into the essential async patterns, guiding you through writing efficient and scalable code. You’ll learn about callbacks, promises, async/await, and more. What You’ll Learn: – Understanding async…

[loudpoetrydragon]

Calendar Fatigue Is Real – And AI Might Be the Cure

We’ve all felt it—that creeping burnout that comes not from doing the work, but from scheduling the work. Back-to-back meetings. Overbooked calendars. Zero time to actually think, create, or breathe. This is calendar fatigue, and yes—it's a real problem in today’s digital-first workplace.

But here’s the good news: AI might just be the cure.

At CorporateOne, we’ve started integrating AI-powered scheduling assistants and smart calendar tools that do more than just manage time—they protect it.

✨ Here’s how:

Auto-suggesting optimal meeting times based on workload and energy levels

Blocking focus time based on productivity patterns

Identifying meeting redundancies and recommending async alternatives

The result? More space to work. Less stress. Better outcomes.

Because the future of work isn’t just about doing more—it’s about doing better, with time that actually works for you.

🔗 Explore how we design smarter, people-first digital workplaces: www.corporate.one

[neiljordansimon]

How to Optimize JavaScript for Faster Page Loads

JavaScript plays a critical role in modern web applications, powering everything from UI interactions to backend communication. However, poorly optimized JavaScript can significantly affect load times, especially on mobile or slow connections. As user experience and Core Web Vitals become essential SEO factors, developers and businesses are prioritizing script performance more than ever.

In this guide, we’ll explore key techniques for optimizing JavaScript, helping you reduce load time and improve responsiveness — a standard practice followed by leading JavaScript development companies.

1. Minify and Compress JavaScript Files

Minification removes unnecessary characters (like whitespace and comments) from JavaScript files, reducing file size without affecting functionality.

Use tools like:

UglifyJS

Terser

Google Closure Compiler

For additional compression, enabling Gzip or Brotli on your server ensures your JavaScript files are delivered in a smaller, compressed format.

Many top JavaScript development companies automate this process via build tools like Webpack or Gulp to streamline deployment.

2. Eliminate Unused JavaScript

Dead code or libraries that aren't being used can unnecessarily bloat your files. Audit your codebase and remove:

Unused functions or variables

Legacy plugin scripts no longer in use

Entire libraries if only a small utility is needed

Tools like Chrome DevTools or Lighthouse can help identify unused JavaScript. Expert teams at JavaScript development companies often use tree-shaking and modular design patterns to prevent this issue altogether.

3. Defer or Async JavaScript Loading

Using the defer or async attribute when loading JavaScript files ensures that scripts don’t block HTML rendering.

async loads the script asynchronously but doesn’t guarantee execution order.

defer ensures scripts run after the HTML is parsed, in the correct order.

Example:

html

CopyEdit

<script src="main.js" defer></script>

Strategically applying this across third-party and custom scripts can dramatically reduce render-blocking behavior.

4. Bundle and Split JavaScript Code

Bundling reduces HTTP requests by combining JavaScript files, while code-splitting ensures users only load the code necessary for the current page.

Modern bundlers like Webpack, Parcel, and Vite allow smart code-splitting. This technique is widely adopted by top JavaScript development companies to deliver faster, leaner applications across multiple devices.

5. Use a CDN to Deliver JavaScript

Content Delivery Networks (CDNs) distribute JavaScript files across geographically diverse servers. This reduces latency by serving users from the nearest server, improving load speed.

Additionally, shared libraries like React or jQuery served via CDN are often already cached in users' browsers from previous visits to other sites.

6. Optimize Third-Party Scripts

Analytics, chatbots, marketing trackers — these third-party scripts often run outside your control but significantly impact performance.

To optimize:

Load them after critical content.

Use tag managers with built-in performance settings.

Monitor their impact using performance tools.

Top-performing JavaScript development companies routinely audit these integrations to strike a balance between functionality and performance.

7. Avoid Inline JavaScript and DOM Manipulation on Load

Minimize inline scripts and avoid extensive DOM manipulation during initial page load. Inline scripts block rendering and increase Time to Interactive (TTI).

Instead:

Use event listeners that trigger after page load.

Use frameworks or vanilla JavaScript for efficient DOM handling.

8. Lazy Load Non-Essential Features

Don’t load everything upfront. Features like sliders, comment sections, or offscreen widgets can be loaded when needed.

Lazy loading reduces initial bundle size and allows faster first-paint experiences — a principle JavaScript development companies implement when building modern SPAs or PWA platforms.

9. Monitor and Continuously Improve

Use performance monitoring tools like:

Google Lighthouse

WebPageTest

SpeedCurve

Chrome DevTools

Regular audits and performance reviews help maintain a fast experience. Leading JavaScript development companies often integrate these tools into their CI/CD pipelines for consistent speed checks.

Conclusion

JavaScript optimization isn’t just about performance—it’s about user experience, SEO, and long-term scalability. Whether you’re building a single-page app or a high-traffic eCommerce platform, faster scripts lead to happier users and better conversions.

By implementing these strategies, your development workflow can align with the performance standards set by the top JavaScript development companies worldwide. Investing in optimization is not only beneficial — it's essential in today’s digital environment.

[hackernewsrobot]

A Visual Journey Through Async Rust

https://github.com/alexpusch/rust-magic-patterns/blob/master/visual-journey-through-async-rust/Readme.md

[samanthablake02]

Perfect Your Craft: Learning Advanced Kotlin Programming by 2025

Late 2024 industry reports indicate that applications with robust architectures and asynchronous capabilities experienced a 30% increase in user engagement. Merely understanding Kotlin basics is no longer sufficient for excelling in modern Android and backend programming. To thrive, developers must master advanced Kotlin techniques, including Domain Specific Languages (DSLs), Coroutines, and architectural patterns, to build scalable, maintainable, and performant applications. For any android app development company, investing in these advanced skills is now essential to staying competitive and delivering top-tier solutions.

Revealing the Potential of Kotlin DSLs: Designing Beautiful APIs

Why Adopt Kotlin DSLs?

Enhanced Readability: DSLs enable code that resembles declarative statements, making it accessible to domain-specific users.

Rapid Development: DSLs abstract complex functionalities, allowing developers to focus on domain logic.

Modularity: DSLs promote separation of concerns, localizing changes within specific domains for streamlined maintenance.

Simplified Interfaces: DSLs provide intuitive syntax, hiding underlying complexity and aiding in complex rule implementations.

Key Techniques for DSL Development

Define Your Domain: Clearly identify the tasks or setups the DSL will simplify.

Create Intuitive Syntax: Use Kotlin features like lambdas with receivers, infix notation, and extension functions to design elegant DSL structures.

Iterative Growth: Start with a minimal set of features and expand incrementally, ensuring focus and usability.

Prioritize Developer Experience: Incorporate clear error messages, comprehensive documentation, and engaging examples for seamless adoption.

Common DSL Design Mistakes to Avoid

Overcomplication: Avoid overly broad or complex DSLs lacking domain focus.

Inconsistent Syntax: Ensure coherent syntax throughout to maintain usability.

Poor Documentation: A well-documented DSL is essential for developer understanding and application.

Neglecting Performance: Always consider the performance implications of using DSLs.

Kotlin Coroutines: Mastering Asynchronous Programming

The Beauty of Kotlin Coroutines

Simplified Code: Coroutines make asynchronous code appear sequential, improving readability.

Lightweight Execution: Coroutines are far lighter than threads, enabling thousands to run with minimal overhead.

Structured Concurrency: Coroutines streamline management and cancellation of asynchronous tasks.

Seamless Integration: Coroutines integrate with popular Android libraries like Retrofit and Room.

Essential Coroutine Practices for 2025

Master Suspend Functions: Understand how suspend modifies non-blocking functions.

Learn Coroutine Builders: Familiarize yourself with launch, async, and runBlocking, each serving unique purposes.

Understand Contexts and Dispatchers: Explore Dispatchers.IO, Dispatchers.Main, and Dispatchers.Default for optimized thread execution.

Utilize Kotlin Flows: Handle asynchronous data streams effectively with Kotlin Flows.

Common Coroutine Challenges

Avoid Blocking Main Threads: Steer clear of runBlocking in production environments.

Implement Lifecycle-Aware Scopes: Use viewModelScope or lifecycleScope to manage coroutine lifecycles on Android.

Handle Exceptions Gracefully: Use try-catch blocks and supervision strategies for robust error management.

"Kotlin Coroutines represent a fundamental shift in how developers approach asynchronous programming. Their elegance and power are essential tools for modern Kotlin development." — Competent Kotlin Developer, 2024

Architectural Patterns: Methodical Kotlin Applications

Kotlin Architectural Paradigms for 2025

Model-View-ViewModel (MVVM): A pillar of Android development that decouples UI from business logic for better maintainability.

Clean Architecture: Modular, framework-agnostic design promoting testability and scalability.

Model-View-Intent (MVI): A reactive paradigm leveraging immutable states and unidirectional data flow for predictable UIs.

Benefits of Modular Applications

Faster Build Times: Modular code speeds up builds significantly.

Code Reusability: Modules enhance collaboration and feature delivery.

Streamlined Gradle DSL: Kotlin’s Gradle DSL simplifies building and managing modular projects.

Important Factors Influencing Architectural Decisions

Architectural decisions are influenced by several key factors that impact the scalability, maintainability, and testability of applications:

Application Complexity: MVVM is ideal for simpler applications, while Clean Architecture or MVI suits more complex projects.

Team Size: Larger teams benefit from modular architecture as it facilitates concurrent development and reduces merge conflicts.

Testability: Patterns emphasizing decoupling and pure functions—like Clean Architecture and MVI—are particularly helpful for applications requiring extensive testing.

Scalability Needs: Applications anticipating significant growth require modularity and loose coupling to ensure robust scaling.

Avoiding Architectural Anti-Patterns

Massive Activities/Fragments: Avoid overloading Activities or Fragments with too much logic. Delegate responsibilities to ViewModels or other architectural components.

Minimize Tight Coupling: Reduce dependencies between modules and components. Use dependency inversion techniques to decouple high-level modules from low-level implementations.

Layer Ignorance: Ensure clear layers in your architecture—separation between presentation, domain, and data layers is essential for maintainability.

Common Questions

What Are the Main Advantages of Domain-Specific Languages (DSLs)? DSLs enhance domain focus, improve developer efficiency, and simplify code readability.

How Do Kotlin Coroutines Simplify Asynchronous Operations? Coroutines replace callbacks with sequential, readable synchronous-like architectures, simplifying asynchronous code.

Why Does Kotlin Project Architectural Pattern Selection Matter? As application complexity increases, architectural patterns ensure maintainability, scalability, and robustness.

Which Kotlin Features Benefit MVVM Implementation? MVVM naturally aligns with Kotlin’s data classes, coroutines, and flows, enhancing asynchronous operations and data handling.

What Mistakes Should Developers Avoid With Kotlin Coroutines? Prevent stalling main threads, avoid coroutine leaks, and implement proper exception management for stable program behavior.

Recommendations

Learning advanced Kotlin programming is vital for creating innovative, high-performance applications as we move toward 2025. By investing in knowledge of DSLs, coroutines, and strong architectures, developers can lead Kotlin development and deliver exceptional software solutions.

Action Steps:

Experiment with DSL Design: Develop domain-specific languages tailored to your project’s needs to boost clarity and efficiency.

Dive Into Coroutines and Flows: Deepen your understanding of asynchronous programming to optimize app responsiveness and scalability.

Investigate Architectural Patterns: Explore architectural frameworks suited to your application’s requirements for better scalability and testability.

Share Knowledge: Collaborate with fellow developers to learn, exchange ideas, and refine advanced Kotlin practices together.

Elevate your Kotlin proficiency today! Embrace advanced programming techniques to fully utilize Kotlin’s capabilities and stay ahead in creating outstanding applications. Let’s pave the way for innovative software solutions in 2025 and beyond.

[infernovm]

Do more with Python’s new built-in async programming library

There’s lots to do in this edition of the Python Report: Do more than one thing with Python’s async. Do the math faster in Python with NumPy. Do Python in Visual Studio Code, and do it the right way with our get-started guide. And do use Python’s new structural pattern matching feature—but learn how to use it first! Top picks for Python readers on InfoWorld Get started with async in PythonLearn…

[hiringjournal]

Interview Questions to Ask When Hiring a .NET Developer

The success of your enterprise or web apps can be significantly impacted by your choice of .NET developer. Making the correct decision during interviews is crucial because .NET is a powerful framework that is utilized in a variety of industries, including finance and e-commerce. Dot Net engineers that are not only familiar with the framework but also have the ability to precisely and clearly apply it to real-world business problems are sought after by many software businesses.

These essential questions will assist you in evaluating candidates' technical proficiency, coding style, and compatibility with your development team as you get ready to interview them for your upcoming project.

Assessing Technical Skills, Experience, and Real-World Problem Solving

What experience do you have with the .NET ecosystem?

To find out how well the candidate understands .NET Core, ASP.NET MVC, Web API, and associated tools, start with a general question. Seek answers that discuss actual projects and real-world applications rather than only theory.

Follow-up: What version of .NET are you using right now, and how do you manage updates in real-world settings?

Experience with more recent versions, such as .NET 6 or .NET 8, can result in fewer compatibility problems and improved performance when hiring Dot Net developers.

How do you manage dependency injection in .NET applications?

One essential component of the scalable .NET design is dependency injection. An excellent applicant will discuss built-in frameworks, how they register services, and how they enhance modularity and testability.

Can you explain the difference between synchronous and asynchronous programming in .NET?

Performance is enhanced by asynchronous programming, particularly in microservices and backend APIs. Seek a concise description and examples that make use of Task, ConfigureAwait, or async/await.

Advice: When hiring backend developers, candidates who are aware of async patterns are more likely to create apps that are more efficient.

What tools do you use for debugging and performance monitoring?

Skilled developers know how to optimize code in addition to writing it. Check for references to Postman, Application Insights, Visual Studio tools, or profiling tools such as dotTrace.

This demonstrates the developer's capacity to manage problems with live production and optimize performance.

How do you write unit and integration tests for your .NET applications?

Enterprise apps require testing. A trustworthy developer should be knowledgeable about test coverage, mocking frameworks, and tools like xUnit, NUnit, or MSTest.

Hiring engineers with strong testing practices helps tech organizations avoid expensive errors later on when delivering goods on short notice.

Describe a time you optimized a poorly performing .NET application.

This practical question evaluates communication and problem-solving abilities. Seek solutions that involve database query optimization, code modification, or profiling.

Are you familiar with cloud deployment for .NET apps?

Now that a lot of apps are hosted on AWS or Azure, find out how they handle cloud environments. Seek expertise in CI/CD pipelines, containers, or Azure App Services.

This is particularly crucial if you want to work with Dot Net developers to create scalable, long-term solutions.

Final Thoughts

You may learn more about a developer's thought process, problem-solving techniques, and ability to operate under pressure via a well-structured interview. These questions provide a useful method to confidently assess applicants if you intend to hire Dot Net developers for intricate or high-volume projects.

The ideal .NET hire for expanding tech organizations does more than just write code; they create the framework around which your products are built.

[atplblog]

Price: [price_with_discount] (as of [price_update_date] - Details) [ad_1] Publisher's Note: Microsoft ceased support for .NET Core 3.0 in March 2020. A new edition of this book is available that uses .NET 6 (an LTS release with support up until November 2024), C# 10, and Visual Studio 2022, as well as Visual Studio Code. Key Features: Build modern, cross-platform applications with .NET Core 3.0Get up to speed with C#, and up to date with all the latest features of C# 8.0Start creating professional web applications with ASP.NET Core 3.0Book DescriptionIn C# 8.0 and .NET Core 3.0 - Modern Cross-Platform Development, Fourth Edition, expert teacher Mark J. Price gives you everything you need to start programming C# applications.This latest edition uses the popular Visual Studio Code editor to work across all major operating systems. It is fully updated and expanded with new chapters on Content Management Systems (CMS) and machine learning with ML.NET.The book covers all the topics you need. Part 1 teaches the fundamentals of C#, including object-oriented programming, and new C# 8.0 features such as nullable reference types, simplified switch pattern matching, and default interface methods. Part 2 covers the .NET Standard APIs, such as managing and querying data, monitoring and improving performance, working with the filesystem, async streams, serialization, and encryption. Part 3 provides examples of cross-platform applications you can build and deploy, such as web apps using ASP.NET Core or mobile apps using Xamarin.Forms. The book introduces three technologies for building Windows desktop applications including Windows Forms, Windows Presentation Foundation (WPF), and Universal Windows Platform (UWP) apps, as well as web applications, web services, and mobile apps.What you will learn: Build cross-platform applications for Windows, macOS, Linux, iOS, and AndroidExplore application development with C# 8.0 and .NET Core 3.0Explore ASP.NET Core 3.0 and create professional web applicationsLearn object-oriented programming and C# multitaskingQuery and manipulate data using LINQUse Entity Framework Core and work with relational databasesDiscover Windows app development using the Universal Windows Platform and XAMLBuild mobile applications for iOS and Android using Xamarin.FormsWho this book is forReaders with some prior programming experience or with a science, technology, engineering, or mathematics (STEM) background, who want to gain a solid foundation with C# 8.0 and .NET Core 3.0. Publisher ‏ : ‎ Packt Publishing; 4th ed. edition (31 October 2019) Language ‏ : ‎ English Paperback ‏ : ‎ 818 pages ISBN-10 ‏ : ‎ 1788478126 ISBN-13 ‏ : ‎ 978-1788478120 Item Weight ‏ : ‎ 1 kg 400 g Dimensions ‏ : ‎ 23.5 x 19.05 x 4.26 cm Country of Origin ‏ : ‎ India [ad_2]