#nodejs microservices mongodb

[codeonedigest]

File Upload Download Microservice in Nodejs Javascript | API for Multipa... Full Video Link       https://youtu.be/Kyi6sYj9ImgHello friends, new #video on #nodejs #javascript #microservices for #filedownload and #fileupload #multer #multipart #formdata #multipartformdata #javascript #projeect #application #tutorial #examples is published on #codeonedigest #youtube channel.  @java #java #aws #awscloud @awscloud @AWSCloudIndia #salesforce #Cloud #CloudComputing @YouTube #youtube #azure #msazure  #codeonedigest @codeonedigest  #nodejs  #nodejs #javascript #microservices #nodejstutorial #learnnodejs #node.js #nodejsfileupload #nodejsmulter #nodejsmulterfileupload #nodejsmulterimageupload #nodejsmicroservicesfileupload #nodejsmicroservicesfiledownload #nodejsapifileupload #nodejsapifiledownload #nodejsfileuploadapi #nodejsfileuploadusingmulter #nodejsfiledownload #nodejsfiledownloadapi #nodejsdownloadfilefromserver #nodejsmultipartfileupload #multerinnodejs

[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]

Hire Node.js Developers vs Full-Stack Developers: What’s Better for You?

The success of your project depends on selecting the best developer for creating scalable and reliable web applications. Full-stack programming and Node.js have emerged as some of the most in-demand competencies for contemporary apps, particularly for tech companies trying to maintain their competitive edge. 

However, how do you choose between hiring full-stack developers and Node.js developers? The main distinctions between the two positions will be discussed in this article, along with advice on how to choose the one that best suits your needs.

Understanding the Key Differences for Your Project Needs

What Is Node.js and Why Should You Hire Node.js Developers?

A robust runtime environment based on JavaScript, Node.js is used to create server-side applications that are scalable and quick to develop. It's particularly well-liked for developing backend systems that can manage many connections at once with great throughput. Hiring Nodejs developers means bringing in professionals with an emphasis on backend development using Node.js frameworks like Express.js, Koa.js, or Hapi.js and JavaScript.

The backend of your application, server-side logic, database interfaces, and API development are usually the main focusses of Node.js engineers. They are extremely adept at making sure server-side operations function properly, which is essential for tech firms that need web apps that are quick, effective, and scalable.

It would be wise to hire Node.js engineers if your project calls for a very effective backend that can manage heavy traffic or create real-time applications. They are especially well-suited for creating scalable services, real-time applications, and microservices, and they are excellent at creating systems with high concurrency.

What Is Full-Stack Development and Why Should You Hire Full-Stack Developers?

However, full-stack developers are multifaceted experts who manage an application's back-end (server-side) and front-end (UI/UX) components. A professional who can create and manage the complete application—from the user interface to the database and server-side logic—is what you get when you engage full-stack developers.

Programming languages, frameworks, and technologies that full-stack engineers are skilled in include JavaScript (for both front-end and back-end development), HTML, CSS, and front-end development frameworks like React or Angular, as well as back-end tools like Node.js, Express, and MongoDB.

Employ full-stack engineers who can handle both the front-end and back-end for tech organizations that need a developer who can see a project through from inception to conclusion. Teams that require a highly adaptable resource who can work on various application stack components and guarantee seamless front-end and back-end system interaction will find full-stack developers ideal.

Node.js Developers vs Full-Stack Developers: Which One Is Right for Your Project?

So, is it better to recruit full-stack engineers or Node.js developers? It mostly relies on the needs of your team and the size of your project:

If you require a developer with expertise in backend programming, scalable server-side application development, and managing large amounts of data and traffic, hire Nodejs developers. Microservices and real-time applications that require performance are best suited for Node.js. 

If your project calls for a more comprehensive strategy, select full-stack engineers, who can manage both the front-end and back-end. For smaller teams or projects where you require a flexible developer who can move between the stack's layers as needed, full-stack developers are ideal.

Hiring full-stack developers to handle the front-end and integration and hiring backend developers to handle the server-side logic may be the best option. This is especially true if you are creating a complicated web application with several layers or features and you want experts for distinct project components.

Conclusion: Making the Right Choice for Your Needs

The complexity and scope of your project will determine whether you hire full-stack or Node.js developers. Hire Nodejs developers with extensive knowledge of server-side JavaScript for a highly specialized backend. Hiring full-stack engineers, on the other hand, will guarantee your application's flawless operation throughout if you demand a more comprehensive solution that incorporates both front-end and back-end capabilities.

Knowing the particular requirements of your project can help you make the best choice for tech businesses who are committed to creating scalable, reliable applications. Knowing these roles can help you make an informed choice for the future success of your application, regardless of whether you want to concentrate on backend development or require a flexible developer who can manage both ends of your project.

[brilworks]

What is Express.js? A Comprehensive Guide to Beginners

Let’s start with web development.

When we talk about web development, we are basically essentially talking about the front-end and back-end (also referred to as server-side). Express is a backend development Nodejs framework.

What is a Nodejs Framework?

This section is for those who are not familiar with frameworks. If you already know what a framework is, please feel free to skip ahead.

Writing an application from scratch is time-consuming and tedious, especially in today’s fast-paced world, and initial setup may involve a lot of boilerplate code, such as setting up ports and defining route handlers; frameworks help to save time and effort by providing a pre-built set of tools and libraries that can be used to quickly and easily create a web application. This can free up developers to focus on the things that matter most — writing logic and advanced functionalities.

What is Express js?

The image shows how a tech stack contributes to complete web development. For instance, when it comes to data storage, a Database (e.g., MongoDB) is required, and for writing the front end, various frameworks exist today, such as Angular.js.(in MEAN stack).

Similarly, you need to use a backend-specific language or framework for the backend. Some popular backend languages include Python, Java, JavaScript (Node.js), and PHP, while Django, Express.js, and Flask are some of the popular backend frameworks.

If you want to use JavaScript in the backend, you typically need to use the Node.js runtime environment. Node.js allows you to run JavaScript code outside of a web browser, which makes it possible to use JavaScript for both the front end and back end of a web application.

On top of Nodejs, several frameworks have been created, among which is Express. More precisely, it is a layer built around Node.js that significantly simplifies the process of working within the Node.js environment and reduces development complexity.

Express is an open-source web application framework for Node.js. It provides a robust set of features for building web and mobile applications, including routing, middleware, template engines, seamless database integration, and a wealth of features for developing advanced features and functions.

Note: In this article, when we refer to web applications with Express, we are explicitly referring to the development of “back-end services or APIs.”

Features of Express

1. An array of pre-built tools

The framework includes an array of tools for web applications, routing, and middleware for building and deploying large-scale, enterprise-ready applications.

2. Node package manager

It comes up with a Node package manager and a command-line interface(CLI), allowing you to create project structures, generate routes, controllers, and other components, as well as manage dependencies and configuration settings.

3. Middleware

Middleware in Express is used as snippets of code that intercept requests and responses, manage errors, and perform various other tasks, helping you to perform actions like validation, logging, and authentication in a reusable and modular way.

4. Routing

ExpressJS offers developers a straightforward routing system that simplifies the handling of HTTP requests. In addition, it allows you to define your own special paths and rules for these requests.

Applications of Expressjs

It is termed as a versatile framework that developers employ for constructing APIs, single page and real-time applications, microservices, proxy servers, CMSs, backend for mobile applications, authentication, authorization mechanisms, and many more services. Below is a list of the application you can build using Express js.

1. APIs for Single Page Application

Single-page applications (SPAs) are a popular type of web application that loads all of the content for the page in one go. This means that the user does not have to wait for the page to reload when they interact with it, which can provide a smoother and more responsive experience.

Some popular examples of SPAs include Gmail, Google Maps, and Spotify. These apps are able to provide a great user experience because they only need to load the content once, and then they can dynamically update the content based on the user’s actions. This makes for a very fluid and interactive experience. Express is used for developing back-end services, or APIs, for single-page applications to fetch data.

2. Real-time applications

Real-time applications are increasingly popular as they allow users to interact with each other in real time. Some popular examples of real-time applications include multiplayer games, chat apps, and collaboration tools. Express is used in developing real-time applications.

It helps you build the basic structure, like handling web pages and buttons, and when you want your website to instantly update without needing to refresh the page, Express.js and socket.io can work together.

Express.js can take care of the regular stuff your website needs, like showing pages and handling regular requests. While WebSockets enables real-time data exchange between the server and clients.

3. Streaming applications

Streaming applications are becoming increasingly popular as they allow users to watch movies, TV shows, and other content on demand. Some popular examples of streaming applications include Netflix, Hulu, and Disney+.

You can leverage Express in streaming applications for a variety of tasks, including handling requests, serving media files, developing authentication and authorization modules, implementing search and recommendations, and many more functionalities.

4. Fintech application

Some popular fintech applications that are built with Express.js include Robinhood, Coinbase, and PayPal. Leveraging the robust functionalities of Express.js, these applications efficiently manage intricate financial transactions.

5. APIs

APIs are software intermediaries that allow different systems to communicate with each other. They are widely utilized by different systems for integrating payment gateways, social media integrations, and e-commerce integrations. Brillworks has developed a suite of APIs and applications for the business consulting and media preservation industries, which includes critical functions such as company setup, visa services, corporate services, file management, customer portal, CMS portal, bulk upload, etc.

Read more: https://www.brilworks.com/blog/what-is-express-js-comprehensive-guide-to-beginners/

[globaljobalert-blog]

Senior Fullstack engineer - Remote, Worldwide

Company: Sourceter We are looking for a Senior Full-stack Developer for our client's core team. Our client is a SOC Platform that empowers security teams to automatically identify and respond to security incidents across their entire attack surface. Platform enables vendor-agnostic data ingestion and normalization at a predictable cost. Our built-in detection engineering, data correlation, and automatic investigation helps teams overcome volume, complexity, and false positives. Product mitigates real threats faster and more reliably than SIEMs, ultimately reducing customers' overall security risk. Enterprises like Booking.com, Snowflake, Mars and Cimpress leverage the client's SOC Platform to empower their security teams. Company is backed by leading VCs and strategic investors including Stripes, YL Ventures, DTCP, Cisco Investments, etc. Responsibilities: - Develop a complex expert system for managing, analyzing, and investigating security alerts using React & NodeJS. - Build advanced, unique user flows and UI components that can handle all possible types of Cyber security scenarios and attack stories. - Work with large scale, big data cloud warehouses and databases (such as Snowflake, Postgres, MongoDB and more) for optimized time sensitive queries. - Design and implement new E2E pipelines and components in a microservices environment. - Come up with beautiful and creative ways to visualize cybersecurity data Requirements: - Minimum 5 years of experience developing real-life large front-end systems - Proven experience with React - minimum 3 years - 5 years of experience in Node.js development - Backend experience using a modern server-side framework (Express, Django, Flask, etc.) - Experience and solid understanding of production environments in AWS, K8s - Experience with database architecture, designing and efficiently querying SQL & NoSQL databases Nice to have skills: - Experience with Angular, Vue.js - Experience with Kafka or a pipeline pub-sub architecture - Experience with Python We Offer: - Competitive market salary - Flexible working hours - Paid vacations - Being a part of team of professionals who knows how to build world-class products - Wide range of excellent opportunities for professional and personal growth. APPLY ON THE COMPANY WEBSITE To get free remote job alerts, please join our telegram channel “Global Job Alerts” or follow us on Twitter for latest job updates. Disclaimer:  - This job opening is available on the respective company website as of 8thJuly 2023. The job openings may get expired by the time you check the post. - Candidates are requested to study and verify all the job details before applying and contact the respective company representative in case they have any queries. - The owner of this site has provided all the available information regarding the location of the job i.e. work from anywhere, work from home, fully remote, remote, etc. However, if you would like to have any clarification regarding the location of the job or have any further queries or doubts; please contact the respective company representative. Viewers are advised to do full requisite enquiries regarding job location before applying for each job.   - Authentic companies never ask for payments for any job-related processes. Please carry out financial transactions (if any) at your own risk. - All the information and logos are taken from the respective company website. Read the full article

[jaiinfoway]

Visit #jaiinfoway www.jaiinfoway.com for Looking for a reliable and efficient MERN stack development partner? Look no further than JaiInfoway!

#cloudserviceprovider

#startupsuccess

#entrepreneurmindset

#MERNstack

#webdevelopment

#codinglife

#JavaScript

#ReactJS

#NodeJS

#ExpressJS

#MongoDB

#webapp 1

[johnjardincodes]

View this post on Instagram

A post shared by JOHN JARDIN, Bleeding Code (@johnjardincodes)

Working hard on an Intro to my YouTube video content. I think I'm ready to release a final version. Let me know what you think? Just for some context, Agilit-e (pronounced agility), is my YouTube channel where I provide tutorials, insight and life lessons on all things related to software development, project management, integration, AI, Bots, cognitive computing, etc. If you're curious and want to know more, the link to my YouTube channel is in my Instagram profile. While you're there, feel free hit me a follow 🙂🙏. Till next time…Code with Passion, Innovate, and Have Fun 😎 . . . . . #softwarefollower #softwarefollowers #coderslife #codeismylife #codemasters #codelife #programminglife #softwareengineering #softwaredeveloper #softwareengineer #softwaredevelopment #software #coding #code #vscode #javascriptdeveloper #javascripts #javascript #nodejs #react #reactjs #mongodb #expressjs #microservices #nodered #apis #webservices #agilite (at Nelson Mandela Bay) https://www.instagram.com/p/BtwMii4gac-/?utm_source=ig_tumblr_share&igshid=rorgwksbtb37

[ineeddev]

We are hiring .FullStack NodeJs - Angular, ( Remotely ) Experience : 0-1 Years - ITI Grad are welcome . Attractive salaries paid in USD . Main requirements : #serverless #microservices #restfulapi using #nodejs and #mongodb #angular , #html , CSS, and #Bootstrap. Please apply with your CV.

[amandaallen]

Why should You Consider Using Node.js Development? A Definitive Guide

For what reason would it be a good idea for you to think about Using Node.js Development? A Definitive Guide  

Since its origin in 2009, NodeJS has acquired an undeniably more grounded balance in the worldwide designer local area. I end up being the sort of JavaScript engineer who is consistently watching out for further developed methods of conveying viable answers for my customers, and NodeJS is the encapsulation of productivity. That is most likely the motivation behind why more than 28,000 sites in the US alone use it.  

NodeJS remains in a class separated with regards to ongoing web applications that utilize push innovation over WebSockets. For more than 20 years, advancement endeavors remained alive on the stateless web base on the stateless solicitation reaction worldview. With NodeJS, both the customer and the worker would now be able to start correspondence, taking a free trade of information into account. This is totally different from the average web reaction worldview in which it is the customer who needs to start correspondence.  

With these benefits, Node.JS presently assumes an inexorably huge part in the tech stack of a large number of the world's business goliaths.  

The advantages of NodeJS  

• Serverless and equipment free  

Quite possibly, the most obvious advantage of NodeJS is that it wipes out the components of worker support and equipment from execution appraisals. NodeJS saves money on costs. It is additionally substantially less time-escalated, hence accelerating advancement and intensifying designer effectiveness and efficiency.  

• Scalability  

With regards to scaling, a critical benefit that NodeJS presents is that lone influenced code requires changes as opposed to changing the whole code design of the application. NodeJS centers around execution and hence insignificant coding emphatically impacts execution speed just as adaptability.  

• Real-time applications  

Constant applications like food conveyance applications or community instruments like Google Docs request vigorous backends since high handling abilities are required. NodeJS stands apart as an incredible arrangement in such circumstances as it can satisfy the requirements referenced above for WebSockets conventions.  

Upcoming NodeJS trends to watch for

• MEAN and MERN Stack  

MEAN, which comprises - MongoDB, Express, Angular, Node.JS, and MERN, which comprises - MongoDB, Express, React, Node.JS are the two quickest developing open-source development stacks.  

• GraphQL  

GraphQL is an arising pattern that has developed with amazing velocity. It smoothes out work processes and can be coordinated with React.  

• Microservices  

Microservices is a developing pattern. It is an engineering approach dependent on building an application as an assortment of little administrations permitting simple code support.  

• Cloud-Native applications  

Node.JS is an incredible fit for cloud applications, considering that it offers diminished equipment reliance. It helps assemble cloud-local applications without any preparation and can likewise be conveyed in scaling existing cloud applications.  

In summation  

Since we have investigated the contributions, perfect balances, and traps of NodeJS, obviously, the framework is a really serious deal. It has magnificent local area support and is an uncommon tech resource by its own doing.  

From insights to utilize cases, all markers highlight the way that the two engineers and ventures like the capacities of NodeJS, many announcing it a definite shot formula for progress.  

In the event that you have chosen in the NodeJS framework and are currently searching for a NodeJS development organization for your online endeavors, let me guarantee you that you have picked shrewdly and are destined for success.

Know more about why should you consider Using Node.js Development?  

[globaljobalert-blog]

Senior Fullstack engineer - Remote

Company: Sourceter We are looking for a Senior Full-stack Developer for our client's core team. Our client is a SOC Platform that empowers security teams to automatically identify and respond to security incidents across their entire attack surface. Platform enables vendor-agnostic data ingestion and normalization at a predictable cost. Our built-in detection engineering, data correlation, and automatic investigation helps teams overcome volume, complexity, and false positives. Product mitigates real threats faster and more reliably than SIEMs, ultimately reducing customers' overall security risk. Enterprises like Booking.com, Snowflake, Mars and Cimpress leverage the client's SOC Platform to empower their security teams. Company is backed by leading VCs and strategic investors including Stripes, YL Ventures, DTCP, Cisco Investments, etc. Responsibilities: - Develop a complex expert system for managing, analyzing, and investigating security alerts using React & NodeJS. - Build advanced, unique user flows and UI components that can handle all possible types of Cyber security scenarios and attack stories. - Work with large scale, big data cloud warehouses and databases (such as Snowflake, Postgres, MongoDB and more) for optimized time sensitive queries. - Design and implement new E2E pipelines and components in a microservices environment. - Come up with beautiful and creative ways to visualize cybersecurity data Requirements: - Minimum 6 years of experience developing real-life large front-end systems - Proven experience with React - minimum 3 years - 5+ years of experience in Node.js development - Backend experience using a modern server-side framework (Express, Django, Flask, etc.) - Experience and solid understanding of production environments in AWS, K8s - Experience with database architecture, designing and efficiently querying SQL & NoSQL databases Nice to have skills: - Experience with Angular, Vue.js - Experience with Kafka or a pipeline pub-sub architecture - Experience with Python We Offer: - Competitive market salary - Flexible working hours - Paid vacations - Being a part of team of professionals who knows how to build world-class products - Wide range of excellent opportunities for professional and personal growth. APPLY ON THE COMPANY WEBSITE To get free remote job alerts, please join our telegram channel “Global Job Alerts” or follow us on Twitter for latest job updates. Disclaimer:  - This job opening is available on the respective company website as of 3rdJuly 2023. The job openings may get expired by the time you check the post. - Candidates are requested to study and verify all the job details before applying and contact the respective company representative in case they have any queries. - The owner of this site has provided all the available information regarding the location of the job i.e. work from anywhere, work from home, fully remote, remote, etc. However, if you would like to have any clarification regarding the location of the job or have any further queries or doubts; please contact the respective company representative. Viewers are advised to do full requisite enquiries regarding job location before applying for each job.   - Authentic companies never ask for payments for any job-related processes. Please carry out financial transactions (if any) at your own risk. - All the information and logos are taken from the respective company website. Read the full article

[bestscourses]

Top 10+ NodeJS online courses, programs from top educational online platforms such as udemy, Coursera, edx, Linkedin learning & Alison -for learning NodeJS online.

https://www.bestscourses.com/Programming/best-node-js-certification-courses-online/

1. Advance your Node.js Skills (Linked learning) 2. The Complete Node.js Developer Course (3rd Edition) (Udemy) 3. Building Modern Nodejs Applications on AWS (edx) 4. JavaScript, jQuery, and JSON (Coursera) 5. Microservices with Node JS and React (Udemy) 6. Developing Cloud Apps with Node js and React (Coursera) 7. Become a Node.js Developer (Linkedin learning) 8. Secure MEAN Stack Developer (Alison) 9. Node.js API Masterclass With Express & MongoDB (Udemy) 10. Web Scraping in Nodejs & JavaScript (Udemy) 11. Web App Development with the Power of Node.js (edx)

[globalmediacampaign]

Capture changes from Amazon DocumentDB via AWS Lambda and publish them to Amazon MSK

When using a document data store as your service’s source of truth, you may need to share the changes of this source with other downstream systems. The data events that are happening within this data store can be converted to business events, which can then be sourced into multiple microservices that implement different business functionalities. Capturing the changes from data sources is called change data capture (CDC); you can implement it in different ways by different data technologies. In the case of Amazon DocumentDB (with MongoDB compatibility), you can implement CDC via change streams functionality. This feature simplifies the process to listen to committed changes to documents in a set of collections in real time. The events are also time-ordered within a stream, which makes the stream a reliable mechanism for state replication scenarios. In this post, I show how you can capture changes from Amazon DocumentDB by using AWS Lambda implemented in NodeJS. After the Lambda function captures the change events, it publishes them to Amazon Managed Streaming for Apache Kafka (Amazon MSK). Architecture By completing the steps in this post, you can create a system that uses the architecture illustrated in the following image. The flow of events starts when we make changes within a collection residing in the Amazon DocumentDB database. As the changes arrive, Amazon DocumentDB copies them into a change stream dedicated to that collection. A Lambda function connects to this change stream and polls these events. After the function filters out events other than insert, update, and delete, it publishes them to a Kafka topic in an MSK cluster. A Lambda function is a stateless component, and it has a limited lifespan. Because the polling activity should be continuous, we need to run the Lambda function on a schedule. This architecture uses Amazon EventBridge to schedule the function to run every minute. In this sample architecture, each Lambda function triggered by the EventBridge engine connects to Amazon DocumentDB and watches for changes for a predefined time period (15 seconds in this case). At the end of each poll cycle, the function writes the last polled resume token to another collection in the same Amazon DocumentDB database. This checkpoint mechanism allows Lambda functions to resume the polling activity without needing to replay all the events from the beginning of the stream. This checkpointing mechanism should be in place even if we choose to use a long-running application using a virtual machine or container-based compute infrastructure. This is because if the underlying compute instance is restarted or scaled out, the new instance needs to have a starting point rather than process the whole history. A change stream can hold up to 7 days of information (determined by the change_stream_log_retention_duration parameter), which can translate to a significant number of change events for active applications. For this post, we use Amazon DocumentDB version 4.0. Deploy the stack To deploy the sample architecture into your AWS environment, we use an AWS Serverless Application Model (AWS SAM) template. The template creates the following resources in your account: An Amazon DocumentDB cluster (version 4.0) An MSK cluster A Lambda function (function-documentdb-stream-processor) that polls the change streams event from the Amazon DocumentDB cluster and publishes them to the MSK cluster An AWS Cloud9 environment, which allows you to configure source and destination systems and run your tests A VPC and subnets A NAT gateway and internet gateway Other supporting resources such as security groups and AWS Identity and Access Management (IAM) roles You will incur some costs after creating this environment. To start your deployment, clone the GitHub repository to your local machine and install and configure AWS SAM with a test IAM user. AWS SAM requires you to specify an Amazon Simple Storage Service (Amazon S3) bucket to hold the deployment artifacts. If you haven’t already created a bucket for this purpose, create one now. The bucket should be reachable by the IAM user you use for deploying AWS SAM packages. At the command line, navigate to the cloned GitHub repository’s folder and enter the following command to package the application: sam package --template template.yaml --output-template-file output_template.yaml --s3-bucket BUCKET_NAME_HERE Replace BUCKET_NAME_HERE with the name of the S3 bucket that holds the deployment artifacts. AWS SAM packages the application and copies it into the S3 bucket. When the AWS SAM package command finishes running, enter the following command to deploy the package: sam deploy --template-file output_template.yaml --stack-name Blogstack --capabilities CAPABILITY_IAM --parameter-overrides docDBUser=masterUsername docDBPass=masterPass docDBClusterName=docDBCluster mskClusterName=blog-msk-clstr In the preceding command, you can supply your own stack name by changing the stack-name parameter’s value. This template also allows you to provide the following input parameters and override their default values: docDBUser docDBPass docDBClusterName mskClusterName When you run this command, AWS SAM shows the progress of the deployment. The deployment takes around 15 minutes and creates a main stack and a dependent stack for the AWS Cloud9 environment in AWS CloudFormation. You can also track the overall deployment status on the AWS CloudFormation console. When the deployment is complete, AWS SAM outputs the following parameters, which you need while doing additional system configurations. These parameters are also available on the AWS CloudFormation console, on the Outputs tab of the deployed stack named Blogstack. Connecting to your AWS Cloud9 environment An AWS Cloud9 environment is created for you automatically when you deploy the AWS SAM package. You need to further provision this environment with MongoDB and Kafka command line tools. To start provisioning your AWS Cloud9 environment, follow the URL that was provided by the Cloud9URL output parameter of the deployed CloudFormation stack. When the environment starts, go to the terminal section. Configure Amazon DocumentDB You can now install mongo shell onto your AWS Cloud9 environment. Use the following commands in the terminal: echo -e "[mongodb-org-4.0] nname=MongoDB Repositorynbaseurl= https://repo.mongodb.org/yum/amazon/2013.03/mongodb-org/4.0/x86_64/ ngpgcheck=1 nenabled=1 ngpgkey= https://www.mongodb.org/static/pgp/server-4.0.asc" | sudo tee /etc/yum.repos.d/mongodb-org-4.0.repo sudo yum install -y mongodb-org-shell You also need Amazon DocumentDB CA certificates to connect to your cluster. Use the following command to download the certificate to the current folder (~/environment): wget https://s3.amazonaws.com/rds-downloads/rds-combined-ca-bundle.pem Enter the following command connect to your cluster: mongo --ssl --host DOCUMENTDB_CLUSTER_ENDPOINT_HERE:27017 --sslCAFile rds-combined-ca-bundle.pem --username DOCUMENTDB_USERNAME_HERE --password DOCUMENTDB_PASSWORD_HERE In the preceding command, provide the cluster endpoint of the Amazon DocumentDB cluster that was output from the AWS SAM installation. Also provide your username and password that you used during the sam deploy command. Create a database (blogdb): We create two collections in the database. The first collection is named blogcollection; we use it as the data source for the change stream integration. Use the following command to create the empty blogcollection: db.createCollection("blogcollection") Enable change stream on this collection by running the following adminCommand command: db.adminCommand({modifyChangeStreams: 1, database: "blogdb", collection: "blogcollection", enable: true}); You need to also enable change streams in the cluster’s parameter group before it can be used. You can enable Amazon DocumentDB change streams for all collections within a given database, or only for selected collections. We use the second collection, checkpoints, to store the checkpoint document that holds the last processed resume token: db.checkpoints.insert({_id: 1, checkpoint: 0}) You can now issue the exit command to exit the mongo shell and continue with the next step: exit Configure the MSK cluster To configure the MSK cluster, you need to install Kafka into your AWS Cloud9 environment. Use the following commands in your AWS Cloud9 terminal to download Kafka from the source, extract it, and navigate to the bin folder: wget https://apache.mirror.colo-serv.net/kafka/2.7.0/kafka_2.13-2.7.0.tgz tar -xzf kafka_2.13-2.7.0.tgz cd kafka_2.13-2.7.0/bin Kafka binaries we use in this post require Java 8 or later versions. Check your environment’s Java version with the following command: java -version If you see a version below 1.8, issue the below commands to upgrade it to Java 8. sudo yum -y install java-1.8.0-openjdk-devel sudo alternatives --config java Select the 1.8 versions from the list. Find the bootstrap servers of your MSK cluster: To find the bootstrap server hostnames for your MSK cluster, navigate to the Amazon MSK console and choose your cluster. In the Cluster summary pane on the Details tab, choose View client information and copy the bootstrap servers host/port pairs. Within Kafka installation’s bin directory, issue the following command to create a topic to hold the events published by function-documentdb-stream-processor: sudo ./kafka-topics.sh --create --topic blog-events --replication-factor 1 --partitions 1 --bootstrap-server MSK_BOOTSTRAP_SERVERS_HERE Replace MSK_BOOTSTRAP_SERVERS_HERE with the value of the host/port pairs from the previous step. Test the solution To test the setup from end to end, you need to open a second terminal in your AWS Cloud9 environment. On the Window menu, choose New Terminal. In the first terminal, make sure you’re in the bin folder of the Kafka installation and issue the following command to start listening to the records in the Kafka topic: sudo ./kafka-console-consumer.sh --topic blog-events --from-beginning --bootstrap-server MSK_BOOTSTRAP_SERVERS_HERE As before, provide the value of the bootstrap server host/port pairs. In the second terminal, use mongo shell to connect to the Amazon DocumentDB cluster the same way you did earlier. Issue the following command to insert a document into blogdb.blogcollection: use blogdb; db.blogcollection.insert({"title" : "Blog Title 1"}) Add another document with the following command: db.blogcollection.insert({"title" : "Blog Title 2"}) In the first terminal, observe the changes on the Kafka topic as you add different documents to the collection. Cleanup To clean up the resources you used in your account, delete the stack from the AWS CloudFormation console. You can also delete the bucket you used for packaging and deploying the AWS SAM application. Conclusion This architecture shows how to capture state changes from Amazon DocumentDB via its change streams functionality and send them to Amazon MSK. You can adapt similar architectures to apply to other use cases, such as query segregation, event sourcing, data duplication, and more. For more information about the stream’s functionality and other integrations, see Run full text search queries on Amazon DocumentDB (with MongoDB compatibility) data with Amazon Elasticsearch Service and Using Change Streams with Amazon DocumentDB. If you have any questions or comments about this post, please share them in the comments. If you have any feature requests for Amazon DocumentDB, email us at documentdb-feature-request@amazon.com About the author Murat Balkan is an AWS Solutions Architect based in Toronto. He helps customers across Canada to transform their businesses and build industry leading solutions on AWS. https://aws.amazon.com/blogs/database/capture-changes-from-amazon-documentdb-via-aws-lambda-and-publish-them-to-amazon-msk/

[sahuanjana795]

Essential Tips to Become a Full Stack Java Developer

In the present  time to become a Full Stack Java developer, a programmer has to know about the front-end development as well as the backend development in a complete manner. It means a full stack developer has to know the complete idea about how to handle all the work of databases, servers, systems engineering, and clients in complete manner. In the present scenario, it seems that the “Full Stack Development” topic has already become a new job trend. A full stack designer getting both praise and blame depending on the present facts about the application. . Some people think that the full stack is just a title, what he/she should focus on is the real personal ability and technology. At NEAR LEARN you will get a good Experienced faculty who will guide you, mentor you, and nurture you to achieve your dream goal. Learn Best Full Stack Java Training Institute at NEARLEARN . What is a full stack Java developer? Now a day we are most often come across to hear the term “Full stack developer”. A full stack developer is one who have a complete idea towards the development of the application where all the layers such as Data source layer, Application layer and Presentation layer are going to be get designed. It is the end-to-end product development strategy. The full stack developer is a kind of people who master a variety of skills and use these skills to complete a product independently. Here In full stack development you could be able to get the essence of front-end, middleware and backend complete programming idea in Java.           The “full stack” refers to the collection of a series of technologies needed to complete a project. “Stack” refers to a collection of sub-modules.These software sub-modules or components are get combined to achieve the established function while without the need for other modules. Why has the full stack developer been controversially discussed? As the full stack development is a process where the application development is going to be get analysed on the basis of their mode of implementation. During the use of Full stack application, most of the reputed companies are used to refer as it is the medium based on which most of the application scenario are get defined. So, the Full stack Development must have some advantage and disadvantage too. 

Here I am going to discuss the important advantage and disadvantage in details. Advantages: 1. The full stack developers involved in a horizontal technical requirement, so that he/she can make a prototype design for a product very rapidly with his wide range of techniques. 2. With the full stack ability, they have a broader angle of views and a more active mindset. 3. Moreover, they will be more sensitive to techniques and products. 4. So, this kind of people can always have his/her opinions towards the product or design. 5. Here he/she can provide help to everyone in the team and greatly reduce the time and technical costs of team communication, technology docking.

Disadvantages: 1. It is precisely because of the horizontal technology development; some the full stack developers cannot be expert in one skill. 2. Most of them who claim to be “full stacks developer” are only know a little about the multiple skills. 3. As for how to make the architecture more suitable for the modular development, that’s a question. Even so, there are still people asking, how to become a full stack developer? As I have already discussed that, to become a full stack developer, we need to have the complete idea about the front-end and the backend development strategy. Most of us are always face a question that Should I Become a Full Stack Developer? If yes then, what sort of skill do I need to become a Full stack Java Developer.

Here  are   some of the points. 1. They should know the complete idea about the technology related to development of application and how to deploy the application to get run. 2. They should have the complete idea about the data base connectivity and their related operation in efficient manner. 3. They should know how smoothly they can be able to represent and approach the facts to the end customer. 4. Being the developer, they should be comfortable to work with all platform like Unix, Windows, Mac etc. 5. They should have the complete knowledge of various framework which are more widely used for making the application like Hibernate, Spring MVC, Struts etc. They should have a clear idea about the server-side programming languages like Servlet, JSP, JSF, Beans, Web-logics etc. Here you will get a good hand on practice in terms of a practical industry-oriented environment which will definitely help you a lot to shape your future. Learn Full Stack Java Online Training at Near learn.

Programming languages 1. To be a good and Proficient developer, you need to be good in coding. 2. The Coding is an art which is going to be get implemented on the basis of some programming language. 3. In multiple programming languages, such as JAVA, PHP, C #, Python, Ruby, Perl, etc. the developers are having the great career. 4. As most of your core business processes need to be written in these languages. Maybe not all need. But you also have to master the language grammar. 5. You need to be very familiar with how to structure, design, implementation, and testing of the project based in one language or more languages. 6. If you choose JAVA as your preferred language, then you need to master the object-oriented design and development, design patterns, J2EE-based components of the development and so on. 7. Similarly, other languages are also present which are used to have their own importance and utility. 8. So, the selection of programming language is a bit difficult task but if you need to pursue under the guidance of some good expert then definitely it will be good one.

Use development frameworks and third-party libraries 1. In most of the cases when we are going to develop an applications then we are looking for good framework. 2. The more popular development languages are generally accompanied by a good development framework. 3. In most of the cases we are used to go for the Framework such as JAVA Spring, MyBatis, Hibernate, Python Django, PHP thinkphp, yin, NodeJS express and so on.

Front-end technology 1. Front-end technologies are becoming more and more important in today’s project and product development. 2. Being developer, they must have a complete design idea and deployment strategy about the front-end application. 3. They should be comfortable with the tools like HTML, CSS, Java Script technology. 4. In the present scenario some of the web pages are also designed in bootstrap technology, so if they are having the idea in Angular and Boot strap then it will add a advantage for them. 5. They must Ensuring the responsiveness of applications. 6. In addition to product features, the user experience is also one of the criteria to test the success of a product. 7. Further study the front-end frameworks or third-party libraries such as JQuery, LESS, SASS, AngularJS, or REACT.

Database and cache 1. Any product or project needs a database to store data. 2. As a full stack developer, you also need to have at least one or two databases and know how to interact with the database. 3. Currently, the popular database is MySQL, MongoDB, Redis, Oracle, SQLServer and so on. 4. As a document-type database, MongoDB, is being used more widely in Internet products. As for larger projects, I also recommend using MySQL or commercial Oracle as the back-end database. 5. While memory databases, such as Redis, can be used for caching to improve system performance.

Basic design ability 1. Most of the articles or discussions about the full stack developer are rarely related to the design requirements. 2. But I think the design skill is very important, the principle and skill of basic prototype design, UI design, UX design are also needed to understand. 3. It is the major constraints which is used to define the ability for a developer to develop the application. 4. The Design ability also helps a developer to explore the various constraints and feature of the product which is more widely applied in most of the application.

10 skills: This article is mainly used to put the focus on Java full stack development perspective and here I assume that you are already having the essential stuff which is also considered as a foundation for codings like Data Structures and Algorithms, and Networking, Protocols, Object-oriented programming, etc. Here I am going to provide the tips which are useful for both Core Java developer for developing the front-end and Back-end development like server-side applications. The front-end and Back-end development in Java involves logics such as JSP, Servlet, and JEE. Here I am going to discuss a few tips which are sure makes you prepare yourself as a Java Web developer whose primary job is to write web applications using Java technology. It shall also help you to become a full-stack Java developer in near future. 1. Software Design and Architecture: 2. Microservices 3. DevOps Tools (Jenkins, Docker, and Kubernetes) 4. Spring Framework (Spring Boot) 5. JUnit and Mockito 6. Learn APIs and Libraries 7. JVM Internals 8. Design Patterns 9. Kotlin 10. IDE (Eclipse or IntelliJIDEA)

Scope and Facility @ Nearlearn: 1. At Nearlearn you will get a good Experienced faculty who will guide you, mentor you, and nurture you to achieve your dream goal. 2. Here you will get a good hand on practice in terms of a practical industry-oriented environment which will definitely help you a lot to shape your future. 3. During the designing process of the application, we will let you know about the other aspect of the application too. 4. Our Expert trainer will let you know about every in’s and out’s about the problem scenario. Achieving your dream goal is our motto. Our excellent team is working restlessly for our students to click their target. So, believe in us and our advice, and we assured you about your sure success.

[codeonedigest]

(via Nodejs Microservice & MongoDB in Docker Container | Learn Express Mongoose Nodejs Microservices in Docker) Full Video Link      https://youtu.be/ltNr8Meob4g         Hello friends, new #video on #nodejs #microservices in #docker #container with #mongodb in #docker #container #tutorial for #api #developer #programmers with #examples is published on #codeonedigest #youtube channel.  @java #java #aws #awscloud @awscloud @AWSCloudIndia #salesforce #Cloud #CloudComputing @YouTube #youtube #azure #msazure  #codeonedigest @codeonedigest #docker #dockertutorial #whatisdocker #learndocker #dockercontainer #nodejsmicroservice #nodejsmicroservicestutorial #nodejsmicroserviceexample #nodejsmicroserviceproject #nodejsmicroservicearchitecture #microservicemongo #nodejsmicroservicemongodb #nodejsmicroservicedocker #mongodbdocker #dockermongodb #nodejsmongoose #nodejsexpress #dockermicroservices #dockermicroservicesnodejs #dockermicroservicestutorial #dockermicroserviceexample #mongodb

[w3villatechnologies]

Why Node.JS — A Simple Outlook To Its Frameworks & Benefits

Brands are investing in web technologies to boost their online infrastructure. Node.Js is one such technology that has become popular so much as Nodejs development services have been demanded by major brands like eBay, Yahoo, PayPal, and Netflix, and so on. NodeJs comes with its own various frameworks and benefits that make it an asset to any web application development company.

NodeJS frameworks you should know about:

AdonisJS: Apps perform faster across different platforms and operating systems. AdonisJS helps in building efficient SQL queries and provides a stable ecosystem to developers. They can choose packages that are business-friendly.

Express.js: Manage servers and routes easily and build lightweight applications. Expressjs is a bridge between frontend and database to send and receive requests to configure routes.

Meteor.js: Add real-time updates to your web or mobile applications. MeteorJS is a full-stack JavaScript platform and simplifies the process of writing codes as everything can be achieved with a single JS language.

Nest.js: This framework ensures server-side apps to be more scalable, fast, and efficient. It brings together FP, FRP, OOP to provide the best architecture.

Sails.js: It provides a data-driven API for service-oriented architecture. SailsJS is compatible with all the databases and supports many adapters like MongoDB, MYSQL, PostgreSQL, etc.

Koa.js: Next-gen framework uses ECMAScript (ES6) methodologies. It is easy to find errors quickly and resolve them efficiently.

LoopBack.js: This framework uses CLI & API explorer to build dynamic apps. It can be used with REST and databases like Oracle, MongoDB, MYSQL, PostgreSQL, etc. A favorable framework for any web application development company as it can run both on-premises and cloud servers.

Hapi.js: Bridges the gap between server-side and client-side for server data to be implemented. Hapi can manage requests and has rich functionalities to build web servers.

Derby.js: Add customized codes through DerbyJS, it uses DOM methodologies to render templates on the server.

Total.js: Develop custom web applications, IoT apps, REST applications, and e-commerce apps.

Socket.io: This framework allows bidirectional, real-time, and event-based communication and can run across major platforms like Mac, iOS, and Windows devices and browsers.

Reasons why NodeJS is highly recommended:

NodeJS increases productivity and efficiency

Implement data streaming

Compatible with microservices

NodeJS provides great speed

It provides a proxy server

It needs a single codebase

A good option for IoT

NodeJS has grown to be a marvelous technology and its framework can help build dynamic solutions in no-time. If you are looking for Nodejs development services to build your next project, then we can help you. We are W3villa Technologies, a Web Application Development Company delivering our services to global clients in the US, UK, Singapore, and Australia.