Setting Up a Job Queue in Node.js with BullMQ and Redis

 https://docs.bullmq.io/

https://medium.com/@mjdrehman/setting-up-a-job-queue-in-node-js-with-bullmq-and-redis-in-5-minutes-0f170928c0b5

Node.js Design patterns

 https://medium.com/@debiprasaddash_35810/node-js-design-patterns-8969d9184e37

Nodejs API Gateway

https://medium.com/@techsuneel99/mastering-the-api-gateway-a-node-js-microservices-architecture-approach-b37de52c4650

Nodejs Developer Roadmap

 https://github.com/aliyr/Nodejs-Developer-Roadmap

Whatsapp Cloud API: How to Send & Receive WhatsApp messages

https://medium.com/@rishicentury/how-to-use-whatsapp-cloud-api-6c4b4a22fc34

JavaScript from ES6 to ES12 in 2022

 https://medium.com/@bluetch/javascript-es6-es7-es8-es9-es10-es11-and-es12-519d8be7d48c

10 Powerful React Tools That You Should Know in 2022

Strorybook is something to try out. 

https://storybook.js.org/
https://javascript.plainenglish.io/10-powerful-react-tools-that-you-should-know-in-2022-76efa7fa711d

useMemo and useCallback in React

 https://medium.com/@jakobclausen/usememo-and-usecallback-in-react-913d307eb69

PM2 run different node version

To run several versions at the same time. In pm2, you can use the --interpreter options and specify the path to the node version you want.

You may install different node versions using nvm. 
Install NodeJS using Version Manager

Running direct script using PM2 process file:

module.exports = {
    apps : [{
      name   : "app1",
      cwd    : "/home/user/app1", // folder store the application
      script : "./app.js", // starting js file
      interpreter : 'node@6.9.1'    // Node version
    },
   {
      name   : "app2",
      cwd    : "/home/user/app2",
      script : "./app.js",
      interpreter : 'node@12.9.1'
   }]
}

Running using npm script using PM2 process file:

module.exports = {
    apps : [{
      name   : "app1",
      cwd    : "/home/user/app1", // folder store the application
      script : "/home/user/.nvm/versions/node/v6.9.1/bin/npm", // Folder where the npm stored
      args       : ["run", "start"],  // Argument pass to npm
      interpreter : 'node@6.9.1'    // Node version
    },
    {
       name   : "app2",
       cwd    : "/home/user/app2",
       script : "/home/user/.nvm/versions/node/v12.9.1/bin/npm",
       args       : ["run", "start"],
       interpreter : 'node@12.9.1'
    }]
}

How to Upload Files in Node.js using Multer

 https://javascript.plainenglish.io/uploading-files-in-node-js-using-multer-754526aa6817

How to secure a Node.js app?

 https://kumar-salokya007.medium.com/how-to-secure-a-node-js-app-d2581a53dddc

Using Nginx as Load Balancer with Node.js (Express)

 https://philosophyotaku.medium.com/using-nginx-as-load-balancer-with-node-js-express-63b39948f737

10 Quick TypeScript One-Liners

https://blog.bitsrc.io/10-quick-typescript-one-liners-128a2721345

https://javascript.plainenglish.io/18-javascript-one-liners-thatll-make-you-look-like-a-pro-678da78ccdb0

Public APIs

 https://github.com/public-apis/public-apis

How to Export Webpage to PDF with JavaScript

 https://blog.bitsrc.io/how-to-export-webpage-to-pdf-using-javascript-html2pdf-and-jspdf-6cdd549618c

Git: Working two features in parallels and resolve using merge and rebase

https://backlog.com/git-tutorial/branching/work-in-parallel/

https://backlog.com/git-tutorial/branching/resolve-merge-conflict/

https://backlog.com/git-tutorial/branching/rebase-branch/

TS-Node: Typescript execute engine

In my previous article, I have described how to create a simple typescript nodejs project. The method works fine in a small project, but take longer compilation time on a large project because its need to compile all typescript files on every change.
Create Node.js & Express.js with Typescript Project

The solution is using ts-node where it direct run the typescript without compiling it to javascript.

1. Follow the steps to create a Node.js & Express.js with Typescript.
2. Type "npm install -g ts-node".
3. Add an entry to package.json.
   
     "scripts": {

       "test": "echo \"Error: no test specified\" && exit 1",

       "build": "tsc -b",

       "start": "node dist/app.js",

       "dev": "nodemon dist/app.js",

       "dev:ts": "nodemon --exec ts-node src/app.ts"

     },
4. Now you can just run the development using 1 console: npm run dev:ts

Best practices - API Architecture, Node.js, CI/CD

NodeJs Best Practices
https://medium.com/@quraanmaram/nodejs-best-practices-5793375c3ad8

API Architecture — Design Best Practices for REST APIs
 https://abdulrwahab.medium.com/api-architecture-best-practices-for-designing-rest-apis-bf907025f5f

10 best practices every Node.js developer must follow
https://medium.com/dhiwise/10-best-practices-every-node-js-developer-must-follow-32072950a5ac
- Further research on google styles guide and logger tools.

Basics of CI/CD
https://levelup.gitconnected.com/basics-of-ci-cd-a98340c60b04

New in Mongoose 5.10: Optimistic Concurrency - Safe Save Conflict

Optimistic concurrency is a better way to handle save conflict compare to the article I wrote previously.

https://scalaoncloud.blogspot.com/2021/03/how-to-avoid-save-conflict-in-mongoose.html

Optimistic concurrency tracks the version of the document and increments the version every time save(). If the version of the document in the database changed between when you loaded the document and when you save(), Mongoose will throw an error.

https://mongoosejs.com/docs/guide.html#optimisticConcurrency

https://thecodebarbarian.com/whats-new-in-mongoose-5-10-optimistic-concurrency.html 

Create Node.js & Express.js with Typescript Project

Here are the steps to create Node.js & Express.js with Typescript Project.

1. Create a folder.
2. Type command "npm init" to create package files.
3. Type "npm install -g typescript" to install typescript.
4. Type "tsc --init" to create typescript config file.
5. Type "npm install express --save" to download express module.
6. Type "npm install nodemon --save-dev" to download nodemon developer tool.
7. Type "install install @types/node --save-dev" to download typescript node definition files.
8. Type "install install @types/express --save-dev" to download typescript express definition files.
9. Edit the package.json
10. Change to main to "dist/app.js" to point to the start javascript file.
11. Add the start scripts, "start" : "nodemon dist/app.js"
12. The package.json will look like below:
13. Edit the tsconfig.json
14. Add "moduleResolution" : "node" under "module" : "commonjs".
15. Change the "outDir" : "./dist". This is the location where typescript compiles the javascript.
16. Change the "rootDir" : "./srv". This is where we store the typescript files.
17. The tsconfig.json will look like below:
    
18. Create /src folder and add app.ts. Edit the app.ts with the below script.
    
    import express from "express";

    
    

    const app = express();

    const port = process.env.port || 3001;

    
    

    // Adding middleway to use syntax req.body.name.

    app.use(express.json());

    
    

    app.get("/", (req, res) => res.send("Hello World!"));

    
    

    app.listen(port, () =>

      console.log(`Example app is listening on post ${port}!`)

    );

    
    
19. Open a terminal run "npm start". This will start the web server using nodemon.
20. Open another terminal run "tsc --watch". This will watch the /src folder to compile the ts to javascript.
21. Call http://localhost:3001/ using postman. If you see "Hello World!", congratulation, you have completed the setup Node.js & Express.js with the Typescript project.
    
    

Below is the project you may download from GitHub.

https://github.com/htsiah/simple-rest-api-using-expressjs-with-typescript

Below GitHub is the example of the Node.js & Express.js project. You may compare the different of project setup.

https://github.com/htsiah/simple-rest-api-using-expressjs