installing node ubuntu

  https://www.digitalocean.com/community/tutorials/install-uninstall-nodejs-ubuntu
  * note : check LTS ppa link
  https://github.com/nodesource/distributions

node : node is not a framework, node is an run time env for js

  cross platfrom
  opensource
  run time environment for java script outside browser


  great for prototyping and agile development
  superfast and highly scalable
  javascript everywhere : fullstack

  architecture
  js code -> js engine(v8) -> execute

  history : browser was only rte for javascript
  after 2009 : ryan dahl : node (v8 embedded in c++) 


node = v8(chrome uses as js engine) embedded in c++

link for creating node project

        https://www.taniarascia.com/how-to-install-and-use-node-js-and-npm-mac-and-windows/

todo

        https://github.com/goldbergyoni/nodebestpractices

node js follows non blocking, asynchronous model

        synchronous
              one thread per one request
              add another server if request outnumber threads

        asynchronous
              one thread handles multiple request by event loop
              effective usage of idle time of thread
              event queue informs thread that data is ready to send

when to use node

              when not to use node
              do not use node for cpu instensive apps : video/audio

              when to use node : 
              data intensive and real time apps(web app)

use nodemon for reloading node project

        for linux : npx nodemon index.js 

best practice

        https://www.educative.io/answers/how-to-use-the-nodejs-httpserverresponsestatuscode-property

practice

        https://github.com/bezkoder/node-js-tutorials

nvm commands

        https://gist.github.com/chranderson/b0a02781c232f170db634b40c97ff455