Intro to REST APIs

HTTP/HTTPS

• Hyper Text Transfer Protocol / Secure
• Protocol of the web
• Stateless
• Responsible for communication b/w client & web servers

HTTP Verbs

Method	Purpose
GET	Retrieve resource
POST	Create resource
PUT	Update resource
DELETE	Delete resource

MDN Docs for HTTP Methods

HTTP Status Codes

Codes	Description
1xx	Informational
2xx	Success
3xx	Redirection Message
4xx	Client Error
5xx	Server Error

MDN Docs for Status Code

API (Application Program Interface)

API is a software intermediary that allows two applications to talk to each other.

REST (REpresentational State Transfer)

• Standardized & Simple
• High performance due to caching support
• Highly scalable as stateless
• Not bound to any specific programming language

Commands

Initialize the npm

npn init -y

Install the packages

npm i express nodemon

Make the changes in the package.json

"start": "node index.js",
"dev": "nodemon index.js",

To run the server in dev mode (using nodemon)

npm run dev