Jwt, Session, API, API Gateway

I discussed Session, JWT, API & API Gateway.
Several types of API Gateway and accessing related public/protected services.

1. JWT, SESSION, API ,API Gateway Mohammad Kabir Hossain
2. Session: A session is a way to store temporary information, used across multiple web pages. Otherway, Session is a unique string/token used to identify a client across server.
3. How session works:
4. How session failed on multiple server
5. Shared database for session problem on multiple sever
6. JWT (JSON WEB TOKEN): A JSON Web Token is a safe, compact, and self-contained way of transmitting information between multiple parties in the form of a JSON object. Used for authorization mostly.
7. HOW JWT works:
9. What is api Api is a tool/way for transferring data from one application to another applications. Otherway, api is a way of talking application to application.
10. How API works: API works like as the picture. Suppose we are in a restaurant and order for a pizza to waiter. The waiter transferred your request to kitchen. Then the kitchen processed your request, then delivered to you. Think User and Kitchen as a application. And they are talking using api.
12. API Gateway Amazon API Gateway is an AWS service for creating, publishing, maintaining, monitoring, and securing REST, HTTP, and WebSocket APIs at any scale. Anotherway, An API gateway is an API management tool that sits between a client and a collection of backend services. An API gateway acts as a reverse proxy to accept all application programming interface (API) calls, aggregate the various services required to fulfill them, and return the appropriate result.
14. API Gateway authorization using cognito App request to api gateway authorization cognito.
15. API Gateway with JWT authorizer
16. API Gateway using custom Lambda authorizer: