API Gateway /Application layer

• What is an API gateway?
• Why use API gateway?
• Core functionalities ?
• While designing APIS
  • Naming
  • URI definition
  • Single responsibility principle
  • number of params
  • Type of request GET/POST/PUT/PATCH/DELETE
  • Authentication
  • Return status - 200, 201, 400,401, 403,404, 429, 500, 503
• Additional items to discuss
  • Rate limiting
  • API versioning
  • Error handling
  • Caching
• Listviews (special operations)
  • Pagination
  • Sorting
  • Searching
  • GET/POST
• Alias
• Documentation
• Cheat sheet for each API
  • Objects
  • Each object - kind of CRUDL
  • URI
  • Request
    • Type
    • params
  • Response
    • Response code
    • Happy
    • Error