HTTP Status Codes

 

HTTP Status Codes Deep Dive

Understanding status codes is important for interviews.

2xx Success

  • 200 OK

  • 201 Created

  • 204 No Content

4xx Client Errors

  • 400 Bad Request

  • 401 Unauthorized

  • 403 Forbidden

  • 404 Not Found

5xx Server Errors

  • 500 Internal Server Error

  • 503 Service Unavailable

Best Practice:Always return meaningful error messages.


BEST API Design Best Practices

Use Nouns, Not Verbs

❌ /getUsers
✅ /users

Use Proper Resource Hierarchy

/users/1/orders/
/users/1/orders/10/

Version Your API

/api/v1/users/

Use Pagination

GET /users?page=1&limit=10

Use Filtering

GET /users?active=true

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