List some common middleware tasks?

Q: List some common middleware tasks?

Logging Authentication and Authorization Handling CORS (Cross-Origin Resource Sharing) Parsing Request Body Serving Static Files Request Rate Limiting Error Handling Custom Headers / Response Modification Compression

Difficulty: 5/10

logging, authentication, error handling

Middleware in Express (or other web frameworks) is like the bouncer, gatekeeper, or stage crew — it handles stuff before or between your app's logic and the request/response cycle. Here are some common things middleware is used for:

1
Logging
2
Authentication and Authorization
3
Handling CORS (Cross-Origin Resource Sharing)
4
Parsing Request Body
5
Serving Static Files
6
Request Rate Limiting
7
Error Handling
8
Custom Headers / Response Modification
9
Compression

Scenario Questions

0-2 years experience

Follow-up Questions