Node.js FAQ: Top Questions

Rate limiting in Express.js restricts the number of requests a client can make within a time window, preventing abuse and ensuring fair resource usage.

• Middleware: express-rate-limit is commonly used.
• Configuration: Set max requests, time window, and storage (e.g., memory, Redis).
• Benefits: Protects against DoS attacks, API overuse.
• Use Case: Public APIs, authentication endpoints.