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🚦 Rate Limiting in NestJS Using @nestjs/throttler
- Rate limiting controls the number of requests a user or system can make to a server in a given period to prevent flooding.
- Implement rate limiting in NestJS using @nestjs/throttler package to enhance server security and stability.
- It prevents increased server load, slower response times, downtime, or crashes caused by excessive requests.
- Installation involves npm install @nestjs/throttler and setting up multiple throttling rules in AppModule.
- Global rate limits for all routes can be configured along with overriding limits, skipping limits, or applying based on users.
- By exceeding limits, users get a 429 Too Many Requests error indicating reached limits.
- @Throttle() decorator customizes limits for specific routes, while @SkipThrottle() excludes controllers or routes from rate limiting.
- Custom guards, like EmailThrottlerGuard, enable rate limiting based on user emails instead of IP addresses for personalized limits.
- Multiple throttle profiles like 'short' and 'long' offer varied limits for different routes for better control and security.
- Using @nestjs/throttler allows for easy global rate limit application, per-route overrides, custom user tracking, and multiple limit strategies.
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