Answer
Rate limiting restricts requests per user/IP using Redis counters, middleware, or token bucket algorithms. Prevents abuse.
Quick Answer
Rate limiting restricts how many requests a user can make in a time window. Implement with Redis counters (increment a key, set TTL). Return 429 Too Many Requests when limit is exceeded. Use sliding window or token bucket algorithm for smoother limiting. Apply to login endpoints, API routes, and signup forms. Libraries like symfony/rate-limiter simplify implementation.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ