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Implement Distributed Rate Limiting with Redis Cluster

distributed-systems redis rate-limiting microservices
Prompt
Design a distributed rate limiting middleware for a microservices architecture using Node.js, Redis Cluster, and Express. The solution must support horizontal scaling across multiple server instances, handle concurrent requests, and provide granular rate limiting by API endpoint, user role, and IP address. Include robust error handling, configurable sliding window algorithms, and automatic key expiration strategies. Provide a comprehensive implementation that can be easily integrated into an existing Express.js API ecosystem.
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JavaScript
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Mar 3, 2026

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Use Cases
  • Preventing abuse of APIs by limiting request rates.
  • Managing traffic spikes during peak usage times.
  • Ensuring fair access for all users in a multi-tenant environment.
Tips for Best Results
  • Set appropriate limits based on user roles.
  • Monitor usage patterns to adjust limits dynamically.
  • Implement alerts for unusual traffic spikes.

Frequently Asked Questions

What is distributed rate limiting?
It's a method to control the rate of API requests across multiple servers.
Why use Redis for rate limiting?
Redis offers fast data access and scalability for managing rate limits effectively.
How can I implement distributed rate limiting?
Use Redis to store request counts and timestamps for each user or API key.
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