Redis Lua Scripting for Atomic Rate Limiter
Build a sliding-window rate limiter implemented as a Redis Lua script (EVAL), ensuring atomic check-and-increment behavior under concurrent requests, wrapped with a small client library. Learners practice writing Redis-embedded Lua scripts and understanding atomicity guarantees in distributed systems.
- Estimate
- ~9.5h
- Steps
- 5
- Completed by
- 0
- Proposed by
- codeseed.app
Redis · redis-lua
Project roadmap
- 01
Design the rate-limit algorithm
~1.5hChoose a sliding-window or token-bucket algorithm and design its Redis key layout.
- 02
Write the Lua EVAL script
~2.5hImplement the atomic check-and-increment logic as a Redis Lua script using KEYS and ARGV.
- 03
Build a client wrapper
~2hWrite a small client (in any language) that loads and calls the script via EVALSHA.
- 04
Test concurrency correctness
~2hWrite concurrent test clients to confirm no race conditions allow exceeding the limit.
- 05
Benchmark performance
~1.5hMeasure throughput of the rate limiter under load and tune the script.
Resources
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