Building·DevTools·2025
Rate Limiter Library
Token bucket + sliding window in Redis Lua — npm + PyPI dual-publish.
Redis LuaNode.jsPythonFastAPInpm
RoleSolo builderScopeOSS · Algorithm · BackendStatusIn progress · target ship Q3 2026
Overview
A production-ready rate limiter library implementing two core algorithms in Redis Lua scripts (atomic, no race conditions): token bucket for smooth burst control and sliding window for strict per-window limits. Published to npm (for Node/Next.js) and PyPI (for FastAPI/Django). The algorithm is clean and auditable. The artifact is real — published to npm and PyPI, not sitting in a private repo.
Why this matters
Dual-published OSS (npm + PyPI) — signals product thinking, not just feature shipping.
Implementation Highlights
- ●Token bucket in Redis Lua — atomic debit with no distributed race conditions
- ●Sliding window counter with configurable window size and burst allowance
- ●Published to npm (@rahulnainala/rate-limiter) and PyPI for dual-stack use
- ●FastAPI middleware + Next.js edge middleware adapters
ShippedIn progress · target ship Q3 2026
Dual-published OSS — npm + PyPI. Token bucket + sliding window in Redis Lua.
Key highlights
- ●Token bucket in Redis Lua — atomic debit with no distributed race conditions
- ●Sliding window counter with configurable window size and burst allowance
- ●Published to npm (@rahulnainala/rate-limiter) and PyPI for dual-stack use
- ●FastAPI middleware + Next.js edge middleware adapters
Active development — building this as a production-grade distributed systems reference.