Rate Limiter Python Packages

slowapi

A rate limiter for Starlette and FastAPI

pyrate-limiter

⚔️Python Rate-Limiter using Leaky-Bucket Algorithm Family

throttler

🔀⏳ Easy throttling with asyncio support

throttled-py

🔧 High-performance Python rate limiting library with multiple algorithms (Fixed Window, Sliding Window, Token Bucket, Leaky Bucket & GCRA) and storage backends (Redis, In-Memory).

rush

Modular, way of implementing rate-limiting in python with a few handy default implementations

mthrottle

A simple and generic rate limiter to prevent too many function calls or http requests.

pyresilience

Unified resilience patterns for Python — retry, circuit breaker, timeout, fallback, bulkhead, rate limiter, and cache in one decorator. Python's Resilience4j.

self-limiters

Async distributed rate limiters for Python

aiorate

Loop frequency regulation for asyncio

token-throttle

Multi-resource rate limiting for LLM APIs. Reserve tokens before you call, refund what you don't use, stay under the limit across workers.

asyncio-redis-rate-limit

Rate limiter for async functions using Redis as a backend.

aiohttp-ratelimiter

A rate limiter for the aiohttp.web framework

throttlekit-py

Python client for ThrottleKit — distributed rate limiting against one Node core via gRPC (full check/peek/forecast) or direct Redis (the core's own Lua, bit-identical). Conformance-proven on shared golden vectors.

djangorestframework-ratelimit

Cache-based rate-limiting for Django and Django REST Framework

asyncmq

Supercharge your async applications with tasks so fast, you’ll think you’re bending time itself.

adaptive-rate-limiter

Provider-agnostic adaptive rate limiting for AI/ML APIs with intelligent scheduling, streaming support, and distributed backends

ratellmiter-ai

Rate limiter for LLM clients

fastapi-cap

A robust, extensible, and production-ready rate limiting library for FastAPI, supporting multiple algorithms and Redis backend.

fastlimit

Rate limiting for FastAPI with dual (IP/user) buckets.

credit-rate-limit

Easily rate limit async requests to API using credits, computation unit per second (CUPS) or request units, and to those just counting the number of requests per time unit

llmratelimiter

Distributed rate limiter for LLM APIs with FIFO queues, TPM/RPM limits, and burst prevention

async-limiter

Python asyncio library for concurrent and time-based rate limiting

fastrict

Fastrict - Enterprise FastAPI Rate Limiter

centralized-rate-limiter

Utility to handle rate limiting and retries in a centralized manner. Single rate limit for all your request methods.