Installation

Python 3.10+ is required.

pip install limitra

Limitra has zero runtime dependencies. The memory backend works out of the box.

Redis backend

Limitra does not ship redis as a dependency — if you're using Redis for rate limiting, you're most likely already using it elsewhere in your project.

Add it to your project's own dependencies:

pip install redis        # or: poetry add redis, uv add redis, etc.

Limitra detects it automatically. Any redis>=4.0 version works.

Note

If redis is not installed and you configure a Redis backend, Limitra raises ImportError with a clear message at startup.

Local Redis for development

docker run -p 6379:6379 redis:alpine