alimits 1.0.0

Provides asyncio storage and strategy implementations for the limits library.

alimits

Provides asyncio-compatible implementations of the limits library storage and strategy options. Used in the slowapi library.

Documentation is available here.

Available on PyPi at alimits.

Strategies

This library implements a couple asyncio limiting strategies:

• Fixed window → (alimits.strategies.AsyncFixedWindowRateLimiter)
• Moving window → (alimits.strategies.AsyncMovingWindowRateLimiter)
• Fixed window with elastic expiration → (alimits.strategies.AsyncFixedWindowElasticRateLimiter)

Resources

1. https://limits.readthedocs.io/en/stable/strategies.html
2. https://medium.com/figma-design/an-alternative-approach-to-rate-limiting-f8a06cf7c94c
3. https://cloud.google.com/architecture/rate-limiting-strategies-techniques

Storage Backends

Each of the above rate limiters support a couple different storage backends:

• Memory (in-memory, volatile) → (alimits.storage.AsyncMemoryStorage)
• Redis (on-disk or in-memory, persistent) → (alimits.storage.AsyncRedisStorage)

Other storage backends are a WIP.

License

Copyright (c) 2021 Elias Gabriel, 2020 Laurent Savaete, 2015 Ali-Akber Saifee

This software is licensed under the MIT License.

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