Async Support

The namespace limits.aio mirrors limits.storage and limits.strategies with async variants.

The following async storage backends are implemented:

• In-Memory

• Redis (via coredis or redis-py. Refer to limits.aio.storage.RedisStorage.implementation for details on selecting the dependency)

• Memcached (via memcachio)

• MongoDB (via motor)

Quick start

This example demonstrates the subtle differences in the limits.aio namespace:

from limits import parse
from limits.storage import storage_from_string
from limits.aio.strategies import MovingWindowRateLimiter

redis = storage_from_string("async+redis://localhost:6379")

moving_window = MovingWindowRateLimiter(redis)
one_per_minute = parse("1/minute")

async def hit():
   return await moving_window.hit(one_per_minute, "test_namespace", "foo")

Refer to Async Storage for more implementation details of the async storage backends, and Async Strategies for the async rate limit strategies API.