Async¶

The same script object works with either client. Pass a sync client and you get a value; pass an async one and you get an awaitable.

from redis.asyncio import Redis

client = Redis()
remaining = await rate_limit(client, key="user:42", limit=10, ttl=60)

There is no separate decorator, no separate script, and no separate compilation — one @script serves both, and the overloads on __call__ mean a type checker knows which of the two you are looking at:

sync_client: redis.Redis
async_client: redis.asyncio.Redis

a = rate_limit(sync_client, key="u:1", limit=10, ttl=60)  # int
b = rate_limit(async_client, key="u:1", limit=10, ttl=60)  # Awaitable[int]

Script caching, EVALSHA, and the NOSCRIPT reload are handled by redis-py's own script machinery, which this defers to rather than reimplementing.

bind works on async clients just as well, and carries the awaitable through.