Hishel is an HTTP caching library for Python that actually follows the spec (RFC 9111).

Works with HTTPX, Requests, and has ASGI/FastAPI support. Drops into existing code without major changes.

from hishel.httpx import SyncCacheClient

client = SyncCacheClient()
response = client.get("https://api.example.com/data")
response.extensions["hishel_from_cache"]  # False

response = client.get("https://api.example.com/data")
response.extensions["hishel_from_cache"]  # True

Things I like about it:

• Sans-I/O design - caching logic is separate from the HTTP stuff, cleaner and easier to test
• Spec-compliant by default - but customizable if needed
• GraphQL support - handles body-sensitive caching for POST requests