I've noticed, that response model is missing in the OpenAPI spec and Swagger for @cache decorated endpoints unless response_model is specified explicitly in the endpoint handler decorator, which is optional for newer versions of FastAPI. Specifying return type annotation of a handler function should be enough.

Versions (from pyproject.toml):

• fastapi-cache2 = {git = "https://github.com/long2ice/fastapi-cache.git", extras = ["redis"]}
• fastapi = "^0.101.0"