0.28.0

• Implement dependency cache per request.

  • This avoids calling each dependency multiple times for the same request.
  • This is useful while calling external services, performing costly computation, etc.
  • This also means that if a dependency was declared as a path operation decorator dependency, possibly at the router level (with .include_router()) and then it is declared again in a specific path operation, the dependency will be called only once.
  • The cache can be disabled per dependency declaration, using use_cache=False as in Depends(your_dependency, use_cache=False).
  • Updated docs at: Using the same dependency multiple times.
  • PR #292.

• Implement dependency overrides for testing.

  • This allows using overrides/mocks of dependencies during tests.
  • New docs: Testing Dependencies with Overrides.
  • PR #291.