Learning Roadmap¶

1. Install — pip install pico-caching (Getting Started).
2. First hit — @cacheable on an expensive lookup; verify with a call counter that the second call is free.
3. Tune TTL — per-method ttl_seconds vs caching.default_ttl_seconds.
4. Custom keys — key=lambda user_id: f"user:{user_id}" when reprs are noisy.
5. Your backend — implement CacheBackend as a @component (Redis, memcached); it replaces the built-in automatically (Architecture).
6. Invalidate — inject the backend; delete/clear until @cache_evict exists.