What's the best way to implement a Python cache for performance optimization? or How does Python cach

Dude, just use `lru_cache` if you’re starting out. It’s built-in and works for most cases.

Pro tip: Add `@lru_cache(maxsize=None)` if you don’t wanna limit the cache size.

For invalidation, yeah, it’s tricky. Maybe add a timestamp check or version number to your args?

If things get complex, `dogpile.cache` is another option—handles stale data better.