How can I implement caching in Python?

How can I implement caching in Python?

You can implement caching in Python using libraries like functools.lru_cache or by using external caching systems like Redis.

Can you show me an example using functools.lru_cache?

Sure! Here's a simple example:

from functools import lru_cache

@lru_cache(maxsize=None)
def fibonacci(n):
    if n < 2:
        return n
    return fibonacci(n-1) + fibonacci(n-2)

What are the benefits of using caching?

Caching can significantly improve performance by reducing the time it takes to retrieve data, especially for expensive computations.

Are there any downsides to caching?

Yes, caching can consume additional memory and may lead to stale data if not managed properly.