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[3.11] gh-107619: Extend functools LRU cache docs with generators and async functions (GH-107934) #108162

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Aug 20, 2023
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[3.11] gh-107619: Extend functools LRU cache docs with generators and async functions (GH-107934) #108162

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5 changes: 3 additions & 2 deletions Doc/library/functools.rst
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Expand Up @@ -211,8 +211,9 @@ The :mod:`functools` module defines the following functions:

In general, the LRU cache should only be used when you want to reuse
previously computed values. Accordingly, it doesn't make sense to cache
functions with side-effects, functions that need to create distinct mutable
objects on each call, or impure functions such as time() or random().
functions with side-effects, functions that need to create
distinct mutable objects on each call (such as generators and async functions),
or impure functions such as time() or random().

Example of an LRU cache for static web content::

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