Sourced from cachetools's changelog.

v6.0.0 (2025-05-23)

• Require Python 3.9 or later (breaking change).

• Remove MRUCache and the @func.mru_cache decorator (breaking change).

• Add an optional condition parameter to the @cached and @cachedmethod decorators, which, when used with a threading.Condition instance, should improve cache stampede <https://en.wikipedia.org/wiki/Cache_stampede>_ issues in massively parallel environments. Note that this will inflict some performance penalty, and therefore has to be enabled explicitly.

• Convert the cachetools.func decorators to use a threading.Condition instance to deal with cache stampede <https://en.wikipedia.org/wiki/Cache_stampede>_ issues. Note that this may result in a noticable performance degradation, depending on your actual use case.

• Deprecate support for cache(self) returning None to suppress caching with the @cachedmethod decorator.

• Improve documentation.

• Update CI environment.

v5.5.2 (2025-02-20)

• Reduce number of @cached lock/unlock operations.

• Improve documentation.

• Update CI environment.

v5.5.1 (2025-01-21)

• Add documentation regarding caching of exceptions.

• Officially support Python 3.13.

• Update CI environment.

v5.5.0 (2024-08-18)

... (truncated)

• e497575 Release v6.0.0.
• 0a8f391 Update related projects section.
• 3afef37 Pre-release v6.0.0b4.
• 34815dd Update documentation for v6.0.0.
• 8854b50 Add intersphinx extension.
• 0af4a07 Bump codecov/codecov-action from 5.4.0 to 5.4.2
• ad42371 Merge pull request #349 from tkem/dependabot/github_actions/actions/setup-pyt...
• 987c076 Bump actions/setup-python from 5.5.0 to 5.6.0
• 27d0dce Add cache_condition wrapper attribute (and refactor a bit).
• 37b5c12 Use class method attributes in tests.
• Additional commits viewable in compare view

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