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2026-06-09Fixed #37130 -- Skipped DB cache deletion when culling offset is zero.vishwa
2026-06-08Fixed #32785 -- Optimized cull frequency for DBCache.eevelweezel
2026-05-05Fixed #37053 -- Added validate=True to base64.b64decode() calls.Sarah Boyce
2026-03-03Fixed CVE-2026-25674 -- Prevented potentially incorrect permissions on file ↵Natalia
system object creation. This fix introduces `safe_makedirs()` in the `os` utils as a safer alternative to `os.makedirs()` that avoids umask-related race conditions in multi-threaded environments. This is a workaround for https://github.com/python/cpython/issues/86533 and the solution is based on the fix being proposed for CPython. Co-authored-by: Gregory P. Smith <68491+gpshead@users.noreply.github.com> Co-authored-by: Zackery Spytz <zspytz@gmail.com> Refs CVE-2020-24583 and #31921. Thanks Tarek Nakkouch for the report, and Jake Howard, Jacob Walls, and Shai Berger for reviews.
2026-02-03Fixed #36879 -- Identified Django client in Redis client metadata.ar3ph
2025-12-19Fixed #36590 -- Made async cache methods use specialized sync versions if ↵eevelweezel
available. Thanks Simon Charette, Sarah Boyce, and Jacob Walls for reviews.
2025-07-23Refs #36500 -- Rewrapped long docstrings and block comments via a script.django-bot
Rewrapped long docstrings and block comments to 79 characters + newline using script from https://github.com/medmunds/autofix-w505.
2025-07-23Refs #36500 -- Shortened some long docstrings and comments.Mike Edmunds
Manually reformatted some long docstrings and comments that would be damaged by the to-be-applied autofixer script, in cases where editorial judgment seemed necessary for style or wording changes.
2025-07-23Removed double spaces after periods and within phrases.Sarah Boyce
2025-03-05Clarified cryptic comment in django/core/cache/backends/redis.py.Tim Graham
2025-03-01Applied Black's 2025 stable style.Mariusz Felisiak
https://github.com/psf/black/releases/tag/25.1.0
2025-02-18Refs #36005 -- Used datetime.UTC alias instead of datetime.timezone.utc.Mariusz Felisiak
datetime.UTC was added in Python 3.11.
2024-10-28Refs #34900 -- Removed usage of deprecated glob.glob1().earthyoung
2024-01-26Applied Black's 2024 stable style.Mariusz Felisiak
https://github.com/psf/black/releases/tag/24.1.0
2023-06-28Fixed #34681 -- Optimized memcache_key_warnings().Adam Johnson
2023-02-01Refs #33476 -- Applied Black's 2023 stable style.David Smith
Black 23.1.0 is released which, as the first release of the year, introduces the 2023 stable style. This incorporates most of last year's preview style. https://github.com/psf/black/releases/tag/23.1.0
2023-01-18Refs #34233 -- Used str.removeprefix()/removesuffix().Mariusz Felisiak
2023-01-18Fixed #34233 -- Dropped support for Python 3.8 and 3.9.Mariusz Felisiak
2022-12-16Fixed #34212 -- Made RedisCacheClient.incr() use write connection.Leo
Co-authored-by: Sin-Woo Bang <sinwoobang@gmail.com>
2022-12-13Fixed #34209 -- Prevented FileBasedCache.has_key() crash caused by a race ↵Marti Raudsepp
condition.
2022-07-06Fixed #33826 -- Fixed RedisCache.set_many()/delete_many() crash with an ↵Christos Kopanos
empty list.
2022-07-06Used list comprehensions in RedisCache.delete_many().Christos Kopanos
2022-05-16Fixed #33681 -- Made Redis client pass CACHES["OPTIONS"] to a connection pool.Mariusz Felisiak
Thanks Ben Picolo for the report.
2022-05-12Made closing in connection handlers more DRY.Nick Pope
2022-03-24Refs #32365 -- Removed internal uses of utils.timezone.utc alias.Carlton Gibson
Remaining test case ensures that uses of the alias are mapped canonically by the migration writer.
2022-03-17Prevented initialization of unused database connections.Florian Apolloner
2022-02-07Refs #33476 -- Refactored code to strictly match 88 characters line length.Mariusz Felisiak
2022-02-07Refs #33476 -- Reformatted code with Black.django-bot
2022-01-13Refs #29708 -- Stopped inheriting from PickleSerializer by RedisSerializer.Adam Johnson
2021-12-14Fixed #33361 -- Fixed Redis cache backend crash on booleans.Jeremy Lainé
2021-12-09Fixed #33340 -- Fixed unquoted column names in queries used by DatabaseCache.Arsa
2021-10-12Fixed #28401 -- Allowed hashlib.md5() calls to work with FIPS kernels.Ade Lee
md5 is not an approved algorithm in FIPS mode, and trying to instantiate a hashlib.md5() will fail when the system is running in FIPS mode. md5 is allowed when in a non-security context. There is a plan to add a keyword parameter (usedforsecurity) to hashlib.md5() to annotate whether or not the instance is being used in a security context. In the case where it is not, the instantiation of md5 will be allowed. See https://bugs.python.org/issue9216 for more details. Some downstream python versions already support this parameter. To support these versions, a new encapsulation of md5() has been added. This encapsulation will pass through the usedforsecurity parameter in the case where the parameter is supported, and strip it if it is not. Co-authored-by: Mariusz Felisiak <felisiak.mariusz@gmail.com>
2021-09-20Refs #32193 -- Removed MemcachedCache per deprecation timeline.Mariusz Felisiak
2021-09-14Fixed #33012 -- Added Redis cache backend.Daniyal
Thanks Carlton Gibson, Chris Jerdonek, David Smith, Keryn Knight, Mariusz Felisiak, and Nick Pope for reviews and mentoring this Google Summer of Code 2021 project.
2021-09-07Fixed #32076 -- Added async methods to BaseCache.Andrew-Chen-Wang
This also makes DummyCache async-compatible.
2021-09-07Fixed #33060 -- Added BaseCache.make_and_validate_key() hook.Nick Pope
This helper function reduces the amount of duplicated code and makes it easier to ensure that we always validate the keys.
2021-09-07Refs #33060 -- Ensured cache backends validate keys.Nick Pope
The validate_key() function should be called after make_key() to ensure that the validation is performed on the key that will actually be stored in the cache. Co-authored-by: Mariusz Felisiak <felisiak.mariusz@gmail.com>
2021-09-03Refs #33060 -- Added .make_key() in .touch() for dummy cache backend.Nick Pope
All cache operations should use make_key().
2021-08-31Refs #33061 -- Removed unnecessary BaseMemcachedCache.decr().Mariusz Felisiak
2021-08-31Fixed #33061 -- Fixed handling nonexistent keys with negative deltas in ↵Sondre Lillebø Gundersen
incr()/decr() in memcached backends. Thanks Chris Jerdonek for the review.
2021-05-26Fixed #32772 -- Made database cache count size once per set.Michael Lissner
2021-05-18Fixed #32747 -- Prevented initialization of unused caches.Mariusz Felisiak
Thanks Alexander Ebral for the report. Regression in 98e05ccde440cc9b768952cc10bc8285f4924e1f.
2021-05-12Fixed #32366 -- Updated datetime module usage to recommended approach.Nick Pope
- Replaced datetime.utcnow() with datetime.now(). - Replaced datetime.utcfromtimestamp() with datetime.fromtimestamp(). - Replaced datetime.utctimetuple() with datetime.timetuple(). - Replaced calendar.timegm() and datetime.utctimetuple() with datetime.timestamp().
2021-05-05Fixed #32705 -- Prevented database cache backend from checking .rowcount on ↵ecogels
closed cursor. Co-authored-by: Mariusz Felisiak <felisiak.mariusz@gmail.com>
2020-12-17Fixed #29867 -- Added support for storing None value in caches.Nick Pope
Many of the cache operations make use of the default argument to the .get() operation to determine whether the key was found in the cache. The default value of the default argument is None, so this results in these operations assuming that None is not stored in the cache when it actually is. Adding a sentinel object solves this issue. Unfortunately the unmaintained python-memcached library does not support a default argument to .get(), so the previous behavior is preserved for the deprecated MemcachedCache backend.
2020-12-15Fixed typo in django/core/cache/backends/base.py docstring.Abhishek Ghaskata
2020-12-09Fixed #32193 -- Deprecated MemcachedCache.Mariusz Felisiak
2020-12-08Fixed #32233 -- Cleaned-up duplicate connection functionality.Florian Apolloner
2020-12-07Refs #21012 -- Removed unnecessary _create_cache() hook.Florian Apolloner
This removes unused (since d038c547b5ce585cbf9ef5bb7e5298f52e4a243b) workaround to load a cache backend with its dotted import path and moves remaining logic to the CacheHandler. Thanks Tim Graham for the review.
2020-09-16Fixed #29887 -- Added a cache backend for pymemcache.Nick Pope
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