We enthusiastically announce the release of: oslo.cache 1.30.4: Cache storage for OpenStack projects. This release is part of the rocky stable release series. The source is available from: https://opendev.org/openstack/oslo.cache Download the package from: https://pypi.org/project/oslo.cache Please report issues through: https://bugs.launchpad.net/oslo.cache/+bugs For more details, please see below. 1.30.4 ^^^^^^ Bug Fixes * [bug 1819957 (https://bugs.launchpad.net/keystone/+bug/1819957)] If a memcache server disappears and then reconnects when multiple memcache servers are used (specific to the python-memcached based backends) it is possible that the server will contain stale data. The default is now to supply the "flush_on_reconnect" optional argument to the backend. This means that when the service connects to a memcache server, it will flush all cached data in the server. This change only impacts the pooled backend as it is the most likely (with heavy use of greenlet) to be impacted by the problem and is the recommended production configuration. See the help from python-memcached: @param flush_on_reconnect: optional flag which prevents a scenario that can cause stale data to be read: If there's more than one memcached server and the connection to one is interrupted, keys that mapped to that server will get reassigned to another. If the first server comes back, those keys will map to it again. If it still has its data, get()s can read stale data that was overwritten on another server. This flag is off by default for backwards compatibility. Changes in oslo.cache 1.30.3..1.30.4 ------------------------------------ 8ef2778 Update UPPER_CONSTRAINTS_FILE for stable/rocky 1d6d08f Pass `flush_on_reconnect` to memcache pooled backend 09c0a69 OpenDev Migration Patch caf5443 Fix memcache pool client in monkey-patched environments Diffstat (except docs and test files) ------------------------------------- .gitreview | 2 +- oslo_cache/_memcache_pool.py | 36 ++++++++++++++++++++-- .../notes/bug-1819957-ccff6b0ec9d1cbf2.yaml | 24 +++++++++++++++ tox.ini | 2 +- 5 files changed, 77 insertions(+), 4 deletions(-)