We are amped to announce the release of: oslo.cache 1.34.0: Cache storage for OpenStack projects. This release is part of the train 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. 1.34.0 ^^^^^^ 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 1.33.2..1.34.0 ------------------------------------ 8d78f10 OpenDev Migration Patch 1192f18 Pass `flush_on_reconnect` to memcache pooled backend 8b6af73 Update master for stable/stein 2bfb9f4 Update hacking version 66e97bd add python 3.7 unit test job 2451e61 Remove stale comment in _memcache_pool Diffstat (except docs and test files) ------------------------------------- .gitreview | 2 +- .zuul.yaml | 1 + oslo_cache/_memcache_pool.py | 25 ++++++++++++++++++---- oslo_cache/backends/etcd3gw.py | 6 +++--- oslo_cache/core.py | 4 ++-- .../notes/bug-1819957-ccff6b0ec9d1cbf2.yaml | 24 +++++++++++++++++++++ releasenotes/source/index.rst | 1 + releasenotes/source/stein.rst | 6 ++++++ test-requirements.txt | 2 +- 9 files changed, 60 insertions(+), 11 deletions(-) Requirements updates -------------------- diff --git a/test-requirements.txt b/test-requirements.txt index 0fc8517..a9e9f99 100644 --- a/test-requirements.txt +++ b/test-requirements.txt @@ -4 +4 @@ -hacking!=0.13.0,<0.14,>=0.12.0 # Apache-2.0 +hacking>=1.1.0,<1.2.0 # Apache-2.0