Ussuri Series Release Notes

2.3.1-5

New Features

• Add new options (hashclient_retry_attempts, hashclient_retry_delay, dead_timeout) to allow to configure pymemcache’s HashClient use through dogpile.cache’s pymemcache backend. Those options expose pymemcache params that allow configuring the failover for memcached cluster.

• Add new options (enable_retry_client, retry_attempts, retry_delay) to add retry mechanisms to the pymemcache backend.

• New options (enable_socket_keepalive, socket_keepalive_idle, socket_keepalive_interval, socket_keepalive_count) allow to use and configure pymemcache’s socket keepalive capabilities.

2.3.1

New Features

• Added a new memcached driver that uses pymemcache through dogpile.cache.

  If willing to use this driver, make sure you have both dogpile.cache>=1.1.2 and pymemcache>=3.4.0 installed.

2.2.0

Bug Fixes

• Fix the memcache_pool backend broken in oslo.cache’s version 2.1.0 by switching from a python-memcache based client to a pymemcache based client. Reintroducing the client based on python-memcached as the default client for the memcache_pool dogpile backend.

2.1.0

Bug Fixes

• Switch from python-memcached to pymemcache for memcache_pool. This avoids issues with thread.local usage and fixes errors seen with inheritance. This is only applicable with dogpile.cache memcached backend.

2.0.0

Upgrade Notes

• Python 2.7 support has been dropped. The minimum version of Python now supported by oslo.cache is Python 3.6.

1.37.0

Upgrade Notes

• The default value for memcache_socket_timeout has been lowered from 3 seconds to 1 second. The positive side-effect of this can be found in downstream changes. If you deployment relies explicitly on a timeout of 3 seconds, please set that override in your configuration.