xF1 Add-on Zend Redis Cache 1.6.0

• Update examples of how to get a master/slave instance
  • Document load_from_slave option
• Load cached forum thread count from slave redis if possible

• Prevent "Undefined index: moderated" error with some custom add-ons when forum count caching is enabled.

• When loading cached CSS; if loading from the slave failed, try loading from the master before regenerating css.
• When selecting a slave, actually use the cached list of local machine IPs.
  • This code is currently Linux only.
• Updated Readme to document that the 'prefer local slave' option is currently Linux only.

• Relicense add-on code from Unlicence to MIT licence.
• Ensure loading from a slave is disabled from the AdminCP
• Ensure loading from a slave is disabled on a CSS cache-miss.

• Use xen:number when displaying redis stats
• Do not display instantaneous upload/download traffic if the backend Redis version doesn't support it (ie pre-3.0)

Redis Cache

• Add-on compatibility tweak
• Bugfix support for currently undocumented 'load_from_slaves' option which allows issuing loads to slaves when running in HA.
  • Doesn't work 100% well with sessions due to latency.

• Attempt to reduce latency warnings or broken pipe due to timeouts.
  • Tweak redis command usage to block less by fetching less data at once when invalidating css caches
• Track latest upstream libraries

• Redis Sentinel support for high-availability. See http://redis.io/topics/sentinel for more information.
• Enable with:
  Code:
  $config['cache']['backendOptions']['sentinel_master_set'] = 'mymaster';
  $config['cache']['backendOptions']['server'] = '127.0.0.1:26379';
  • 'server' now points to a comma delimited list of sentinal servers to find the master.
  • 'mymaster' must match sentinel configuration.
  • the port must be explicitly listed

• Update redis library to fix compatibility issue when phpredis is not installed.
• Fixes various methods for scanning for keys.
  • Required for Trending Content Tags 1.1.0 (not yet released)

• Display phpredis module version and is lua is enabled on the Redis Info block on the AdminCP home page.