Redis Object Cache

• Use QM_Data_Cache instead of QM_Data
• Fixed WP_Error use statement non-compound name warning

• Added WordPress 6.1 wp_cache_supports() function
• Updated Predis to v2.0.3
• Avoid early microtime() calls in WP_Object_Cache::get()
• Support Query Monitor's new QM_Data class
• Throw exception of pipeline returns unexpected results

• Added redis_cache_add_non_persistent_groups filter
• Fixed wp_add_dashboard_widget parameters
• Fixed WP_REDIS_SERVERS replication issue with Predis v2.0
• Fixed WP_REDIS_CLUSTER string support
• Fixed issue when MGET fails in get_multiple() call
• Fixed several warnings in the event of pipeline failures

• Fixed SVN discrepancies

• Fixed is_predis() call

• Added is_predis() helper

• Fixed bug in wp_cache_add_multiple() and wp_cache_set_multiple()

• Bumped PHP requirement to 7.2
• Renamed WP_REDIS_DIR to WP_REDIS_PLUGIN_DIR
• Fixed rare fatal error in diagnostics
• Allow Predis v1.1 Composer installs
• Support using WP_REDIS_CLUSTER string

• Fixed a bug in wp_cache_delete_multiple() when using Predis
• Fixed a bug in wp_cache_add_multiple() when cache addition is suspended

• Removed broken wp_cache_add_multiple() function

• Added support for Relay
• Minor UX fixes and improvements
• Updated ApexCharts to v3.31.0

• PHP 8.1 compatibility fixes
• Upgraded to Predis v1.1.9
• Added settings link to widget
• Overhauled diagnostics pane
• Updated ApexCharts to v3.30.0
• Redirect to plugin settings after activation
• Fixed wrong path to diagnostics.php file
• Fixed chart overflow in settings tab
• Fixed Predis cluster ping
• Avoid warning when content folder is not writeable

• Added metrics diagnostics
• Added WP_Object_Cache::decr() alias
• Moved diagnostics.php file

• Fix wp.org release

• Make metric identifier unique
• Set unique prefix for sites hosted on Cloudways
• Don't print HTML debug comment when WP_CLI is true

• Added redis_object_cache_trace action and WP_REDIS_TRACE constant
• Updated ApexCharts to v3.26.0
• Fixed and issue with WP_REDIS_DISABLE_METRICS

• Code cleanup
• Fixed missing metrics
• Fixed filesystem test

• Updated Credis to v1.11.4
• Fixed drop-in notice styling
• Moved metrics into dedicated class
• Added redis_cache_validate_dropin filter
• Use WP_DEBUG_DISPLAY (instead of WP_DEBUG) constant to display debug information
• Fixed rare error in wp_cache_get_multiple()
• Removed intval() usage

• Reverted build_key() changes due to issues in multisite environments

• Made Object Cache Pro card translatable
• Added WP_REDIS_SERIALIZER to diagnostics
• Improved speed of build_key()
• Support settings WP_REDIS_PREFIX and WP_REDIS_SELECTIVE_FLUSH via environment variable
• Added WP_REDIS_METRICS_MAX_TIME to adjust stored metrics timeframe
• Delay loading of text domain and schedule until init hook
• Upgraded bundled Predis library to v1.1.6
• Prevent variable referencing issue in connect_using_credis()

• Updated bundled Predis library to v1.1.4
• Made redis-cache a global group for improved metrics on multisite
• Switched to short array syntax
• Added @since tags to all functions
• Use parse_url() instead of wp_parse_url() in drop-in
• Fixed plugin instance variable name in wp redis status

• Fixed bytes metrics calculation
• Fixed an issue with non-standard Predis configurations
• Improve WordPress Coding Standards

• Fixed an issue in wp_cache_get_multiple() when using Predis
• Prevent undefined index notice in diagnostics

• Fixed unserializing values in wp_cache_get_multiple()

• Highlight current metric type using color
• Show "Metrics" tab when metrics are disabled
• Refactored connection and Redis status logic
• Updated Predis to v1.1.2
• Remove Predis deprecation notice
• Fixed fetching derived keys in wp_cache_get_multiple()

• Fixed tabs not working in 2.0.6 and 2.0.7 due to WP.org SVN issue

• Added experimental filesystem test to diagnostics
• Refactored settings tab logic (fixed jumping, too)
• Fixed issues with wp_cache_get_multiple()
• Return boolean from wp_cache_delete()
• Use redis-cache as JS event namespace
• Hide Pro line in widget when banners are disabled
• Renamed redis_object_cache_get_multi action to redis_object_cache_get_multiple

• Fixed issue with wp_cache_get_multiple()

Version 2.0 is a significant rewrite of the plugin. Please read the v2.0.0 release notes.

• Fixed multisite action buttons not working
• Removed outdated PHP 5.4 warning
• Added read_timeout support to Credis
• Display connection parameters when using Credis
• Added wiki link to Predis upgrade notice

Version 2.0 is a significant rewrite of the plugin. Please read the v2.0.0 release notes.

• Attempt to reliably update the dropin when it's outdated
• Show ACL username on settings screen
• Show full diagnostics with wp redis status
• Always set FS_CHMOD_FILE when copying the object-cache.php
• Don't encode bullets in password diagnostics
• Call redis_object_cache_update_dropin during dropin update

Version 2.0 is a significant rewrite of the plugin. Please read the v2.0.0 release notes.

• Hide "Metrics" tab when metrics are disabled
• Fixed admin.js not loading in multisite environments
• Avoid fatal error when interacting with metrics but Redis went away
• Added WP_Object_Cache::__get() for backwards compatibility

Version 2.0 is a significant rewrite. Please read the v2.0.0 release notes.

• Updated POT file and comments for translators

Version 2.0 is a significant rewrite. The plugin now requires PHP 5.6, just like WordPress 5.2 does.

The GitHub and Composer repository was moved from tillkruss/redis-cache to rhubarbgroup/redis-cache.

• Require PHP 5.6
• Plugin is now "network-only"
• Switch to WPCS for code standards
• Overhauled the settings screen
• Added object cache metrics (on dashboard widget and settings)
• Added support for Query Monitor
• Added Rhubarb\RedisCache namespace to all files
• Added support for WP 5.5's new wp_cache_get_multi() function
• Added redis_object_cache() function to retrieve plugin instance
• Added dropin warnings to network dashboard
• Added support for setting Sentinel database numbers
• Support Redis 6 ACL username and password authentication
• Support overwriting existing dropin on setting screen
• Use singleton pattern to instantiate plugin
• Use Composer to install and load Predis
• Update object cache dropin during plugin update
• Use separate methods to connect with all clients
• Removed CUSTOM_USER_TABLE and CUSTOM_USER_META_TABLE weirdness
• Added themes as ignored group
• Changed default connection and read timeout to 1 second
• Prevent race condition in add_or_replace()
• Renamed WP_CACHE_KEY_SALT to WP_REDIS_PREFIX for clarity
• Replaced "slave" terminology with "replica"
• Only SELECT database when it's not 0

• Support older versions of Query Monitor
• Made "Dropin" status more helpful
• Hide Redis version in settings when it isn't available
• Collapsed dependency paths using composer-custom-directory-installer package
• Prevent QM_Collector conflicts with other plugins
• Prevent metric issues when cache is not available
• Fixed "Settings" link in plugin list
• Fixed WP_REDIS_DISABLED logic

• Fixed issue with footer comment showing during AJAX requests

• Improved group name sanitization (thanks @naxvog)
• Prevent fatal error when replacing foreign dropin
• Added HTML footer comment with optional debug information
• Removed prefix suggestions

The HTML footer comment only prints debug information when WP_DEBUG is enabled. To disable the comment entirely, set the `WPREDIS_DISABLE_COMMENTconstant totrue`._

• Fixed missing $info variable assignment in constructor
• Fixed MaxTTL warning condition
• Switched to using default button styles

• Added warning message about invalid MaxTTL
• Added warning about unmaintained Predis library
• Added suggestion about shorter, human-readable prefixes
• Added Redis Cache Pro compatibility to settings
• Fixed flushing the cache when the prefix contains special characters
• Fixed calling Redis INFO when using clusters
• Cleaned up the settings a little bit

• Added support for PhpRedis TLS connections
• Added support for timeout, read timeout and password when using PhpRedis cluster
• Fixed issue with INFO command
• Fixed object cloning when setting cache keys

• Added object cloning to in-memory cache
• Fixed PHP notice related to read_timeout parameter

Please flush the object cache after updating the drop to v1.5.5 to avoid dead keys filling up Redis memory.

• Removed lowercasing keys
• Remove scheduled metrics event
• Fixed Redis version call when using replication

• Removed metrics

• Fixed: Call to undefined function get_plugin_data()
• Fixed: Call to undefined method WP_Object_Cache::redis_version()

• Added Redis version to diagnostics
  • Added WP_REDIS_DISABLE_BANNERS constant to disable promotions
  • Fixed an issue with redis.replicate_commands()

This plugin turned 5 years today (Nov 14th) and its only fitting to release the business edition today as well. Redis Cache Pro is a truly reliable, highly optimized and easy to debug rewrite of this plugin for SMBs.

• Added execution times to actions
• Added WP_REDIS_VERSION constant
• Fixed PhpRedis v3 compatibility
• Fixed an issue with selective flushing
• Fixed an issue with mb_* functions not existing
• Replaced Email Address Encoder card with Redis Cache Pro card
• Gather version metrics for better decision making

Since Predis isn't maintained any longer, it's highly recommended to switch over to PhpRedis (the Redis PECL extention).

• Improved Redis key name builder
• Added support for PhpRedis serializers
• Added redis_object_cache_error action
• Added timeout, read-timeout and retry configuration
• Added unflushable groups (defaults to ['userlogins'])
• Fixed passwords not showing in server list

• Require PHP 5.4 or newer
  • Use pretty print in diagnostics
  • Throw exception if Redis library is missing
  • Fixed cache not flushing for some users
  • Fixed admin issues when WP_REDIS_DISABLED is false

• Added graceful Redis failures and WP_REDIS_GRACEFUL constant
  • Improved cluster support
  • Added redis_cache_expiration filter
  • Renamed redis_object_cache_get filter to redis_object_cache_get_value

• Fixed potential fatal error related to wp_suspend_cache_addition()

• Added support for igbinary
  • Added support for wp_suspend_cache_addition()

• Fixed WP_REDIS_SHARDS not showing up in server list
  • Fixed WP_REDIS_SHARDS not working when using PECL extension
  • Removed WP_REDIS_SCHEME and WP_REDIS_PATH leftovers

• Switched from single file Predis version to full library

• Revert back to single file Predis version

• Added support for Redis Sentinel
  • Added support for sharing
  • Switched to PHAR version of Predis
  • Improved diagnostics
  • Added WP_REDIS_SELECTIVE_FLUSH
  • Added $fail_gracefully parameter to WP_Object_Cache::__construct()
  • Always enforce WP_REDIS_MAXTTL
  • Pass $selective and $salt to redis_object_cache_flush action
  • Dont set WP_CACHE_KEY_SALT constant

• Added basic diagnostics to admin interface
  • Added WP_REDIS_DISABLED constant to disable cache at runtime
  • Prevent "Invalid plugin header" error
  • Return integer from increment() and decrement() methods
  • Prevent object cache from being instantiated more than once
  • Always separate cache key prefix and group by semicolon
  • Improved performance of build_key()
  • Only apply redis_object_cache_get filter if callbacks have been registered
  • Fixed add_or_replace() to only set cache key if it doesn't exist
  • Added redis_object_cache_flush action
  • Added redis_object_cache_enable action
  • Added redis_object_cache_disable action
  • Added redis_object_cache_update_dropin action

• Added WP-CLI support
  • Show host and port unless scheme is unix
  • Updated default global and ignored groups
  • Do a cache flush when activating, deactivating and uninstalling

• Updated Predis to v1.1.1
  • Added redis_instance() method
  • Added incr() method alias for Batcache compatibility
  • Added WP_REDIS_GLOBAL_GROUPS and WP_REDIS_IGNORED_GROUPS constant
  • Added redis_object_cache_delete action
  • Use WP_PLUGIN_DIR with WP_CONTENT_DIR as fallback
  • Set password when using a cluster or replication
  • Show Redis client in stats()
  • Change visibility of $cache to public
  • Use old array syntax, just in case

• Make sure $result is not false in WP_Object_Cache::get()

• Fixed connection issue

• New admin interface
  • Added support for wp_cache_get()'s $force and $found parameter
  • Added support for clustering and replication with Predis

• Added composer.json
  • Added deactivation and uninstall hooks to delete object-cache.php
  • Added local serialization functions for better advanced-cache.php support
  • Updated bundled Predis version to 1.0.3
  • Updated heading structure to be semantic

• Added redis_object_cache_set action
  • Added redis_object_cache_get action and filter
  • Prevented duplicated admin status messages
  • Load bundled Predis library only if necessary
  • Load bundled Predis library using WP_CONTENT_DIR constant
  • Updated stats() method output to be uniform with WordPress

• UI improvements

• Added Multisite support
  • Moved admin menu under Settings menu
  • Fixed PHP notice in get_redis_client_name()

• Call select() and optionally auth() if HHVM extension is used

• Added support for HHVM's Redis extension
  • Added support for PCEL Redis extension
  • Added WP_REDIS_CLIENT constant, to set prefered Redis client
  • Added WP_REDIS_MAXTTL constant, to force expiration of cache keys
  • Improved add_or_replace(), get(), set() and delete() methods
  • Improved admin screen styles
  • Removed all internationalization/localization from drop-in

• Added "Flush Cache" button
  • Added support for UNIX domain sockets
  • Improved cache object retrieval performance significantly
  • Updated bundled Predis library to version 1.0.1

• Load plugin translations
  • Hide global admin notices from non-admin users
  • Prevent direct file access to redis-cache.php and admin-page.php
  • Colorize "Disable Object Cache" button
  • Call Predis\Client->connect() to avoid potential uncaught Predis\Connection\ConnectionException

• Initial release