Changelog

#v1.25.1 - 2025-12-02

#Added

• Added optional analytics.persist_limit configuration option

#Changed

• Avoid timeouts when flushing with analytics.persist enabled
• Limit analytics persist size memory_limit / 2 by default
• Retry failed read commands on primary node before switching Sentinels
• Consider *WithMeta() calls read-only on replicated connections

#Fixed

• Disable cache if WP_SETUP_CONFIG is defined
• Fixed purging analytics measurements
• Fixed unit type of Relay “Memory” chart

#v1.25.0 - 2025-10-22

#Added

• Added API/CLI endpoints to reset slowlog and command statistics

#Changed

• Enable strict mode by default when a prefix is set
• Prevent integrity flush after cache was reset
• Removed transient deletion limit of 10k sites
• Loosen Relay prefix health check
• Replaced current_time('timestamp') with time()
• Avoid changing parameter names during inheritance

#Fixed

• Fixed accessing CONFIG on cluster connections
• Fixed accessing INFO COMMANDSTATS on old Redis versions
• Fixed selecting databases on persistent connections
• Fixed KeyDB detection
• Prevent diagnostics warning when WP_REDIS_DISABLED is enabled
• Hardened license health check against API outages

#v1.24.5 - 2025-08-21

#Fixed

• Fixed analytics charts not rendering under some conditions

#v1.24.4 - 2025-08-20

#Added

• Added objectcache_analytics_snapshot_measurements filter

#Changed

• Increased adaptive cache configuration defaults
• Support negative relay.adaptive.events values
• Switched all string diagnostics to Diagnostic objects
• Use #[SensitiveParameter] for strings that may contain passwords

#Fixed

• Reduce number of measurements fetched for metrics snapshot
• Fixed WP_REDIS_DISABLED not being respected in some places
• Prevent type error trying to format null metric values
• Prevent rare diagnostics error when not connected
• Prevent rare error when uninstalling plugin using WP CLI

#v1.24.3 - 2025-07-02

#Changed

• Support Relay’s new adaptive cache status property
• Support flushing Relay memory on clustered connections
• Disabled memory usage when scanning groups on clustered connections
• Improved SLOWLOG handling on clustered connections
• Send sanitized metrics snapshot

#Fixed

• Prevent error when running cron and using foreign object cache
• Prevent error when calling INFO and using older PhpRedis versions
• Fixed adaptive cache events and ratio configuration not taking effect
• Handle permission errors when running SLOWLOG|GET and MEMORY|USAGE

#v1.24.2 - 2025-06-20

#Added

• Added wp redis analytics-count CLI command

#Fixed

• Prevent excessive analytics snapshots

#v1.24.1 - 2025-06-17

#Fixed

• Prevent error when using ElastiCache Serverless instances
• Prevent unexpected token errors when scripts are inlined
• Prevent event listener registration when adaptive cache widget is missing
• Switched from ES11 to ES6 syntax
• Fixed groups scan API call if permalinks are disabled
• Fixed up some widget padding

#v1.24.0 - 2025-06-14

#Added

• Added experimental support for Relay’s adaptive cache
• Added health, slowlog and command statistics widgets
• Added queryttl configuration option (defaults to 24h)
• Support calculating memory using in groups widget
• Added groups, slowlog, commands and prune-queries CLI command
• Added objectcache_flushlog_limit filter

#Changed

• Prevent cache from being enabled if handshake fails
• Be more helpful when connection fails
• Improved diagnostics and various health checks
• Store cache analytics as plain JSON
• Don’t store path and hostname in analytics by default
• Check license gracefully when sleeping for 72+ hours
• Display latency in milliseconds (not microseconds)
• Sort results in groups widget
• Log getWithMeta() calls as GET
• Hide wp_cache_set_last_changed in Query Monitor stack
• Deprecated count property on objectcache/v1/groups endpoint
• Download cache groups as CSV instead of copying to clipboard
• Perform integrity flush if WordPress version changes
• Changed cache command log level from info to debug
• Omit logging cache commands in default ErrorLogLogger
• Include notice in default log levels

#Fixed

• Fixed Batcache compatibility issue
• Fixed Relay client access replicated and clustered connections

#v1.23.1 - 2025-03-17

#Changed

• Support disambiguating false return values using $found (PhpRedis 6.2; Relay 0.10.1)
• Show integrity flush reason in flush log widget
• Use unified base REST controller class
• Support calling FLUSHDB without ASYNC on Relay connections

#Fixed

• Fixed undefined array key access
• Fixed Dragonfly issues with Lua scripts
• Fixed strict types error when using ZRANGE

#v1.23.0 - 2025-03-13

#Added

• Added server type to diagnostics
• Added health checks for KEEPTTL requirements (Redis 6.0; PhpRedis 5.3)

#Changed

• Bump required PhpRedis version to 4.0.0
• Promote noeviction health check status to critical
• Exclude WooCommerce’s wc_cache_* group from prefetching
• Retry loading cache metadata with backoff
• Reduced blocking time when pruning analytics measurements
• Switch away from deprecated Redis commands
• Support discarding pipelines and transactions
• Reduced memory footprint of Connection::command()

#Fixed

• Prevent integrity flush when metadata can’t be loaded
• Preserve key TTL when (de|in)crementing numeric key
• Fixed resetting log levels when debug mode is disabled
• Prevent rare warnings in connectToSentinels()
• Avoid undefined key notices in RedisMetrics
• Avoid calling invalid calls to flushBlog()

#v1.22.0 - 2025-01-23

#Added

• Added full option for group_flush configuration option

#Changed

• Switch group_flush default value to scan
• Swap all error_log() call for internal log() helper
• Log all messages when debug mode is enabled
• Improve performance of analytics API requests

#Fixed

• Fixed rare TypeError in Diagnostics::redisVersion()
• Fixed scheme detection for wp redis cli command
• Fixed inverted multi/pipeline modes
• Fixed OpenTelemetry tracer integration
• Avoid cloning connection when computing metrics

#Removed

• Removed deprecated $RedisCachePro global

#v1.21.3 - 2024-10-29

#Changed

• Allow more cache key separators in Relay prefix health check

#Fixed

• Fixed changelog not being accessible when DISALLOW_FILE_MODS is set
• Avoid rare notice when using Query Monitor
• Removed debug call

#v1.21.2 - 2024-07-18

#Added

• Support setting strict mode using OBJECTCACHE_STRICT environment variable

#Changed

• Don’t enable strict mode when a prefix is set

#Fixed

• Fixed connection error when no Sentinel replicas are available

#v1.21.1 - 2024-05-21

#Fixed

• Fixed rare type mismatch when running admin lifecycle

#v1.21.0 - 2024-05-08

#Added

• Added Redis cluster support when using Relay
• Added ErrorLogContextLogger for easier debugging

#Changed

• Enabled strict mode by default
• Support WC_SESSION_CACHE_GROUP constant
• Use decorrelated jitter backoff algorithm for connection attempts
• Check wp_is_file_mod_allowed('object_cache_dropin') before automatically deleting drop-in
• Added Relay*Connection::keysInMemory() helpers
• Improved latency widget content when using cluster connection
• Use configured logger and log levels when logging from plugin itself
• Resolved PHP 8.4 deprecation notices

#Fixed

• Avoid rare fatal error in Configuration::safelyFrom()
• Fixed objectcache_allow_dropin_mod filter

#v1.20.2 - 2023-10-28

#Fixed

• Fixed plugin version string

#v1.20.1 - 2023-10-27

#Changed

• Log exception message when cache reset fails
• Don’t run filesystem health check if DISALLOW_FILE_MODS is true
• Changed filesystem test file name from .object-cache-test.tmp to object-cache.tmp

#Fixed

• Fixed async_flush when using PhpRedis v6.0
• Avoid TypeError when using WP_Error::get_error_data()

#v1.20.0 - 2023-09-19

#Added

• Added cache integrity protection
• Added analytics charts to dashboard widget
• Added objectcache_widget_metrics filter
• Added wp redis reset command
• Added support for OBJECTCACHE_OVERRIDE and OBJECTCACHE_MERGE constants
• Added support for PhpRedis v6.0
• Added analytics.sample_rate configuration option

#Changed

• Reduce default retries from 5 to 3
• Refresh nonce using X-WP-Nonce header
• Expose Relay license issues in Dashboard widget
• Refactored various flush mechanisms
• Expanded ObjectCache::withoutMutations() callback type from Closure to callable
• Delete objectcache_* site options when uninstalling
• Improved license API error handling

#Fixed

• Fixed failover when using Redis Sentinel
• Bump plugins_api priority to prevent plugins from hijacking responses
• Mute rare undefined array key notice in flushBacktraceSummary()

#Removed

• Removed split_the_query filter in favor of native WordPress 6.4 behavior
• Removed deprecated rediscache_* filters
• Removed deprecated ObjectCache::flushMemory() method
• Removed objectcache_analytics_retention filter
• Removed --async option from wp redis flush

#v1.19.0 - 2023-07-21

#Added

• Added strict configuration option
• Added group flush log widget
• Added link to settings to dashboard widget
• Added Relay memory health check
• Added support for OBJECTCACHE_PREFER_RELAY environment variable
• Added support for path and socket configuration options
• Added support for redis-error.php template
• Added objectcache_cleanup_transients filter
• Added --skip-transients option to wp redis enable

#Changed

• Render connection exceptions similar to WordPress database errors
• Throw exception when selecting non-existent database
• Delete all transients from database after enabling cache
• Support logging early flushes before plugin code was initialized
• Improved WP_Query::get_posts() performance using split_the_query
• Made Relay diagnostics more helpful
• Renamed relay-memory-active to relay-memory-used
• Not longer recommend disabling prefetch and split_alloptions when using Relay

#Fixed

• Display Relay’s memory consumption more accurately
• Improve handling non-fatal MGET failures
• Prevent wp_cache_init() initializing twice
• Avoid rare fatal error when parsing JSON responses
• Avoid confusing hiredis error message Relay connection times out
• Avoid fatal error when gmt_offset is not valid

#v1.18.2 - 2023-04-04

#Added

• Added Query Monitor constants to panel

#Changed

• Renamed ms-cache-median to ms-cache-avg

#Fixed

• Discard transactions if they fail
• Prevent REST API responses from being cached
• Fixed measuring analytics writes
• Fixed storeWaitAverage calculation
• Fixed supported Redis version indicator when using Relay

#v1.18.1 - 2023-03-24

#Changed

• Updated End-User License Agreement
• Don’t flush cache when updating drop-in

#Fixed

• Fixed cache timing metric
• Fixed widget flush button label on multisite
• Fixed flushing groups that end with blog id on multisite

#v1.18.0 - 2023-02-20

#Added

• Added wp redis flush-group CLI command

#Changed

• Reduced overall memory usage
• Made cache key generation slightly faster
• Enable flush logging by default
• Log warning level by default
• Execute not split alloptions reads on primary node
• Refactored object cache metrics to use new ObjectCacheMetrics
• Enabled flush logging when save_commands is set
• Disabled command logging entirely unless save_commands is set
• Return primary node from *SentinelsConnection::client() instead of sentinel client

#Fixed

• Handle foreign keys without a group in groups REST API endpoint
• Respect async_flush when using wp_cache_delete()

#Removed

• Dropped support for Query Monitor <=3.8.0 backtraces
• Removed metrics keys from info() in favor of metrics()
• Removed backtrace_summary logging and deprecated BacktraceLogger

#v1.17.1 - 2023-01-29

#Changed

• Switched to faster Zstandard compression level
• Handle non int|string cache keys stricter and more gracefully
• Throw exception for invalid cache keys when debug option is enabled
• Don’t let the perflab plugin hijack the object cache drop-in
• Defer registering wp redis CLI command

#Fixed

• Fixed several multisite blog flushing issues
• Fixed accessing client on replicated connections
• Fixed setting analytics option to boolean
• Fixed calling get_plugin_data() on non-existent drop-in

#v1.17.0 - 2022-11-23

#Added

• Added support replicated and sentinel Relay connections
• Added group_flush configuration option supporting keys (new faster default), scan (previous default) and incremental (enormous datasets)
• Added tracer configuration option supporting new-relic and global open-telemetry tracer providers
• Support network_flush option when using Redis Cluster
• Support New Relic tracing for Redis Cluster, Redis Sentinel and Relay clients
• Added *Connection::listKeys() helpers
• Added PhpRedisClusterConnection::eval*() helpers
• Added Redis Server version health checks and indicators

#Changed

• Bumped scan and batch removal from 100 to 500 keys
• Flush more prudently even on main site when using network_flush
• Indicate whether the network or site will be flushed in overview widget in multisite environments
• Renamed all the things from master(s) to primary/primaries with backwards compatibility
• Improved must-use plugin detection
• ⚠️ Added client() method to ConnectionInterface
• ⚠️ Use new ClientInterface in all ConnectionInterface implementations
• ⚠️ Renamed Connector interface to ConnectorInterface
• ⚠️ Renamed handleBlogFlush() to shouldFlushBlog()
• Renamed flush_network option to network_flush
• Use ObjectCache::$blogId instead of get_current_blog_id()
• Use ObjectCacheCollector::get_storage(): QM_Data return type
• Show received bytes and sent bytes in Query Monitor
• Strip slashes from commands in Query Monitor
• Improved support for scan() and *scan() methods
• Delete FOSS drop-in upon plugin activation

#Fixed

• Fixed various Redis Sentinel issues
• Fixed Invalid regular expression in Safari
• Fixed parsing rawCommand() in Query Monitor calls when using Redis Cluster
• Fixed health check for configuration constant being defined too late
• Fixed attempted property access on null in Diagnostics::relayHasCache()
• Fixed groups widget padding
• Fixed inverted “Relay Cache” metadata in Query Monitor

#Removed

• Dropped Twemproxy support
• Dropped PhpRedisClusterConnection::scanNode() helper
• Dropped *ObjectCache::Client constants
• Dropped WP_REDIS_PHPREDIS_OPTIONS constant

#v1.16.4 - 2022-10-31

#Added

• Added support for WordPress 6.1’s wp_cache_supports()

#Changed

• Refer to “external cache” as “datastore” everywhere
• Hide wp_cache_get_last_changed() and wp_cache_flush_group() in Query Monitor

#Fixed

• Fixed inverted “Relay Cache” diagnostic
• Fixed rare undefined OPT_MAX_RETRIES constant error
• Don’t use WordPress 5.3’s WP_REST_Request::has_param()

#v1.16.3 - 2022-10-09

#Added

• Added new wp redis status command
• Added objectcache_omit_settings_pointer filter
• Added relay.cache configuration option

#Changed

• Improved support for Relay’s “client only” mode
• Renamed wp redis info to wp redis diagnostics
• Made wp redis info an alias of wp redis status
• Refined hosting provider detection
• Use new Connection::$class property for FQCNs

#Fixed

• Fixed rare fatal ValueError

#Removed

• Removed no longer needed Relay::dispatchEvents() calls

#v1.16.2 - 2022-09-29

#Added

• Added support for Relay’s “client only” mode
• Added compatibility with new Query Monitor data classes
• Added objectcache_allow_dropin_mod filter
• Added relay.allowed and relay.ignored configuration options

#Changed

• Append context to objectcache_*_error errors
• Verify Transaction result type and count
• Make it easy to copy all cache groups to the clipboard
• Refined API health check and diagnostics
• Refined overview widget
• Refined analytics charts loading and messages
• Refined hosting provider detection

#Fixed

• Avoid executing empty transactions
• Fixed update channel field availability
• Fixed Query Monitor request time ratio calculation
• Fixed rare Query Monitor issue when connection is null
• Hide more update notices when updates is false
• Don’t inline widget CSS twice

#v1.16.1 - 2022-08-29

#Fixed

• Fixed health check condition

#v1.16.0 - 2022-08-22

#Added

• Added WordPress 6.1 wp_cache_flush_group() support
• Added REST API endpoint for plugin options
• Added objectcache_omit_analytics_footnote filter
• Added connection retries
• Added support for OBJECTCACHE_CONFIG environment variable
• Added integration for WP User Manager
• Added withTimeout() and withoutTimeout() connection helpers

#Changed

• Pass PHPStan L7
• ⚠️ Made Plugin, Configuration and Transaction classes final
• ⚠️ Added MeasuredObjectCacheInterface
• ⚠️ Added commands(), memoize(), ioWait() and withoutMutations() to ConnectionInterface
• Reduced default (read-)timeout from 5.0s to 2.5s
• Reduced default retry interval from 100ms to 25ms
• Use retry_interval configuration option as backoff base
• Use read_timeout configuration option as backoff cap
• Use option API endpoint to save various settings
• Append backtrace to invalid cache key type log message
• Overhauled flush_runtime() and flushRuntime() methods
• Default to default group in ObjectCache helpers
• Accept any callable for logger configuration option
• Catch callback exceptions in PhpRedisConnection::withoutMutations()
• Improved retry/backoff support for Relay connections
• Support Relay event listeners for WordPress 6.0 *_multiple() methods
• Renamed default backoff to smart
• Only calculate cache size when needed and do so more memory-friendly

#Fixed

• Fixed handling invalid cache keys
• Fixed loading of settings styles when must-use is symlinked elsewhere
• Fixed dashboard widget positioning
• Relaxed URL validation
• Avoid timeouts when deleting by pattern
• Avoid rare key identifier collisions
• Prevent rare analytics restore failure
• Fixed up PhpRedisReplicatedConnection logic for multi() and flushdb() calls
• Import missing exception in Configuration\Concerns\Sentinel trait
• Fixed return value of Updates::setUpPluginInfo() when error occurred
• Drop mixed type in PhpRedisClusterConnection::scanNode()
• Prevent loading plugin more than once
• Don’t hijack action parameter on dashboards

#v1.15.2 - 2022-06-30

#Added

• Added SQL queries metric

#Fixed

• Don’t require ext-redis when running Relay transactions
• Only hide upgrade notice in must-use setups
• Tweak widget latency warning color
• Fixed rare error of get_num_queries() not being available

#v1.15.1 - 2022-06-19

#Added

• Show basename in diagnostics

#Changed

• Add Redis and Relay samples to analytics footnote
• Narrow type hint to Transaction in PhpRedisConnection::executeMulti()

#Fixed

• Handle PHP 7.0/7.1 environments gracefully
• Show error when using bad plugin slug
• Don’t render analytics when not connected
• Avoid rare undefined index when not connected in Query Monitor
• Catch all Throwable errors in ObjectCache::error(), not only exceptions

#v1.15.0 - 2022-06-10

This releases introduces a settings page to keep an eye on cache analytics, manage plugin updates and use diagnostic tools.

#Added

• Added analytics charts under Settings > Object Cache
• Added plugin updates under Settings > Object Cache -> Updates
• Added various tools under Settings > Object Cache -> Tools
• Added WordPress 6.0’s wp_cache_*_multiple() and wp_cache_flush_runtime() functions
• Added support for Redis Sentinel
• Hijack all transactions to allow command logging
• Added X-Redirect-By for all redirects
• Added analytics, sentinels, service and relay.invalidations configuration options
• Added REST API endpoint for analytics, cache groups and latency
• Added master() and replicas() to PhpRedisReplicatedConnection
• Added nodes() to PhpRedisClusterConnection
• Added updates configuration option
• Added wp redis analytics CLI command that mimics REST API endpoint

#Changed

• ⚠️ Require PHP 7.2+
• ⚠️ Require Relay v0.4.0
• ⚠️ Added flush_runtime() to ObjectCacheInterface
• ⚠️ Added add_multiple(), set_multiple() and delete_multiple() to ObjectCacheInterface
• ⚠️ Added connectToSentinels() and connectToReplicatedServers() ConnectionInterface
• Use group name as hash slot on cluster connections
• Deprecated flushMemory() in favor of flushRuntime() for naming consistency
• Redirect to settings after activation
• Allow analytics to be restored after cache flushes
• Only accept integers and non-empty strings as key names
• Dropped string type for $key in several ObjectCacheInterface methods
• Hide misleading Relay statistics in wp redis info
• Reverted: Store alloptions as individual keys when using Relay
• Increased Batcache compatibility
• Disabled flush_network option when using Redis cluster
• Marked PhpRedis v5.3.4 and older as outdated
• Catch Throwable everywhere, not Exception
• Use a single window.objectcache object
• Highlight expensive commands in Query Monitor
• Be more helpful about missing command logs in Query Monitor

#Fixed

• Fixed rare error when enabling drop-in
• Block wp redis enable when WP_REDIS_CONFIG is not set
• Fixed instantiating configuration without valid client extension present
• Avoid fatal error in CommandsCollector when no connection is established
• Show rawCommand() calls as actual commands in Query Monitor
• Various other bug fixes small additions and improvements
• Fixed selecting non-zero databases in wp redis cli
• Fixed rare rendering issue with wp redis watch digest
• Fixed normalization of IDNs
• Don’t request filesystem write access to check for drop-in existence
• Fixed rare bug when flushing specific site via wp redis flush 1337

#Security

• Prevent risky plugin auto-updates
• Prevent plugin upgrades when using version control

#v1.14.5 - 2022-03-22

#Added

• Store alloptions as individual keys when using Relay
• Added health check for Relay configuration
• Added Plugin::config() helper method

#Changed

• Bump Relay requirement to v0.3.0
• Sped up ObjectCache::id() lookups by caching prefix
• Sped up alloptions hash deletion when using async_flush
• ⚠️ Renamed SplitsAllOptions trait to SplitsAllOptionsIntoHash

#Fixed

• Fixed support of older Query Monitor versions
• Added missing retries and backoff to diagnostics
• Avoid rare error in Connection::ioWait()
• Avoid rare TypeError in Diagnostics
• Avoid rare error in Query Monitor when no connection is present

#v1.14.4 - 2022-02-03

#Added

• Introduced ObjectCache::Client and ObjectCache::clientName()

#Changed

• Use QM_VERSION to detect Query Monitor version
• Convert logged commands names to uppercase
• Avoid log spam when calling Relay’s socketId(), socketKey() or license()
• Make isMustUse() and usingVCS() helpers static
• Ignore all connection methods in Query Monitor backtraces
• Use new qm/component_type/unknown filter to set component type

#Fixed

• Avoid warnings when displaying rare commands in Query Monitor

#v1.14.3 - 2021-12-30

#Added

• Added file header health checks
• Use Query Monitor backtraces and components when available
• Added integrations for several user role editors
• Detect must-use installations and VCS checkouts
• Respect WP_REDIS_UPDATES_DISABLED constant and environment variable
• Added Plugin::Capability constant
• Added Plugin::$directory variable

#Changed

• Use REQUEST_TIME_FLOAT when available for improved accuracy
• Improve handling when WP_REDIS_CONFIG is set too late
• Use current_screen action to register dashboard widgets
• Use wp_add_inline_style() for widget styles

#Fixed

• Replaced non-functional capability checks using map_meta_cap with user_has_cap filter
• Restored plugin meta links
• Restored mu-plugin and drop-in update notices
• Disable update button in must-use setups
• Corrected value used for total Relay memory
• Avoid warning in Diagnostics when WP_REDIS_CONFIG is not set

#v1.14.2 - 2021-12-12

#Added

• Added objectcache_dashboard_widget filter
• Added objectcache_network_dashboard_widget filter
• Added backoff and retries configuration options
• Added pre_objectcache_flush filter to short-circuit the flushing
• Safeguard against update confusion attacks using Update URI plugin header
• Added shared configuration option to show key count instead of database size in shared environment

#Changed

• Use decorrelated jitter backoff algorithm by default for all connections
• Append analytics comment to all XML feeds
• Show license state in Query Monitor and diagnostics
• Collect Relay key counts in metrics
• Bump Relay requirement to v0.2.2
• Memorize Relay::stats() calls

#Fixed

• Several PHP 8.1 compatibility fixes

#v1.14.1 - 2021-10-26

#Fixed

• Fixed invalid nonce errors

#Removed

• Removed unnecessary phpversion() and setOption() calls in RelayConnector

#v1.14.0 - 2021-10-26

⚠️ This release contains minor breaking changes.

#Added

• ⚠️ Added Connector::supports() method
• ⚠️ Added ObjectCacheInterface::boot() method
• Added Twemproxy support
• Added ObjectCache::metrics() method
• Added Connection::ioWait() method
• Added Plugin::flush() helper
• Added several Diagnostic helper methods
• Display Relay cache size in dashboard widget
• Track reads, writes, hits and misses counts
• Added cluster support to wp redis cli
• Allow clusters to be flushed asynchronously
• Added backbone for analytics and wp redis watch command with 3 watcher types
• Added environment type and host to all diagnostics

#Changed

• ⚠️ Changed dashboard widget identifier to dashboard_objectcache
• Deprecated $GLOBALS['RedisCachePro'], use to $GLOBALS['ObjectCachePro'] instead
• Deprecated rediscache_manage capability, use to objectcache_manage instead
• Deprecated rediscache_validate_dropin filter, use objectcache_validate_dropin instead
• Deprecated rediscache_validate_dropin_version filter, use objectcache_validate_dropin_version instead
• Deprecated rediscache_check_filesystem filter, use objectcache_check_filesystem instead
• Trigger E_USER_WARNING instead of E_USER_NOTICE in ObjectCache::__get()
• Always use asynchronous flushing with Relay
• Flush the cache when calling wp redis enable and wp redis disable, unless --skip-flush is passed
• Don’t EXPIRE the alloptions hash map
• Memorize PING and INFO results when feasible
• Register shutdown function to close cache in wp_cache_init()
• Store prefetches when closing cache
• Only log incompatible key prefetch warnings in debug mode
• Show extended metrics in Query Monitor panel
• Simplified Debug Bar integration
• Moved CLI commands into Console namespace
• Boot connector when setting client in the configuration, not in wp_cache_init()
• Improved error messages when checking of compression/serializer in configuration
• Use SPL autoload function in bootstrap.php
• Increased priority of dashboard widget
• Set default timeout and read_timeout to 5 seconds
• Set default retry_interval to 100 milliseconds
• Always verify invalid licenses when running health checks
• Bumped the HTTP timeout for license health checks to 15 seconds
• Invalidate drop-in file opcode when disabling the cache
• Cache get_plugin_data() calls to improve performance
• Flush the cache when enabling/disabling the drop-in via dashboard widget and when deactivating the plugin
• Support must-use Query Monitor setups
• Bumped prefix limit to 32 characters

#Fixed

• Speed up API health check
• Fixed some rare PHP notices
• Fixed fatal error when using url option without password
• Prevent unnecessary config calls in RelayObjectCache
• Support object-cache-pro.php basename setups
• Fix PHP 7.1 and older compatibility in License

#Removed

• Removed unnecessary confirm dialogs from dashboard widget action

#v1.13.3 - 2021-06-08

#Added

• Support passing function names to logger configuration option

#Changed

• Improved Relay integration and support
• Improved unsupported compression and serializer error messages
• Renamed more things to “Object Cache Pro”

#Fixed

• Support url options without usernames
• Ensure wp_debug_backtrace_summary() is loaded to increase Batcache compatibility

#Security

• Hide passwords in url from diagnostics

#v1.13.2 - 2021-04-29

#Added

• Added relay_listeners configuration option
• Added a BacktraceLogger logger for easy debugging
• Added wildcard support in non-prefetchable group names

#Changed

• Split up setMutationOptions() methods

#Fixed

• Fixed flushing clusters when using a TLS connection

#v1.13.1 - 2021-04-14

#Changed

• Disable prefetching for CLI and API requests
• Added userlogins and wc_session_id to non-prefetchable groups
• Prevent even more __PHP_Incomplete_Class errors when using prefetching

#Fixed

• Fixed type error in PrefetchesKeys

#v1.13.0 - 2021-04-12

#Added

• Added support for Relay
• Added client configuration option
• Added tls_options configuration option
• Added ObjectCache::withoutMutations() helper
• Added PrefetchesKeys::deletePrefetches() helper
• Added info log lines to wp_cache_init()
• Added wildcard support in non-persistent group names
• Show command count and argument class names in Query Monitor

#Changed

• Respect debug configuration option in wp_cache_init()
• Added Connector::boot(): void interface method
• Deprecated WP_REDIS_PHPREDIS_OPTIONS constant
• Renamed several internal exceptions
• Access fully qualified constants
• Expect PhpRedisConnection in PhpRedisObjectCache constructor
• Use high resolution time when available
• Increased command time decimals from 2 to 4
• Refactored license code to be more graceful
• Prevent __PHP_Incomplete_Class errors when using prefetching

#Fixed

• Fixed flushing networks when using the site or global option
• Fixed preloading in multisite environments
• Fixed prefetches count discrepancies

#v1.12.0 - 2020-12-23

#Added

• Improved PHP 8 compatibility
• Added support for Batcache
• Support flagging groups as non-prefetchable
• Added ObjectCache::deleteFromMemory(string $key, string $group) method
• Added ObjectCache::flushMemory() in favor of ObjectCache::flushRuntimeCache()
• Added rediscache_validate_dropin filter
• Added rediscache_validate_dropin_version filter

#Changed

• Support loading the object cache as early as advanced-cache.php
• Changed default value of cluster_failover to error to improve stability
• Refactored flushBlog(int $siteId, string $flush_network = null) method
• Check wp_is_file_mod_allowed('object_cache_dropin') before automatically updating drop-in
• Marked PHP 7.3 as outdated

#Fixed

• Prevent another rare undefined variable notice in wp_cache_init()
• Resolve incompatibility with Query Monitor 3.6.5
• Updated some links to the documentation

#v1.11.1 - 2020-11-11

#Changed

• Only preload groups with at least two keys

#Fixed

• Convert integer group names to strings

#v1.11.0 - 2020-11-11

#Added

• Added prefetching 🚀
• Added ObjectCache::flushRuntimeCache() method
• Added PhpRedisConnection::withoutMutations() method
• Added support for Query Monitor’s new backtraces

#Changed

• Improved memory usage display in widget
• Speed up command execution when using replication
• Improved parameter formatting in Query Monitor
• Attach backtrace as array along with backtrace summary to log messages
• Moved runtime cache helpers from to ObjectCache class

#Fixed

• Fixed updating split alloptions hash options with equivalent values
• Send alloptions hash read commands to the master when using replication
• Prevent rare undefined variable notice in wp_cache_init()

#v1.10.2 - 2020-09-28

#Added

• Overload generic cache_hits and cache_misses properties

#Changed

• Always return a Configuration from Configuration::safelyFrom()
• Use invalid configuration option name (not method name) in error log message

#Fixed

• Use key caching in multisite environments
• Added suffix to MU and Drop-in stubs to avoid invalid plugin header error when activating

#v1.10.1 - 2020-09-16

#Fixed

• Fixed an issue with non-persistent, numeric keys in get_multiple()

#v1.10.0 - 2020-09-15

#Added

• Show connection class in Query Monitor
• Added Configuration::parseUrl() helper
• Added support for replicated connections
• Show configuration instantiation errors in widget and site health

#Changed

• Moved RedisCachePro\Config class to RedisCachePro\Configuration\Configuration
• Renamed slave_failover configuration option to cluster_failover ✊🏿
• Extracted cluster related configuration into RedisCachePro\Configuration\Concerns\Cluster
• Trim log messages to 400 characters in Debug Bar log
• Throw RedisConfigValueException for invalid configuration values instead of RedisConfigException

#Fixed

• Create a proper configuration object when cache instantiation fails
• Escape command parameters in Query Monitor extension
• Moved Redis related information from ObjectCache::info() to PhpRedisObjectCache::info()
• Always strip unix:// from PhpRedis host parameter
• Ensure PhpRedisObjectCache::info()->status returns a boolean
• Prevent invalid configuration values from booting plugin

#v1.9.2 - 2020-08-29

#Added

• Look for object-cache-pro directory in must-use stub

#Fixed

• Fixed host scheme in PhpRedis 5.0.2 and older

#v1.9.1 - 2020-08-26

#Added

• Added wp_cache_remember() and wp_cache_sear() functions

#Changed

• Pointed all URLs to the new domain objectcache.pro
• Change log prefix from rediscache to objectcache
• Slightly sped up API loading in object cache drop-in

#Fixed

• Only throw exception in mu-plugin and drop-in when WP_DEBUG is true

#v1.9.0 - 2020-08-15

#Added

• Added url configuration option
• Added scheme configuration option
• Added support for options parameter added in PhpRedis 5.3
• Added support for LZ4 compression (PhpRedis 5.3+)

#Changed

• Support connecting to sockets and using TLS in wp redis cli
• Convert host configuration option to lowercase
• Set scheme when included in host configuration option

#Fixed

• Fixed getting multiple numeric keys in ArrayObjectCache
• Fixed setting port, database, maxttl and retry_interval as numeric string

#v1.8.2 - 2020-08-11

#Changed

• Reverted eager plugin name change in v1.8.1
• Updated plugin URL to new domain to avoid redirects

#Fixed

• Don’t flag dropin as invalid when it’s just outdated

#v1.8.1 - 2020-08-11

#Changed

• Look for API in object-cache-pro directories

#Fixed

• Fixed an issue with numeric keys and improved error handling in get_multiple()

#v1.8.0 - 2020-07-23

#Added

• Added username configuration option for Redis 6 ACL support
• Added cache configuration option to set a custom object cache class
• Added connector configuration option to set a custom connector class
• Added flush_network configuration option (defaults to all)
• Support flushing individual sites via Network Admin > Sites
• Added --skip-flush-notice option to wp redis enable command
• Added health check to ensure asynchronous flushing is supported
• Added health check to ensure drop-in can be managed
• Added intuitive alias for all WP CLI commands
• Added support for wp_cache_get_multiple() introduced in WP 5.5

#Changed

• Renamed “Dropin” to “Drop-in” everywhere
• Support flushing individual sites using wp redis flush
• Hide Redis memory from dashboard widget in multisite environments
• Display notice when license token is not set or invalid, as well as when the license is unpaid or canceled

#Fixed

• Explicitly set permissions of object-cache.php to FS_CHMOD_FILE

#v1.7.3 - 2020-07-10

#Fixed

• Support older versions of Query Monitor
• Ignore HTTP errors for license verification requests
• Prevent undefined index notice in ObjectCache::info()
• Prevent call to undefined function in Licensing::telemetry()

#v1.7.2 - 2020-07-09

#Added

• Use wp_opcache_invalidate() on dropin
• Refactored Diagnostics to use Diagnostic objects

#Changed

• Minor dashboard widget improvements
• Minor QueryMonitor extension improvements
• Cleanup plugin options upon deactivation
• Disable free version when activating plugin to avoid confusion

#Fixed

• Escape more HTML outputs
• Prevent unnecessary license verification requests

#v1.7.1 - 2020-06-08

#Fixed

• Always send setOption() values as string
• Fixed Query Monitor panels not showing up for some setups
• Fixed ArrayObjectCache fallback instantiation in wp_cache_init()
• Format all commands parameters using json_encode() in Query Monitor panel

#v1.7.0 - 2020-05-30

#Added

• Added support for Query Monitor
• Added context to license issues in the dashboard widget
• Show updates for must-use plugin and object cache dropin

#Changed

• Improved formatting of config values in diagnostics
• Don’t highlight noeviction policy when maxTTL is set

#Fixed

• Prevent unnecessary plugin update requests

#v1.6.0 - 2020-05-11

#Added

• Support PHP 7.0 and PhpRedis 3.1.1
• Indicate missing license token in dashboard widget

#Changed

• Switched to WP_CLI\Utils\proc_open_compat() for wp redis cli
• Ping Redis during object cache initialization to catch LOADING errors

#Fixed

• Fixed potential TypeError during upgrader_process_complete action

#v1.5.1 - 2020-04-29

#Fixed

• Fixed global group cache keys

#Security

• Prevent XSS injection using cache group names when using Debug Bar

#v1.5.0 - 2020-04-22

#Added

• Added Requires PHP and Network to plugin header fields
• Show supported compression formats in site health

#Changed

• Initialize plugin after all plugins have been loaded
• Improved the plugin version and basename detection
• Improved muting the wp redis cli auth warning
• Don’t require setting port when connecting to a unix socket
• Validate config connection information before connecting
• Always inline widget styles (1015 bytes)
• Always inject plugin details into update_plugins transient
• Improved obfuscation of sensitive values
• Hide health link from plugin actions in WP <5.2 and multisite networks
• Prevent widget color clashing with color scheme

#Fixed

• Fixed detection of multisite networks
• Fixed setting global and non-persistent groups
• Fixed notices in Debug Bar extension
• Fixed INFO command when using cluster

#Removed

• Removed wp_clear_scheduled_hook for rediscache_report

#v1.4.0 - 2020-02-27

#Added

• Added support for storing alloptions key as hash
• Added wp redis cli command to spawn redis-cli process with configuration
• Support WP_REDIS_DIR constant in mu-plugin.php stub

#Changed

• Ensure object cache dropin is valid before flushing via CLI
• Colorized wp redis flush errors

#Fixed

• Fixed typo in RedisConfigMissingException
• Fixed logs missing from Debug Bar
• Fixed cloning logic in PhpRedisObjectCache::storeInMemory()
• Inline styles when plugin is symlinked or located outside of web root

#v1.3.0 - 2020-02-06

#Added

• Added support for asynchronous flushing
• Added support for data compression using lzf and zstd
• Added network admin dashboard widget
• Added wp redis flush command with support for --async flag
• Automatically update dropin after plugin update
• Show used and max memory in widget, site health and Debug Bar

#Changed

• Switched to using ErrorLogLogger by default
• The ArrayLogger now extends ErrorLogLogger and vice versa
• The log levels now default to ['emergency', 'alert', 'critical', 'error']
• Changed log level of ObjectCache::error() from critical to error
• Introduced PhpRedisMissingException and PhpRedisOutdatedException
• Attempt direct filesystem access when WP filesystem initialization fails
• Renamed internal cache methods in PhpRedisObjectCache to be more descriptive
• Capture more errors by using Throwable in some places
• Moved Debug Bar HTML into template files
• Support setting log_levels configuration option to null

#Removed

• Support setting token and password to null
• Removed captured errors from site health information

#v1.2.1 - 2020-01-20

#Added

• Added health checks link to plugin actions

#Changed

• Made initialization exceptions more helpful
• Escape HTML in Debug Bar log messages
• Improved pinging cluster nodes

#Fixed

• Fixed duplicate prefix when using cluster
• Fixed undefined index notices in Licensing
• Fixed a issue when loading widget styles as must-use plugin
• Resolved minor spelling mistakes

#v1.2.0 - 2019-11-29

#Added

• Added dashboard widget
• Added support for automatic WordPress updates
• Added diagnostic tests and information to Tools > Site Health
• Added token configuration option to set license token

#Changed

• Disable object cache when deactivating/uninstalling the plugin

#Fixed

• Fixed DebugBar integration on case-sensitive filesystems

#v1.1.0 - 2019-11-19

#Added

• Added log levels
• Added WP_REDIS_DISABLED environment variable

#Changed

• Use PhpRedisConnection for each master when flushing clusters
• Obfuscate all non-null passwords in diagnostics
• Allow password to be null for more convenient fallbacks

#Fixed

• Prevent timeouts when flushing database
• Use inline styles to clear floats in Debug Bar panels

#Security

• Obfuscate password in constants section of diagnostics

#v1.0.0 - 2019-11-01

• Initial stable release