Plugin / WP Redis

Changelog

0.7.1 (December 14, 2018)

• Better support in wp_cache_init() for drop-ins like LudicrousDB [#231].
• Cleans up PHPCS issues.

0.7.0 (August 22, 2017)

• Adds filterable connection methods to permit use of Predis. See humanmade/wp-redis-predis-client for more details.

0.6.2 (June 5, 2017)

• Bug fix: Preserves null values in internal cache.
• Bug fix: Converts numeric values to their true type when getting.

0.6.1 (February 23, 2017)

• Bug fix: correctly passes an empty password to redis-cli.
• Variety of improvements to the test suite.

0.6.0 (September 21, 2016)

• Introduces three new WP-CLI commands: wp redis debug to display cache hit/miss ratio for any URL; wp redis info to display high-level Redis statistics; wp redis enable to create the object-cache.php symlink.
• Permits a Redis database to be defined with $redis_server['database'].
• Introduces wp_cache_add_redis_hash_groups(), which permits registering specific groups to use Redis hashes, and is more precise than our existing WP_REDIS_USE_CACHE_GROUPS constant.

0.5.0 (April 27, 2016)

• Performance boost! Removes redundant exists call from wp_cache_get(), which easily halves the number of Redis calls.
• Uses add_action() and $wpdb in a safer manner for compatibility with Batcache, which loads the object cache before aforementioned APIs are available.
• For debugging purposes, tracks number of calls to Redis, and includes breakdown of call types.
• Adds a slew of more explicit test coverage against existing features.
• For consistency with the actual Redis call, calls del instead of delete.
• Bug fix: If a group isn’t persistent, don’t ever make an exists call against Redis.

0.4.0 (March 23, 2016)

• Introduces wp redis-cli, a WP-CLI command to launch redis-cli with WordPress’ Redis credentials.
• Bug fix: Ensures fail back mechanism works as expected on multisite, by writing to sitemeta table instead of the active site’s options table.
• Bug fix: Uses ‘default’ as the default cache group, mirroring WordPress core, such that $wp_object_cache->add( 'foo', 'bar' ) === wp_cache_add( 'foo', 'bar' ).

0.3.0 (February 11, 2016)

• Introduces opt-in support for Redis cache groups. Enable with define( 'WP_REDIS_USE_CACHE_GROUPS', true );. When enabled, WP Redis persists cache groups in a structured manner, instead of hashing the cache key and group together.
• Uses PHP_CodeSniffer and WordPress Coding Standards sniffs to ensure WP Redis adheres to WordPress coding standards.
• Bug fix: Permits use of a Unix socket in $redis_server['host'] by ensuring the supplied $port is null.

0.2.2 (November 24, 2015)

• Bug fix: use INSERT IGNORE INTO instead of INSERT INTO to prevent SQL errors when two concurrent processes attempt to write failback flag at the same time.
• Bug fix: use E_USER_WARNING with trigger_error().
• Bug fix: catch Exceptions thrown during authentication to permit failing back to internal object cache.

0.2.1 (November 17, 2015)

• Bug fix: prevent SQL error when $wpdb->options isn’t yet initialized on multisite.

0.2.0 (November 17, 2015)

• Gracefully fails back to the WordPress object cache when Redis is unavailable or intermittent. Previously, WP Redis would hard fatal.
• Triggers a PHP error if Redis goes away mid-request, for you to monitor in your logs. Attempts one reconnect based on specific error messages.
• Forces a flushAll on Redis when Redis comes back after failing. This behavior can be disabled with the WP_REDIS_DISABLE_FAILBACK_FLUSH constant.
• Show an admin notice when Redis is unavailable but is expected to be.

0.1

• Initial commit of working code for the benefit of all.