Version 0.3.0

• 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.

Version 0.2.2

• 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.

Version 0.2.1

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

Version 0.2.0

• 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.