2.4.0 (2023-05-04)

• Flush cache when toggling the object cache
• Show a custom error message when Redis is unreachable
• Don't allow object cache to be enabled when Redis is unreachable
• Deprecated risky WP_REDIS_SERIALIZER configuration constant, use WP_REDIS_IGBINARY instead
• Support WP_REDIS_USERNAME when using Predis
• Show cache hit ratio decimal points in Admin Bar node
• Obscure secrets when displaying WP_REDIS_SERVERS
• Improved CloudLinux's Accelerate WP compatibility
• Admin bar cache flush now uses AJAX