WP OPcache is a free WordPress utility designed to enhance website performance through effective OPcache management. This plugin adds a button to the admin bar for easy flushing of OPcache, allowing users to invalidate individual or bulk files specifically within the WordPress absolute path. It supports both memory and file caching, making it suitable for various hosting environments, including multisite setups. The integration with WP CLI enables users to flush the cache directly from the command line, enhancing flexibility for advanced users.

The plugin features a comprehensive admin dashboard with three main tabs under the Tools section. The General Settings tab allows for easy configuration of plugin options, while the Statistics tab offers detailed insights into OPcache performance metrics such as memory usage, hits, and cached files. The Cached Files tab provides a list of all cached files, with options for invalidation. Overall, WP OPcache is a valuable tool for optimizing WordPress site performance.