FastCGI Cache Purge and Preload for Nginx

Yes, the plugin is completely free to use.

For users looking to efficiently manage Nginx cache Purge and Preload actions, this plugin provides a seamless solution for managing these processes directly from the WordPress admin dashboard.

No, this plugin does not introduce any performance overhead to your website. It operates exclusively within the WordPress admin environment and does not affect the frontend or public-facing aspects of your site.

Sure! Works 100% with all themes.

Sure! It works 100% with all plugins.

None.

When using NPP with other WordPress caching plugins, consider disabing their page caching features to avoid conflicts and redundancy. These plugins can still handle frontend optimizations. Keep frontend optimization features active, such as:

• Minify and combine CSS/JS files
• Lazy load images and videos
• Optimize the database
• Integrate a CDN This combined setup ensures NPP manages server-side caching while other plugins handle frontend tasks, avoiding conflicts and improving performance.

Navigate to Settings -> FastCGI Cache Purge and Preload in the WordPress admin dashboard or navigate to Admin Bar -> FastCGI Cache to configure the options and use the actions.

This wordpress plugin is compatible exclusively with Nginx web servers running on Linux-powered systems. Additionally, the shell_exec function must be enabled and unrestricted. Consequently, the plugin may not operate fully on shared hosting environments where native Linux commands are blocked from running via PHP. Moreover, granting the correct permissions to the PHP process owner (PHP-FPM-USER) is essential for the proper functioning of the purge and preload operations. This is necessary in isolated user environments that have two distinct user roles: the WEBSERVER-USER (nginx or www-data) and the PHP-FPM-USER. If you see warnings or if any plugin settings or tabs are disabled, this could indicate permission issues, an unsupported environment, or missing dependencies that the plugin requires to function properly.

For the preload action to work properly, the server must have the wget command installed, as the plugin uses it to preload the cache by fetching pages. Additionally, it is recommended to have the cpulimit command installed to effectively manage wget process server load during the preload action.

Permission errors when purging cache in Nginx environments are common, especially when the WEBSERVER-USER and PHP-FPM-USER have different permissions. This can restrict PHP-FPM-USER access to cache files. For detailed guidance on resolving this issue and automating tasks with a pre-made bash script, refer to the plugin settings Help tab or visit the plugin's main development repository.

The Nginx Cache Directory option has restrictions on the paths you can use to prevent accidental deletions or harm to critical system files. By default, certain paths, like '/home' and other vital system directories, are blocked to safeguard your system's stability and prevent data loss. While this might limit your options, it ensures your system's security. Allowed Cache Paths

• For RAM-based: Use directories under /dev/ | /tmp/ | /var/
• For persistent disk: Use directories under /opt/
• Important: Paths must be one level deeper (e.g. /var/cache).

Because NPP does not depend on external Nginx modules, It provides a simpler and more flexible solution. This plugin directly traverses the cache directory and deletes cache files If the PHP-FPM-USER (website-user or PHP process owner) has read and write permissions granted to the Nginx cache path. Note that, NPP also supports Nginx cache preloading with a simple direct approach, with the help of wget.

Yes, please refer to the plugin settings Help tab.