Varnish Extended

Extends Varnish HTTP Purge to purge the cache on multiple backends.

Installation

1. Install the plugin.
2. Define VARNISH_BACKENDS in your wp-config.php file. Example: define( 'VARNISH_BACKENDS', [ '127.0.0.1:6081', '127.0.0.2:6081' ] );. Or use the varnish_extended.varnish_backends filter.