gistfile1.txt

<?php
/**
 * Plugin Name: Empty Embeds cache
 * Description: You already read it
 * Version:     1.0
 * Author:      Julio Potier
 * Author URI:  https://wp-rocket.me    
 * License:     GPLv2+
 *
 */
 
 add_action( 'plugins_loaded', 'empty_embed_cache' );
 function empty_embed_cache() {
 	global $wpdb;
	$wpdb->query( 'DELETE from ' . $wpdb->postmeta . ' WHERE meta_key LIKE "_oembed_%"' );
	wp_die( 'Cache emptied, please now remove this file : <b>' . __FILE__ . '</b>' );
 }