WP_Site_Health::available_object_cache_services()

	private function available_object_cache_services() {
		$extensions = array_map(
			'extension_loaded',
			array(
				'APCu'      => 'apcu',
				'Redis'     => 'redis',
				'Relay'     => 'relay',
				'Memcache'  => 'memcache',
				'Memcached' => 'memcached',
			)
		);

		$services = array_keys( array_filter( $extensions ) );

		/**
		 * Filters the persistent object cache services available to the user.
		 *
		 * This can be useful to hide or add services not included in the defaults.
		 *
		 * @since 6.1.0
		 *
		 * @param string[] $services The list of available persistent object cache services.
		 */
		return apply_filters( 'site_status_available_object_cache_services', $services );
	}