Automattic\WooCommerce\Internal\Api

QueryCache::is_caching_enabled │ private │ WC 1.0

Whether at least one cache backend is enabled (and, for OPcache, usable).

Used to short-circuit the standard-query path when neither backend is available, so the request is parsed once with no cache lookup overhead.

Method of the class: QueryCache{}

No Hooks.

Returns

null. Nothing (null).

Usage

// private - for code of main (parent) class only
$result = $this->is_caching_enabled(): bool;

QueryCache::is_caching_enabled() code WC 10.9.1

woocommerce/src/Internal/Api/QueryCache.php 
private function is_caching_enabled(): bool {
	return ( Main::is_opcache_enabled() && $this->is_opcache_usable() )
		|| Main::is_object_cache_enabled();
}