atec Cache APCu combines an optimized persistent object cache with an optional APCu-powered page cache WordPress repeatedly loads options, settings, post metadata, user data, and database query results while generating a page. Many of these objects remain unchanged between requests, yet WordPress must retrieve and process them again. https://medium.com/@chris.ahrweiler/boost-your-wordpress-site-with-the-fastest-apcu-object-cache-available-a02fe88b470e