What is an object cache?
WordPress reads options, transients, product meta and widgets from the database dozens to hundreds of times per request. An object cache keeps those repeated reads in memory. WooCommerce, Elementor, multilingual, LMS and membership sites gain most — especially pages a page cache cannot serve: cart, account, search and the dashboard.
One click
In a WordPress site → Speed tab → “Cloud object cache”, choose “Enable cloud cache” (the same suggestion appears on the console overview and the site overview). Nothing is asked. WhyCloud 1) measures the current speed, 2) creates a dedicated Valkey cache for this site, reachable only on the site’s private network and protected by a random 40-character password (stored sealed), 3) installs wp-content/object-cache.php and connects WordPress. The cache is sized from the site’s plan (128 MB to 1 GB) at no extra cost.
Impact report
About 5 minutes later (once the cache is warm) the same pages are measured again: home, search, REST API and the shop. Time to first byte bypasses the page cache and CDN and is the median of several requests. The speed-up, before/after bars per page and the hit rate are shown, and “Measure again” is always available.
Plugin advice
The site’s plugins are read and advice is given for WooCommerce, Elementor, WPML, Polylang, Yoast and more. If another plugin manages the object cache (LiteSpeed Cache’s or W3 Total Cache’s Object Cache, or Redis Object Cache) you are told to turn it off.
Security
The cache has no port open to the internet, only the site on its private network can reach it, it is password-protected and writes nothing to disk. If it is unreachable the site silently continues without it.
Your own Redis (optional)
If you run a separate Redis or Valkey, choose “Connect my own Redis” and enter its address, port and password; the connection is tested before the site changes.
Turning it off
“Turn off cache” removes the drop-in and the dedicated cache and republishes the site. After moving the site to another datacenter, the cache is re-enabled with one click.