SQLite Object Cache
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About
A fast persistent object cache backend for the rest of us, powered by SQLite and accelerated by APCu
What It Does
SQLite Object Cache provides a persistent object cache backend for WordPress by storing cached data in a local SQLite database, with optional in-memory acceleration via APCu. It drops in as a drop-in object cache, replacing the default non-persistent cache so queries, transients, and other internal data reuse results between page loads.
Who It's For
This plugin is ideal for site owners on shared or budget hosting where Redis or Memcached are unavailable, since SQLite is bundled with most PHP installations. It is well suited to small business sites, blogs, WooCommerce stores on modest infrastructure, and agencies deploying across many low-tier client accounts.
Who Should Skip It
Sites that already have access to Redis or Memcached should use a dedicated in-memory backend like Redis Object Cache, since disk-backed SQLite will be slower than either. High-traffic publishers handling tens of thousands of requests per minute should look at LiteSpeed Cache or a full page cache layer instead.
The Bottom Line
SQLite Object Cache fills a real gap: a usable object cache for hosts that cannot run Redis or Memcached, with an active maintainer and a perfect ratings record. It is not going to outperform a proper in-memory backend, but for its target audience of constrained hosting environments it is one of the best options available. Worth installing if you have tried page caching alone and still see slow database queries.
Related Plugins
Pick this if your host runs LiteSpeed web server and you want a full page cache, CDN integration, and optimization suite rather than just an object cache backend.
Choose Jetpack when you need caching bundled with security, backups, and stats, and you are willing to accept a heavier plugin for the convenience.
Pick Redis Object Cache if your hosting supports Redis, since in-memory Redis will outperform SQLite for high-write or high-read workloads.
Choose this when you want edge caching through Cloudflare in front of WordPress instead of a server-side object cache.
Pick WP-Optimize if you also need database cleanup and image compression alongside basic page caching on a typical shared host.