Short answer
It helps database-heavy sites — a busy WordPress site with WooCommerce or many plugins — by keeping repeated database results in memory. For a small brochure site, page caching alone gives you nearly all the benefit with less to configure.
Learn more
- Using Redis object caching with WordPressTurn on Redis for your account and connect WordPress with an object cache plugin, then confirm cache hits.
- Caching WordPress on shared hostingHow page caching makes WordPress dramatically faster, how to choose and configure a caching plugin, and the pages that must never be cached.
- What is caching? Page, browser, object and CDN caching explainedThe different layers of website caching, what each speeds up, and which ones matter most for a site on shared hosting.
Step-by-step
- Speed up a slow WordPress siteAdvanced · 60 min · 9 steps