Many database queries per request, slow dashboard
Object cache (Redis or Memcached) keeps repeated DB results in memory. For WP with many plugins it's a big shift.
support/web-en-cms/object-cache-redissteps: 4
Try this first
- Ask your host whether Redis or Memcached is available
- Install Redis Object Cache plugin or W3TC with object cache enabled
- Test in staging: dashboard should feel faster, queries-per-page lower
- Monitor cache hit ratio, target above 90%
When to bring us in
No Redis at your host, consider a host that includes it out of the box for a small monthly add.
See also
- WordPress, plugins and theme have gone 6+ months without updatesOut-of-date WP is the number-one entry for malware. Don't just hit 'update all', back up first.
- Theme update broke the layout or threw a fatal errorThemes overwrite custom CSS on update unless you use a child theme.
- WordPress shows a blank screen after a plugin install or updateWSOD (white screen of death) is usually one crashing plugin. You isolate it.
None of the above fits?
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