Object Cache Pro’s diagnostics provide a deep insight into its overall state.

You can access the diagnostics through:

  • Tools > Site Health > Info
  • WP CLI: wp redis diagnostics
  • The Query Monitor plugin

The dashboard widget will also show some diagnostic information and errors, but not as many as the options above.

Eviction Policy

To avoid Redis running out of memory and your site going down, it’s recommended to set Redis’ maxmemory-policy configuration option to allkeys-lru or allkeys-lfu.

If this causes too much CPU usage in your particular set up, you can use a reasonable maxttl for your setup. See configuration options.