Cache Purging

Purging Caches

BlitzPress manages 4 cache layers. You can purge them individually or all at once.

One-Click Purge All

From the panel, click “Purge Cache” on any site. This clears all 4 layers:

1. LSCache Plugin Cache — runs wp litespeed-purge all to clear all page-level cached HTML
2. LSCache File Cache — removes /wp-content/litespeed/ and /wp-content/cache/litespeed/ directories
3. Redis Object Cache — runs FLUSHDB on the site’s Redis database to clear all cached queries and transients
4. OPcache — sends USR2 signal to lsphp processes to invalidate all compiled PHP bytecode

After purging, OpenLiteSpeed is gracefully restarted to ensure clean state.

When to Purge

• After making theme/CSS changes that don’t appear
• After installing or updating plugins
• If you see stale content
• After changing wp-config.php settings
• After database imports or search-replace

Automatic Purging

Most cache invalidation happens automatically:

• Post publish/update → LSCache purges the post URL, homepage, and archive pages
• Theme/plugin changes → evo-cf-autopurge.php purges Cloudflare edge cache
• Option updates → relevant cache keys are invalidated in Redis

Purge All Sites

You can also use domain: "all" to purge every site on the server at once. This is useful after server-level PHP or OLS configuration changes.