Garbage Collection Not Working

  • I’m having an issue with WP Super Cache’s garbage collection. Though I’ve set the cache timeout and garbage collection timer at 3600 and 600 secs respectively, and have admittedly enabled the Cron system, but the garbage collection doesn’t work at all, so while looking at the cache directory, I still find stale, expired cached files intact.
    I’ve also noticed that WP Super Cache has not updated .htaccess file by adding its Mod_Rewrite Rules, which may be the source of the problem.
    Here is more info about the basic setup of the plugin:
    Cache Method: Simple
    Compress Pages: Enabled
    Cache Rebuilt: Enabled
    304 Not Modified: Enabled

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  • You don’t need mod_rewrite rules with simple caching so don’t worry about that.
    To diagnose the garbage collection you’ll need to enable debugging in the plugin. That will print lots of information if CRON is firing.

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