Cache Purging Without Any Trigger

  • Resolved curioussimpleton

    (@streamforte)


    7 months, 2 weeks ago

    Hello,

    Every 24 hours (approx, can be between 12-24 hours) my cache purges without any manual or automatic triggers.

    • Purge all cache.
    • Visit all pages of site manually to build cache (webhost doesn’t allow LS crawler to run)
    • Confirm x-qc-cache: hit
    • After 12/24 hours the same page shows x-qc-cache: miss
    • I had logging enabled, purge log shows no entry/no activity. It’s empty.
    • My auto purge setting – everything is disabled, except for ‘Purge All On Upgrade’
    • I created no new content/post when logging was enabled for this test. There was no upgrade during this duration either.

    Report # BOROLEPI

    I want to figure out why the cache is purging, when there is no trigger and nothing appearing in the log. Especially when it seems to be repeatedly happening between 12 to 24 hours after a cache has been generated.

    The page I need help with: [log in to see the link]

Viewing 4 replies - 1 through 4 (of 4 total)
  • Plugin Support litetim

    (@litetim)

    7 months, 2 weeks ago

    @streamforte Please enable debug and look into Purge Log for details about the purges.
    How to enable Litespeed Cache Debug: https://docs.litespeedtech.com/lscache/lscwp/troubleshoot/#turn-on-the-debug-log (no need for WP debug to be turned ON), just LSC

    Thread Starter curioussimpleton

    (@streamforte)

    7 months, 2 weeks ago

    @litetim I did enable debug/logging for testing this.

    • I had logging enabled, purge log shows no entry/no activity. It’s empty.
    • My auto purge setting – everything is disabled, except for ‘Purge All On Upgrade’
    • I created no new content/post when logging was enabled for this test. There was no upgrade during this duration either.

    The purge log was empty within WP, and the file in wp-content/litespeed/debug was also empty (0 bytes).

    Plugin Support qtwrk

    (@qtwrk)

    7 months, 2 weeks ago

    yes, the CDN nodes has its own cache management that may purge a CDN-side cache before its TTL due time , as long as you see x-litespeed-cache: hit or x-litespeed-cache: bkn , this indicates the cache is hit at origin as well

    Thread Starter curioussimpleton

    (@streamforte)

    7 months, 2 weeks ago

    Ah @qtwrk thanks.

    On pages where X-Qc-Cache: miss, it shows X-Litespeed-Cache: bkd

    So it’s just the CDN side cache purge, it’s still cached on origin. Thank you for clarifying that.

Viewing 4 replies - 1 through 4 (of 4 total)

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