W3 Total Cache object cache breaks plugins (6 posts)

  1. Daniel J. Lewis
    Posted 4 years ago #

    I'm running WordPress 3.2.1 in Network mode.

    I have Pretty Link Pro enabled.

    When Object Cache is enabled in W3TC, I can't save options in some plugins. Most notably to me is Pretty Link Pro. It won't write to the database at all.

    But as soon as I disable Object Cache, I can change the options in my plugin (in this case, Pretty Link Pro) and the changes are saved.

    Interestingly, removing "plugins" from the "non-persistent groups" list fixed this problem on one of my sites, but not another.

    Here's a video demonstration of what's happening:


    I don't think this initially happened when I upgraded to It started when I tried optimizing my site after receiving a notice of CPU cycle overage from my web host.

    Please help me figure this out!


  2. theroundwell
    Posted 3 years ago #

    Have you progressed on this issue at all?

  3. Daniel J. Lewis
    Posted 3 years ago #

    No. Except that removing "plugins" from the "non-persisitent groups" list seemed to have stop fixing the problem. So I have to disable object cache altogether.

    By the way, I think W3TC has problems with WordPress 3.3 because RSS feeds don't update when they're supposed to unless the cache is cleared.

  4. andreasnrb
    Posted 3 years ago #

    Did you file a bug report from the Support page in the plugin?

  5. Daniel J. Lewis
    Posted 3 years ago #

    No. I had expected that the developer reads these forums.

  6. Frederick Townes
    Plugin Author

    Posted 3 years ago #

    There's an issue with garbage collection that needs to be addressed to help with feed issues. As for the plugin, did you ask the author how the plugin can work with caching?

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