Settings not saving with Object cache / Memcached

  • Resolved mennobouma

    (@mennobouma)


    4 years, 6 months ago

    Hi Alexandre,

    First of all, thanks for your great support :).

    I’m running on WPMU DEV Hosting (https://premium.wpmudev.org/hosting/) and i’m trying to save the settings of the plugin. But after saving the settings they are back to the previous version and after about 30 minutes the settings appear to be changed to my latest input. So there is some sort of lag.

    I think that after a cache flush the settings are good but it’s not very handy :). I run your plugin on other hosting and here the issue doesn’t happen.

    It’s only happening in your plugin, i can save settings in other plugins.

    I did a test with only your plugin enabled and with the Twentytwenty theme and the issue is still there.

    Any idea how to solve this?

    Thanks!
    Menno

    • This topic was modified 4 years, 6 months ago by mennobouma.
Viewing 5 replies - 1 through 5 (of 5 total)
  • Plugin Author Alexandre Froger

    (@frogerme)

    Hi Menno!

    Is it still happening with v1.2.6?
    The WordPress cache is explicitly flushed via a call to wp_cache_flush() before the settings get saved in the database.
    I tested successfully with Redis Object Cache and W3 Total Cache (with memcached) plugins.

    If that’s so specific to their hosting solution, could WPMU DEV Hosting give more information about how cache is handled there? Investing more time troubleshooting one type of hosting solution in particular doesn’t fall under the type of support I give on this forum. If you can help with that, it would be greatly appreciated and I’d be willing to follow up, otherwise we’d have to pursue the conversation through other channels.

    Plugin Author Alexandre Froger

    (@frogerme)

    Note: it may not be necessary to go further because I plan to remove the settings cache I put in place; after testing, the impact is marginal at best, counterproductive at worst. That was something included since v1.0, and been causing issues since. The trap of early optimization I guess…

    If you can wait until the next version when I’d have included more updates, then this should become a non-issue (I’ve been pushing updates rather fast lately and I don’t like that too much, it affects several connected websites, it gets people tired of updating and wondering what will break if they forget 1 site, even if it’s perfectly fine).

    Thread Starter mennobouma

    (@mennobouma)

    Hello Alexandre,

    Yes i run 1.2.6. on all remote sites. I think it’s not the WordPress cache but a server cache which gives issues. I had a chat with WPMU DEV of 2 hours and they couldn’t find a solution for it.

    Here is also a ticket: https://premium.wpmudev.org/forums/topic/issue-with-wp-remote-users-sync-updating-data/#post-3805927

    Maybe your settings cache is cached :), which gives a ‘lag’. If you have a beta version i would like to use it. I hope it doesn’t take too long to update, because i can’t change settings on the plugin. I would like to use it :).

    Plugin Author Alexandre Froger

    (@frogerme)

    The WordPress Forum is limited to discussions regarding released code ; please open an issue on GitHub ;).

    Plugin Author Alexandre Froger

    (@frogerme)

    Full fix deployed with v1.2.7 – closing

Viewing 5 replies - 1 through 5 (of 5 total)
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