Delayed purge of post / page

  • Resolved terry777

    (@terry777)


    2 years ago

    Hi,

    I have this plugin on a number of sites. After I edit a post/page, I purge the cache so the changes are displayed. If I visit the post/page while I’m still logged in, I see the changes. On all but one site, the changes are displayed, even if I’m not still logged into the dashboard. I have one site where most of the time, once I log out, or check with a different browser, the changes are not displayed. It may take up to an hour to reflect the changes. I have not been able to figure out why. I’ve tried various methods of purging – the “purge from cache” link on the right, the “purge all caches” in the admin bar, and even gone down to the general settings to “save settings & purge caches”. Occasionally one of them works, but I’m guessing it’s coincidence.

    I don’t know what setting(s) to look at, or whether one of the two drop-in plugins installed are conflicting. The two drop-ins are advanced-cache.php and object-cache.php. I think the host must have enabled those. There’s no way to disable or remove them on the dashboard, so I can’t test to see if either of them is the cause.

    Most of the time it isn’t a problem, but sometimes I’m asked to make a change and have to tell them to check back later to see it, which is sometimes an issue, if the change is time-sensitive.

    Any suggestions? Thanks.

    • This topic was modified 2 years ago by terry777.
Viewing 5 replies - 1 through 5 (of 5 total)
  • Plugin Contributor Marko Vasiljevic

    (@vmarko)

    Hello @terry777

    Thank you for reaching out and I am happy to assist you with this.

    First, please let me know if you are only adding new content/ updating posts, or if are you making changes within the JS/CSS files.

    Can you please also share the URL of the website you are having issues with the cache after updating the content, and please let me know if you have another layer of caching, like proxy, or server level caching?

    Thanks!

    Thread Starter terry777

    (@terry777)

    This happens when editing an existing post/page. I’ve not noticed whether it happens when editing CSS, as that doesn’t often need to be done. As far as I know there’s no proxy or server level caching, but I’d have to check.

    capecodbirdclub.org

    Plugin Contributor Marko Vasiljevic

    (@vmarko)

    Hello @terry777

    Thank you for sharing the URL.

    I’ve checked the website and I can see the following headers:

    x-proxy-cache: HIT
    x-server-cache: true

    As I suggested in the previous post, this means that you have another layer of caching, and this cannot be handled by the W3 Total Cache of course. So you should purge the server cache as well or configure it and lower the TTL.

    Thanks!

    Thread Starter terry777

    (@terry777)

    Thanks so much for looking into this. Would this have anything to do with the two “drop-in” plugins advanced-cache.php and object-cache.php? I didn’t see anything on the cPanel that referred to caching. What does “lower the TTL” mean? Thanks!

    Plugin Contributor Marko Vasiljevic

    (@vmarko)

    Hello @terry777

    The advanced-cache.php and object-cache.php are W3 Total cache drop-ins which are there in order for Page Caching and Object Caching to work and you have both enabled as I can see.
    Lowering the TTL means that you should lower the time to live of the server-side cache, or simply disable it and let W3TC as the only caching solution.

    You should reach out to your hosting provider as this may be automatically set on the host.

    Thanks!

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