Is there a known conflict between WPMU Domain Mapping plugin and Clear Cache?

I have had some of my subsites (those who installed Domain Mapping) tell me that there new posts were not visible once published. So I tested it myself:

1. I created a new post to test two mapped domains (two of my subdomain subsites) and sure enough, the Cache plugin I am using (Clear Cache) did not "auto-clear" the cache like it's supposed to. Thus, I could not see the new post in the browser.

2. Then I did the same with two of my sites where the Domain Mapping plugin is not yet activated. In these cases, Clear Cache worked as designed and auto-cleared the cache, which reflected in the new posts being visible immediately on the browser.

So, it looks pretty clear to me that Clear Cache and the Domain Mapping plugin do not work together.

Is there anything I can do about this with the Domain Mapping plugin? I didn't see any settings to adjust on the Clear Cache plugin.

If there is not easy fix, I suppose I can switch to a different cache plugin. Do you know which cache plugins work (for sure) with the domain mapping plugin?

Thanks, Joe.

  • Tyler Postle
    • CGO

    Hey Joejacobson,

    Hope you're doing well today!

    I have not heard of this happening before. I would try out WP Super Cache, I have never seen anyone here have an issue between domain mapping and super cache :slight_smile:

    W3TC plugin is another option that could be worth trying out, haven't seen anyone have this issue on that plugin here.

    Let us know if you have any further questions here Joe, more than happy to help!


  • Ash
    • WordPress Hacker

    Hello @joejacobson

    I hope you are well today.

    Yes, you have to completely remove all references of old caching plugin. Caching plugins add some code not only in wp-config.php but also in .htaccess sometimes. So, you need to check that file too.

    Also, I will recommend to take a backup before proceeding :slight_smile:


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