Multisite with domain mapping and purge cache after post update

Hello @pepe80

Thank you for your inquiry and I am happy to assist you with this.
Please go to Performance>Page Cache, Aliases sub-box, and add that domain in Additional home URLs: field, save all settings and purge the cache.
See if the issue persists.
Thank you!

Can I set these options in one place: network admin? If i have to unchecked the option:
“Use single network configuration file for all sites.”
…then I must solve this problem first:
https://www.ads-software.com/support/topic/multisite-separate-configuration-does-not-work/
??

Hello @pepe80

Yes, you can set it on your main website.
Does the issue persist when you add the URL to aliases?
Thanks!

The problem still persist. Here is the bigger picture of the site structure:

Main site: mysite.com
Here I never have an issue with cache purge.

Other sites (subdomain -> domain mapping):
subdomain1.mysite.com -> site1.com
subdomain2.mysite.com -> site2.com
…
Here I have problem with cache purge after post update (or click: Performance -> Purge Modules -> Page Cache: Current Page).

In “/cache/page_enhanced/” folder i see:
mysite.com – no problem
site1.com – problem
site2.com – problem
subdomain1.mysite.com – no problem
subdomain2.mysite.com – no problem

Hello @pepe80

Thank you for the information.
Just to confirm, the issue occurs if you use Purge Current Page?
Does the issue persist if you purge all cache?
Thanks!

Purge All Caches – works fine
Purge Current Page – does not work

Hello @pepe80

The Purge Current Page is based on post_id=
In your case, the post_id is not the same so you should use Purge all caches in this case.
Thank you!

Hi Marko,
sorry but I don’t understand. I’m an advanced programmer so you can use technical language ??

I’m on the post editing page:
/wp-admin/post.php?post=2778&action=edit&lang=lt

Link to “Purge Current Page” looks like this:
/wp-admin/admin.php?page=w3tc_dashboard&w3tc_flush_post&post_id=2778&_wpnonce=e63aea3956

So… post_id is the same: 2778. Under “Title” input I see url:
https://subdomain1.mysite.com/somepage
Cache is not cleaned in the directory:
/cache/page_enhanced/site1.com/somepage/

• This reply was modified 4 years, 6 months ago by pepe80.

The question is: does your plugin support domain mapping?
https://www.ads-software.com/plugins/wordpress-mu-domain-mapping

WordPress Multisite Domain Mapping

• This reply was modified 4 years, 6 months ago by pepe80.

Hello @pepe80

Ah I see. Thank you for the explanation.
Domain mapping is not core wp functionality and not supported directly.
You can purge alternative URLs using mirror option Performance>Page cache>Aliases
Thank you!

Ok, in that case, I have to wait for this problem to be resolved:
https://www.ads-software.com/support/topic/multisite-separate-configuration-does-not-work/

Before WordPress 4.5, domain mapping requires a domain mapping plugin like WordPress MU Domain Mapping. In WordPress 4.5+, domain mapping is a native feature.

Hi @vmarko,
unfortunately, the problem still occurs. Let me remind you how my multisite looks like:

Main site: mysite.com
Here I never have an issue with cache purge.

Other sites (subdomain <- domain mapping):
subdomain1.mysite.com <- site1.com
subdomain2.mysite.com <- site2.com

In the admin panel I switch to the website:
subdomain1.mysite.com

I set the option Performance > Page cache > Aliases:
https://pasteboard.co/Ja0QeG5.png
I have tried:
https://site1.com
https://site1.com
site1.com

When I update a post (or use “Purge Current Page”) cache it’s not cleaned here:
/cache/page_enhanced/site1.com/…

• This reply was modified 4 years, 6 months ago by pepe80.
• This reply was modified 4 years, 6 months ago by pepe80.

I can see where the problem is:
\plugins\w3-total-cache\Util_PageUrls.php

	static public function complement_with_mirror_urls( $queued_urls ) {
		$config = Dispatcher::config();

		if ( !$config->get_boolean( 'pgcache.mirrors.enabled' ) ||
			Util_Environment::is_wpmu_subdomain() )
			return $queued_urls;

		$home_urls = $config->get_array( 'pgcache.mirrors.home_urls' );

This function:
Util_Environment::is_wpmu_subdomain()

…returns true because i have multisite “subdomain install”:
define('SUBDOMAIN_INSTALL', true);

Why in this case you interrupt further processing in complement_with_mirror_urls() function and don’t get values from an aliases array?
If I comment this condition, everything starts working properly and the cache is cleared.

Hi @vmarko,
I see that the topic is marked as “Resolved”. Should I create a new topic?