How does Matrix choose a system root URL for __data assets?

Squiz Matrix Support
1

Our Matrix CMS has multiple system root urls. At the moment it's generating content with the address for __data/assets being:


http://$ROOT_URL1/__data/assets/



I'd like to change this behaviour so that it instead generates addresses for __data/assets with:



http://$ROOT_URL2/__data/assets/



How does Matrix choose which system root URL to use for __data assets? Is it simply the order on the System URL Settings tab inside System Configuration?

2

Matrix will choose the closest one to current URL if possible.


If you visit http://$ROOT_URL1/page, and there is a link on the page to a file asset.

The link will be http://$ROOT_URL1/__data/xx. If you visit the page on $ROOT_URL2, the file link will be $ROOT_URL2 as well.

3

We are hosting multiple sites with different domains in Matrix. From my experience, don't put files in the "media folder" otherwise I have to add new URL to the folder when a new site with a new URL is added, same rule to the design folder. I always put everything under the site asset.