Also this is not used in the “Request.php” file while processing contents in the Matomo server.
If this is not used, can we just remove this from the query string parameters, and avoid any confusion to anyone else, and have less data being sent to the Matomo tracking servers.
I’m pretty sure this random string is not used in any way on the server and is only for the case that you have a misconfigured webserver that caches every GET request in front of Matomo.
Update: Seems like this parameter has been Part of Matomo for as long as I can go back in the source history (10 years)
Matomo doesn’t need this string, but if you have configured your webserver to cache identical requests then the second time someone tracks the same data it won’t reach Matomo.