MAxCache breaks Moodle Slash Arguments (Path Info)

Issue

Enabling Max Cache for Moodle sites and Slash Arguments break (Path Info) and returns a 404 error 

Environment

• MAx Cache
• cPanel
• Moodle 5.x

Solution

Use .htaccess file to exclude PATH_INFO-style URLs from MAx Cache and only cache plain pages:
 

<IfModule maxcache_module>
    MaxCache On

    # Don’t cache Moodle slash-argument URLs
    MaxCacheExcludeURI "^/index\.php/"

    # Don’t cache common dynamic Moodle areas
    MaxCacheExcludeURI "^/(admin|auth|backup|blog|calendar|course|enrol|file|lib|login|message|mod|my|report|user|webservice)(/|$)"

    # Optional: exclude logged-in users and session-based pages
    MaxCacheExcludeCookie "(MoodleSession|_moodle_session|logged_in)"

    # Cache only safe public pages
    MaxCachePath /moodlecache/{HTTP_HOST}{REQUEST_URI}/index{SSL_SUFFIX}.html
</IfModule>

Note:  moodlecache in  MaxCachePath is just an example cache location, so please use a directory that exists and is writable.

Cause

Moodle specific MAx Cache config required

Useful links

https://docs.cloudlinux.com/cloudlinuxos/shared-pro/#max-cache-documentation