MemcachedCache is not working as django MEMCACHED_BACKEND

[mattiagiupponi]

Expected Behavior

If i set MEMCACHED_ENABLED=True and MEMCACHED_BACKEND=django.core.cache.backends.memcached.MemcachedCache the cache should work

Actual Behavior

Django raise an error:

Could not find backend 'django.core.cache.backends.memcached.MemcachedCache': Module "django.core.cache.backends.memcached" does not define a "MemcachedCache" attribute/class

From Django 4.1, MemcachedCache support has been dropped, see releases notes .

We should change the cache system and use PyLibMCCache for example

Steps to Reproduce the Problem

1. on master set set MEMCACHED_ENABLED=True
2. Run django

Specifications

• GeoNode version: master ONLY
• Installation type (vanilla, geonode-project): master ONLY
• Installation method (manual, docker): docker / manual
• Platform:
• Additional details: only master is affected since is the only branch that uses Django 4.2

[giohappy]

Keep in mind that at the moment the usage of a real Django cache is not very well tested. There were problems reported with the REST API.
The only real cache backed by Memcached that we're actively using is the one for the transaction locks., and it uses pylibmc