Hello Kaydan, Newscoop is now obsolete and I would recommend Drupal instead, as it really isn't worth the time trying to develop a new site with it as it is incompatible with Ubantu 16/PHP 7 and the versions of dependencies included will take a very long time to upgrade because of depricated functions should you want to make it current - although the platform will work on Ubantu 14..
In answer to your question, memcached will work and I would also suggest installing memcache (the older version) in case the System Preferences dialog does not recognise it - i.e. apt-get install memcached as well as apt-get install memcache.
From what I remember, Redis will also work but can generate a bug (I think the bug related to image uploads, although it's a while since I developed sites with Newscoop).
Post edited by No Longer Active at 2020-05-28 05:03:45