why memcached cann't be enabled in dashboard
I am installing Openstack of Mitaka and Centos7.
When I add SESSION_ENGINE = 'django.contrib.sessions.backends.cache' in localsetting file as the installation file mentioned, I can't access the website of Openstack, the erros is as below: "Unable to create a new session key. " [Fri Mar 03 16:29:22.382562 2017] [:error] [pid 28850] RuntimeError: Unable to create a new session key. It is likely that the cache is unavailable.
but if I remove it, I can access the website by webrowsers but the speed is slow becausse no cache I guess, I want to know why? Thanks!