Cache

RDMO uses a cache for some of it’s pages. In the development setup, this is done using local-memory caching. In production, we suggest using memcached. Memcached can be installed on Debian/Ubuntu using:

sudo apt install memcached

On RHEL/CentOS a few more steps are needed. First install the package using:

sudo yum install memcached

Then edit the settings file to prevent external connections:

# in /etc/sysconfig/memcached
PORT="11211"
USER="memcached"
MAXCONN="1024"
CACHESIZE="64"
OPTIONS="-l 127.0.0.1"

Then start the service:

systemctl start memcached
systemctl enable memcached

Back in your virtual enviroment, you need to install python-memcached:

pip install -r requirements/memcached.txt

and add the following to your config/settings/local.py:

CACHES = {
    {
        'BACKEND': 'django.core.cache.backends.memcached.MemcachedCache',
        'LOCATION': '127.0.0.1:11211',
        'KEY_PREFIX': 'rdmo_default'
    },
    'api': {
        'BACKEND': 'django.core.cache.backends.memcached.MemcachedCache',
        'LOCATION': '127.0.0.1:11211',
        'KEY_PREFIX': 'rdmo_api'
    }
}