Configuring Keystone caching with Memcached
Large OpenStack environments usually require Keystone to handle a huge amount of authorization and authentication requests as Keystone is invoked on almost every OpenStack operation. To improve the scale Keystone can handle in heavy load environments we can configure the Keystone caching mechanism. The caching mechanism can store Tokens, User Identities, and Roles instead of retrieving them from a remote store. Keystone supports caching all configurable subsystems using a caching backend mechanism.
Getting ready
In this recipe, we configure Keystone to use Memcached caching service as a backend plugin for caching Keystone. We will need to install and configure the Memcached service first.
- Install the
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