It's true that the default of sqlalchemy is set in the designate.conf template for the charm. The memcache is currently used for coordination between designate instances, rather than as a caching service for the pool. There look to be quite a few memcached configuration options in the designate service, so it will need to be carefully thought through about how to add this feature.
TRIAGE:
It's true that the default of sqlalchemy is set in the designate.conf template for the charm. The memcache is currently used for coordination between designate instances, rather than as a caching service for the pool. There look to be quite a few memcached configuration options in the designate service, so it will need to be carefully thought through about how to add this feature.