The DNS Cache memory database backend is a on-memory database with data persistence.
This service is able to increase the performance of your DNS Cache service and allows you to persist data stored.
In this case, restarting the DNS Cache service will not flush the entire database of your DNS service.
The DNS Cache memory database backend is available on Artica v4.30 Service Pack 60 or above.
First, ensure you using the latest version of your DNS Cache service (1.11.x or above ). Upgrade using this procedure.
If you encounter an error, and if you see "Incompatible feature" in the installation events, this means you did not have upgraded your main DNS cache service version.