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The Tungsten Connector proxy within a Tungsten Cluster is a very powerful tool, able to route traffic many different ways. The Quality Of Service (QoS) determines where the Connector proxy will send client request packets, either to the Primary for writes or to a Replica for reads. This short blog post will show you how to use the command line to control the Quality Of Service when creating a new connection to the MySQL Server database.

The purpose of the cctrl command is to provide easy access to the Tungsten Manager layer, which in turn controls the entire cluster. In this post we will explore the cctrl> service command and the power it provides to the admin.