Architecture
You can configure CDL through PCF Ops Center. CDL in the GR mode replicates the session data across the configured sites. When PCF connects to the CDL, it always treats the local CDL endpoints as the primary endpoint and the remote endpoints as secondaries (with the appropriate rating). PCF uses the secondary endpoints when the connection to the primary endpoint fails.
The following illustration depicts the failover that happens when the PCF Engine is unable to access the primary CDL datastore endpoint.
