Monitoring the Namespace DNS record
When using a Namespace with High Availability features, the Namespace's DNS record <ns>.<acct>.<tmprl_domain> points to a regional DNS record in the format <region>.region.<tmprl_domain>.
Here, <region> is the currently active region for your Namespace.
During failover, Temporal Cloud changes the target of the Namespace DNS record from one region to another. Namespace DNS records are configured with a 15 second TTL. Any DNS cache should re-resolve the record within this time. As a rule of thumb, receiving an updated DNS record takes about twice (2x) the TTL. Clients should converge to the newly targeted region within, at most, a 30-second delay.
AWS PrivateLink customers should visit the dedicated AWS PrivateLink page for configuration details.