How it works

Support, stability, and dependency info

High-availability Namespaces are in Public Preview for Temporal Cloud.

In traditional active/active replication, multiple nodes serve requests and accept writes simultaneously, ensuring strong synchronous data consistency. In contrast, with a Temporal Cloud high-availability Namespace, only the active zone accepts requests and writes at any given time. Workflow history events are written to the active zone first and then asynchronously replicated to the standby zone replica, ensuring that the replica remains in sync.

Needs new images

Before failover	After failover