From Bottlenecks to Reliability: A Practical Guide to Scaling Temporal in Production

Temporal is designed to preserve Workflow state through process crashes and infrastructure failures, but durable state does not remove ordinary capacity limits. In production, the control plane can remain healthy while throughput collapses because Worker slots are saturated, Task Queues mix incompatible workloads, or a failover activates a region without enough Worker capacity. Temporal Workers run outside the Temporal Service and execute Workflow and Activity code, so production scalability depends as much on Worker and routing design as on the service itself.