When Cached State Isn't Enough: Adding PostgreSQL with .NET Aspire

In part one, PulseOps hit its first distributed-systems problem. Two API replicas each owned their own cache, so the same service could look healthy through one replica and unhealthy through another. Moving that short-lived status into Redis fixed the ownership boundary: Both replicas now see the same cached status. That solves shared state. It does not solve durable state. If PulseOps creates an