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Pacco's async gateway answers a POST with two names - the ID a resource will have and the operation that tracks whether it ever gets it. Following both through the Redis state machine, the saga header override and the per-user SignalR push, warts and all - a five-minute memory, a 404 with three meanings, and a status API anyone can read.
Pacco's Operations service narrates the estate twice - once over SignalR with a JWT handshake and per-user groups, once over a gRPC stream with no auth, no filtering, a per-call event-handler leak and a blocking Take. Same data, same service, two security models.
Thirteen repositories, one umbrella that runs twelve of them, two interchangeable API gateways and a service that watches everything - the Pacco estate read as a system of systems, and the fifteen-part series it earns.
DShop runs a whole SignalR service to push operation results to the browser in real time - JWT handshake, per-user groups, Redis backplane. No frontend connects to it, and both UIs sleep through eventual consistency instead.
