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OrderService — Split Dead-Letter Replay with Entity Framework

Location: samples/deadletter-relay/
Transport: SQLite-backed dead-letter repository + in-memory recovery channel
Pattern: Persistent dead-letter storage with a separate replay worker

What it demonstrates​

  • Hermodr.Publisher.DeadLetter.EntityFramework as a persistence layer
  • one application that persists failed deliveries into the dead-letter store
  • a second application that polls the shared store and replays pending messages
  • background replay through WithReplayWorker(...)

Flow​

OrderService.Publisher
    │
    ▼
failing channel  ──── stores dead-letter row in SQLite
    ▲
    │  poll every 5 s
    │
OrderService.DeadLetterWorker
    │
    ▼
recovery channel

This sample keeps the publisher and the replay worker completely separate, with the shared database acting as the hand-off point for replay.

Run it​

cd samples/deadletter-relay/OrderService.DeadLetterWorker
dotnet run

cd samples/deadletter-relay/OrderService.Publisher
dotnet run

For the full walkthrough, see the sample README.