Example 17: Saga State & Compensation

[patterncatalyst]

Chapter

_docs/17-appendix-d-sagas.md — Saga State & Compensation

Example Path

examples/17-sagas/

What to demonstrate

• Orchestrated saga across order/payment/inventory
• State machine persistence surviving crashes
• Compensation flow unwinding committed steps in reverse
• Threading step output to the next without coupling

Stack

• Infra: Podman — Postgres + Kafka + LGTM
• Language: Go (state machine with sony/gobreaker) or Python
• Priority: HIGH — key distributed pattern

Deliverables

• compose.yaml
• Saga orchestrator service
• Participant services (payment, inventory)
• Compensation handlers
• README.md
• verify.sh
• Flip chapter footer to verified