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ADR-016-matches-published-as-events.md

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ADR-016: Matches published as events

Date:

2024-09-26

Status:

Accepted

Context:

Matches status changes are key events that influence use-cases in many parts of the system. With synchronous communication, the whole system is strongly coupled leading to bad fault-tolerance. We mitigate this by creating an event-queue to allow for asynchronous communication between these use cases.

Decision:

We use an event queue for matches and their status in order to asynchronously notify all downstream processes.

Consequences:

  • Technology decision: shared queues / event streaming

Strengthened characteristics:

  • Fault-tolerance
  • Evolvability
  • Performance
  • Scalability

Weakened characteristics:

  • Testability
  • Simplicity