EventScopeEVENTSEVENTS / ENVELOPES / RECOVERY

EventScope / About

Events that stay understandable as systems grow.

A developer reference for event envelopes, stream boundaries and consumer recovery. Design for asynchronous work without hiding delivery assumptions from the teams that depend on it.

Stream design workspace

The workflow

  1. Define the event

    Describe a fact that occurred, its identity and the minimum useful payload.

  2. Choose stream boundaries

    Set ordering, retention and consumer responsibilities for that class of event.

  3. Practice recovery

    Replay a controlled sample and verify duplicate handling before relying on the stream.

Stream design workspace

The working library

Design an event as a fact

A stable envelope helps producers and consumers evolve separately.

Ordering and partition boundaries

Choose the smallest ordering guarantee the domain requires.

Consumer recovery and replay

A replay should be controlled, inspectable and safe.