Event Stream

Kind: mechanism

Layer: Execution Core

Record: architecture:event-stream

Severity: contextual

Scope: stream processing, integration

Canonical: Ontology

A mechanism that keeps events in an ordered, replayable log that consumers read from their own offset.

Listed in Architecture principles, after Event Bus and before Event Sourcing.

Requires

• Ordered Log
• Event Schema

Reinforces

• Streaming Architecture

Enables

• Replay
• Continuous Processing

Conflicts with

• Mutable State Only

In tension with

• Storage Volume

Tensions

• Event Stream / Storage Volume

Violated by

• Non-Replayable Processing

Refactored by

• Offset Tracking

Severity

• contextual

Category

• Event / Messaging / Asynchronous Architecture

Refactors

• Memory Efficiency

Linked from

• Error Handling / Resilience
• Scalability / Performance / Optimization
• Streaming / Pipeline / Dataflow Processing
• Core Vocabulary
• Event Messaging Async
• Severity levels
• The resolutions