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Sankofa/docs/marketplace/sovereign-stack/event-bus.md
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Phoenix Event Bus

Category: PLATFORM_SERVICES
Publisher: Phoenix Cloud Services
Status: PUBLISHED
Version: 1.0.0

Overview

Phoenix Event Bus provides durable event streaming with replay, versioning, and consumer idempotency. Implements DB Outbox pattern for atomic state + event writes. Supports Kafka, Redpanda, and NATS backends.

Key Features

  • DB Outbox pattern: Atomic state + event writes
  • Event versioning: Schema evolution support
  • Consumer idempotency: Exactly-once processing
  • Replay support: Replay events from any point
  • Multiple backends: Kafka, Redpanda, NATS
  • Offset tracking: Consumer offset management
  • Correlation ID support: End-to-end request tracking

API Endpoints

Publish Event

POST /events/publish
Content-Type: application/json

{
  "eventType": "user.created",
  "aggregateId": "user_123",
  "payload": {
    "email": "[email protected]"
  },
  "correlationId": "req_456"
}

Consume Events

GET /events/consume?consumerId=consumer_123&eventType=user.created&limit=100

Replay Events

POST /events/replay
Content-Type: application/json

{
  "eventType": "user.created",
  "fromTimestamp": "2024-01-01T00:00:00Z",
  "toTimestamp": "2024-12-31T23:59:59Z"
}

Pricing

  • Model: Subscription-based
  • Base Price: $149/month
  • Per GB Storage: $0.10
  • Per Million Events: $5.00

Compliance

  • SOC 2 Type II

SLA

  • Uptime: 99.95%
  • Latency: <100ms p95

Architecture

  • Database outbox table
  • Background workers for processing
  • Event versioning schema
  • Consumer offset tracking