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Sidecar

A container deployed alongside business logic that handles cross-cutting concerns. The sidecar pattern separates infrastructure from business code.

In Angzarr​

The Coordinator is deployed as a sidecar container with your business logic. It handles:

  • Event persistence and retrieval
  • Command routing
  • Subscription management
  • Health checks
  • gRPC communication

Architecture​

┌─────────────────────────────────┐
│           Pod                    │
│  ┌─────────────┐ ┌────────────┐ │
│  │  Business   │ │ Coordinator│ │
│  │   Logic     │◄──► (Sidecar) │ │
│  │  (your code)│ │            │ │
│  └─────────────┘ └────────────┘ │
└─────────────────────────────────┘

Benefits​

  • Language agnostic: Business logic in any language
  • Separation of concerns: Infrastructure code isolated
  • Consistent behavior: Same coordinator for all components
  • Independent scaling: Coordinator handles connection pooling