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storage/docs/architecture/decisions/021-edge-identity-uses-consumer-keys.md
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2026-05-29 07:19:03 +00:00

730 B

ADR-021: Edge identity uses consumer-defined keys

Status

Accepted

Context

Edges need unique identity within a graph. Auto-generated UUIDs vs consumer-defined keys affect how edges are referenced and updated.

Decision

Edges use (graphId, key) as their unique identity, where key is consumer-defined. This matches the metagraph model where consumers control identifiers. For anonymous edges (common in simple graphs), key can be auto-generated.

Consequences

  • Consumers can reference edges by meaningful keys (e.g., "call-001→call-002")
  • Updates use the consumer's key, not a generated UUID
  • Anonymous edges can have null or auto-generated keys

References