Enterprise Architecture

GraphQL Federation at Enterprise Scale: 2026 Patterns

5 min read

Patterns we use to make GraphQL federation work at 30+ subgraph scale without becoming a coordination nightmare.

  1. 01One subgraph per bounded context, never per team

    Bounded contexts are stable; team boundaries are not.

  2. 02Schema composition gate in CI

    Block PRs that break the supergraph.

  3. 03Persisted queries only in production

    Eliminates a class of injection + DOS attacks.

  4. 04Per-field cost analysis at the gateway

    Reject queries above a depth/complexity threshold.

Compliance-Grade RAG PipelineSOC 2 + audit-trail architectureDocuments14K pagesChunkingHierarchicalEmbeddingsVoyage-3pgvectorOn RDSRerankCohere v3Claude 3.7Citation-disciplinedAUDIT TRAIL · Every query → S3 Object Lock · 7-year retentionQuestion · Retrieved chunks (hashed) · Prompt version · Model version · Final answerZero audit findings · Q1 2026 SOC 296.4% answer satisfaction · 2,400+ queries/month · p95 retrieval 180ms
The compliance-grade RAG architecture Ohveda deployed for a regulated FinTech in Q4 2025.

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