Design Principles of Federated GraphQL
summary
Apollo Federation (2019) becomes a principled model: subgraphs expose product‑centric types and share entities with multiple keys (SKU, UPC), composition happens at build time to produce a supergraph and prevent naming or dependency conflicts, and the working group proposes lookup and required directives to pass cross‑subgraph data. Composition validation enforces the “fundamental property” so every valid supergraph query has at least one resolvable execution plan. Changes are additive and adopters can migrate subgraph by subgraph.
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chapters (11)
- 0:00Introduction and context
- 1:54Defining federated GraphQL
- 4:45Challenges of schema mapping
- 7:38Limitations of naive approaches
- 9:33Core principles of federation
- 12:21The role of subgraphs
- 14:46Abstraction and governance
- 19:51Principled composition models
- 26:00The fundamental property
- 27:33Future and continuity
- 30:18Conclusion and panel setup
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