Apollo Federation @requires and @provides: cross-subgraph entity resolution
The Apollo Router uses @requires and @provides directives to compose cross-subgraph query plans, fetching providing fields before requiring resolvers.
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Build a Unified GraphQL API with Apollo Federation: A Step‑by‑Step Guide
Learn how to stitch multiple GraphQL services into one unified API with Apollo Federation. Follow a step‑by‑step guide to set up subgraphs, configure the gateway, validate entity resolution, and tune performance with caching.
Reducing Perceived Latency with the @defer Directive in Apollo GraphQL
Stop letting slow resolvers block your entire UI. Learn how to use the @defer directive in Apollo GraphQL to stream partial results and improve perceived performance.
Implementing Apollo Federation: From Subgraphs to a Unified GraphQL Supergraph
Learn how to compose multiple GraphQL services with Apollo Federation, define shared entities, validate schemas, and deploy a gateway that stitches a supergraph for modular, team‑agnostic development.
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