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Languages & runtimes · #graphql
Learn how GraphQL DataLoader batches resolver calls into single database queries to stop N+1 overload.
When Apollo Client returns PersistedQueryNotFound or PersistedQueryNotSupported, the server can’t process the query ID. This guide walks through the common causes, diagnostic steps, and fixes to get your persisted queries working again.
Control which fields a GraphQL query returns using Boolean variables and the @skip and @include directives, without changing the query structure.
Configure Apollo Client's InMemoryCache with keyArgs:false and a merge function to append GraphQL connection pages without refetching the first page.
Learn how GraphQL persisted queries replace large query bodies with short hashes, reducing bandwidth and boosting HTTP caching, with a concrete Apollo Server/Client setup and verification steps.
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.
Replace manual srcset construction in Gatsby with the gatsbyImageData resolver, which generates WebP, AVIF, and resized variants during gatsby build.
Offset pagination skips items and slows deep pages. Learn how Relay Connections use opaque cursors and deterministic ordering for stable GraphQL list traversal.
Learn how to use GraphQL’s @include and @skip directives to fetch fields only when a client‑side boolean variable matches a condition, reducing payload and server work.
apollographql
gatsby