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Title: Reduce allocations in Async$Many and ResultPath on execution hot path by andimarek · Pull Request #4252 · graphql-java/graphql-java · GitHub

Open Graph Title: Reduce allocations in Async$Many and ResultPath on execution hot path by andimarek · Pull Request #4252 · graphql-java/graphql-java

X Title: Reduce allocations in Async$Many and ResultPath on execution hot path by andimarek · Pull Request #4252 · graphql-java/graphql-java

Description: Summary Three execution hot-path optimizations identified via async-profiler: Async$Many.materialisedList(): Replace ArrayList copy with zero-copy Arrays.asList() wrapper — eliminates one allocation + array copy per selection set on the synchronous execution path ResultPath.toStringValue: Make lazy (computed on first toString() call) — the string representation is never read during normal execution, only for error reporting GraphQLCodeRegistry DataFetcher lookup: Add public getDataFetcher(String, String, GraphQLFieldDefinition) overload using a nested Map>> for fast lookup by type/field name strings, avoiding creation of a throwaway FieldCoordinates object on every field fetch (~54 KB/op reduction in allocations) Also adds ExecutionBenchmark JMH benchmark and async-profiler support to build.gradle. Benchmark results Existing benchmarks (master vs optimized) Benchmark Metric Master Optimized Change SimpleQueryBenchmark throughput 1929 ops/s 2379 ops/s +23% SimpleQueryBenchmark avg time 0.538 ms/op 0.421 ms/op -22% TwitterBenchmark throughput 167 ops/s 232 ops/s +39% TwitterBenchmark avg time 6.0 ms/op 4.3 ms/op -28% ExecutionBenchmark (new — only on optimized branch) Variant Throughput Avg time Baseline 3414 ops/s 0.294 ms/op DataLoader 2009 ops/s 0.512 ms/op Test plan Full test suite passes (./gradlew test) JMH benchmarks run successfully Arrays.asList returns a fixed-size list — verified no consumer mutates the returned list Lazy ResultPath.toString() verified safe: same pattern as hashCode() (racy single-check idiom on immutable data) CodeRegistry fast-path produces identical results to existing getDataFetcher — same lookup logic, different key structure 🤖 Generated with Claude Code

Open Graph Description: Summary Three execution hot-path optimizations identified via async-profiler: Async$Many.materialisedList(): Replace ArrayList copy with zero-copy Arrays.asList() wrapper — eliminates one allocati...

X Description: Summary Three execution hot-path optimizations identified via async-profiler: Async$Many.materialisedList(): Replace ArrayList copy with zero-copy Arrays.asList() wrapper — eliminates one allocati...

Opengraph URL: https://github.com/graphql-java/graphql-java/pull/4252

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acc6c10 Avoid redundant array copy in Async$Many for synchronous execution path andimarek Feb 19, 2026 https://github.com/graphql-java/graphql-java/pull/4252/commits/acc6c1067ae70e5c70674e37113a3905004c8d65
45d13fc Make ResultPath.toStringValue lazy and avoid intermediate string allo… andimarek Feb 19, 2026 https://github.com/graphql-java/graphql-java/pull/4252/commits/45d13fcc57f03e997c9fdea87f9f9e3b94753f54
659fe34 Add fast-path DataFetcher lookup avoiding FieldCoordinates allocation andimarek Feb 19, 2026 https://github.com/graphql-java/graphql-java/pull/4252/commits/659fe34179f6c41d9777467ca08d0d42b306effc
9a54c18 Merge remote-tracking branch 'origin/master' into async-many-material… andimarek Feb 19, 2026 https://github.com/graphql-java/graphql-java/pull/4252/commits/9a54c1810ee7e362f3f5b01618e22707478ee360
4011983 Make fast-path getDataFetcher public and document performance benefit andimarek Feb 19, 2026 https://github.com/graphql-java/graphql-java/pull/4252/commits/40119835c84b3ecf83b2d6a927f02c1361e1b6a8
c52498b Simplify ResultPath.initString() — inlining is unnecessary with lazy … andimarek Feb 19, 2026 https://github.com/graphql-java/graphql-java/pull/4252/commits/c52498b7b17af69db69538d98cb998b64e348924
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