spring-boot-demo

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asmhatre baff043748 Add graphql-dataloader: Spring GraphQL 2.0 DataLoader batching vs naive N+1, and non-null propagation on a dangling FK

- naive @SchemaMapping resolver: 6 statements (5 books/5 authors), 21 statements (20 books/5 authors)
- batched @BatchMapping resolver: flat 2 statements in both cases, via DataLoader + .distinct()
- dangling authorId nulls the entire GraphQL response via non-null propagation, byte-identical under both resolver strategies
- 6-test suite over real HTTP against a live embedded Tomcat instance, SQL captured via a JDK dynamic proxy (StatementLoggingDataSource, reused from sdjpa4-demo)
- docs/05: two Boot 4.1 packaging changes hit along the way (DataSourceAutoConfiguration's new package, Jackson 3 by default)
- root README: add row for graphql-dataloader; fix openapi-versioning's placeholder link now that post 7477 is live

2026-09-17 19:57:41 +00:00

output

Add graphql-dataloader: Spring GraphQL 2.0 DataLoader batching vs naive N+1, and non-null propagation on a dangling FK

2026-09-17 19:57:41 +00:00

01-schema-and-resolvers.md

Add graphql-dataloader: Spring GraphQL 2.0 DataLoader batching vs naive N+1, and non-null propagation on a dangling FK

2026-09-17 19:57:41 +00:00

02-the-n-plus-one-problem.md

Add graphql-dataloader: Spring GraphQL 2.0 DataLoader batching vs naive N+1, and non-null propagation on a dangling FK

2026-09-17 19:57:41 +00:00

03-the-batchmapping-fix.md

Add graphql-dataloader: Spring GraphQL 2.0 DataLoader batching vs naive N+1, and non-null propagation on a dangling FK