https://www.sinhnguyen.dev/tags/openapi/Recent content in Openapi on Sang Sinh NGUYENHugoen-usTue, 10 Nov 2026 00:00:01 +0000https://www.sinhnguyen.dev/blog/contract-first-part-2-inside-the-generator/Tue, 10 Nov 2026 00:00:01 +0000https://www.sinhnguyen.dev/blog/contract-first-part-2-inside-the-generator/Opening the code generator behind platform.yaml: how an AsyncAPI schema becomes Java models and the delegate interface we implement, plus a playground you can type into.https://www.sinhnguyen.dev/blog/contract-first-part-1-spec-writes-the-code/Tue, 10 Nov 2026 00:00:00 +0000https://www.sinhnguyen.dev/blog/contract-first-part-1-spec-writes-the-code/How we moved Lambda ports onto AsyncAPI and OpenAPI contracts, declared them in one platform.yaml, and let a generator write the event models, SQS consumers and HTTP clients we used to write by hand.