An API refined over 18 months
summary
Refined is used to add precise compile-time and runtime checks to Scala REST APIs by extracting Refined predicates from case classes and using macros plus Play integration to generate JSON Schema and Swagger/OpenAPI docs. The library demonstrates request validation that returns 400 for bad bodies, enriches Play error responses with expected schemas, and serves an OpenAPI document; it’s implemented to compile on Scala 2.13 as a working proof of concept.
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chapters (9)
- 0:00API introduction
- 2:25Good API definition
- 7:07Riz Fine library
- 10:41Improving REST APIs
- 12:04Executable documentation
- 17:51Technical demo
- 28:55Data validation
- 34:09Use cases and benefits
- 36:23Q&A
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