Developer experience in a modern Java framework
summary
Micronaut claims and demos actual results: sub-second startup for a blank app (344 ms) and a GraalVM native image starting in milliseconds (16 ms), compile-time dependency injection and checks via Java annotation processing (no runtime reflection), compile-time validation of path variables, hot-restart (fast process restart) during edits, declarative HTTP clients sharing a Java interface so client and server fail to compile if signatures diverge, test runs that auto-start Postgres via Micronaut Test Resources and Testcontainers in ~2–3s (functional tests ~200 ms), bean replacement in tests, and built-in packaging to JAR, Docker, or native images.
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chapters (12)
- 0:00Introduction
- 2:30Micronaut overview
- 4:08Ahead-of-time compilation
- 7:42Technical architecture
- 10:12Building a controller
- 13:14Validation and configuration
- 17:37Dependency injection
- 22:20Testing strategies
- 27:16Client and mocking
- 32:38Database integration
- 37:23Packaging and deployment
- 40:20Q&A session
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