Evolving Java for the Serverless Era with Micronaut
summary
Micronaut uses ahead‑of‑time compilation to remove runtime reflection and proxies, generate bean introspection and HTTP client implementations at compile time, and provide a Jackson module to avoid duplicate reflective caches, resulting in much lower memory use and faster cold starts. Native images via GraalVM/Substrate produce examples starting around 15 ms startup (and a full app compiled there boots in ~35 ms), ordinary uber jars are ~11 MB, and some users report halving cloud costs.
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chapters (14)
- 0:00Intro
- 1:26Java's Problems for Framework Developers
- 8:15Why is Reflection a Problem?
- 9:55Avoid Reflection!
- 12:57With Micronaut You Can Build
- 13:51So What is Micronaut? Really?
- 17:34Micronaut and GraalVM
- 21:24Micronaut for Serverless
- 22:18Micronaut's Solutions
- 30:39Annotation Mapper
- 39:11ApplicationContext
- 39:36Configuration Properties Type Safe Configuration
- 46:40Micronaut Startup and Memory
- 48:53Summary • Micronaut Provides an Awesome Set of Framework
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