Mill a JVM build tool based on pure functional programming
summary
Claim: Mill makes JVM builds far faster and more navigable. Concrete evidence: Netty compiles 500k lines in 9 seconds vs 50 seconds with Maven and typical Gradle speedups around 3x. Tools and techniques: method-based tasks, pure-functional methods not global mutable state, per-task caching and per-task unique output folders that avoid filesystem stomping. Example built: a line-count resource written as a simple task that integrates into resources with no plugin API. Result: faster parallel builds, selective testing, IDE jump-to-definition and usable incremental caching.
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chapters (12)
- 0:00Introduction
- 0:44What Mill is
- 2:53Problems with Java build tools
- 5:24Poor IDE support
- 8:33Build tool programmability
- 12:23Why improve Java build tools
- 13:46Mill as solution
- 15:54Mill’s performance
- 16:14Mill’s IDE support
- 18:22Mill’s programmability
- 20:52Mill’s design
- 24:01Summary
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