Taming the Kotlin Compiler

on YouTube ↗35m

" summary

Measured command-line runs compile 1–5,000 dummy sources and show kotlinc much slower than javac, but using Gradle plus the Kotlin daemon and Gradle daemon bounds Kotlin’s penalty near javac. Real-world tests use Cash App’s Wire-generated protos and kapt stubs; Gradle --profile and Kotlin build report flags identify slow tasks. Incremental compilation exists but a non-incremental compilation bug (absolute paths break remote cache) plus lack of Java-style compilation avoidance for Kotlin cause unexpected full rebuilds; FS-watch confirmed generated stub folders are repeatedly rewritten.

AI-written summary · about

" chapters (6)

1. 0:00Start
2. 15:25Why are my builds slow?
3. 19:01Build cache
4. 22:33Noncremental compilation
5. 25:25Compilation avoidance
6. 29:24How do I debug my builds?

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