Achieving Fast Inner Dev Loops with Gradle: Configuration Cache and Beyond

Gradle engineers explain how to dramatically speed up inner developer loops by addressing the configuration phase bottleneck in large builds. The Configuration Cache caches the entire work graph so Gradle skips reconfiguration when inputs haven't changed — one company reported saving 4 years of engineering time annually. The experimental Isolated Projects feature goes further by enforcing project isolation, enabling parallel and partial project configuration, with benchmarks showing 1.3x–2.5x speedups for 50–100 subproject builds and faster Android Studio/IntelliJ IDE syncs. Configuration Cache is now the preferred mode in Gradle 9 and will become the default in Gradle 10. The post also covers using Develocity for build observability, cache hit tracking, and troubleshooting.