Ephemeral CI environments discard state between builds, forcing Gradle to re-download distributions and regenerate runtime files on every run. This post benchmarks six startup-phase optimizations against a Spring Boot project baseline of 31.7s: using the -bin distribution instead of -all (saves 9.2s), leveraging official Gradle Docker images with the bundled Gradle binary (25.0s), setting up a local distribution mirror (25.9s), caching the wrapper dists directory (24.7s), caching generated-gradle-jars (30.0s), and caching wrapper plus generated-gradle-jars plus jars-9 together (24.0s, best result). The post also discusses the operational complexity of manual caching across multiple projects and CI systems, and introduces Develocity's Universal Cache and the setup-gradle GitHub Action as managed alternatives that eliminate the maintenance burden.
