Buck2: Our open source build system

Wonder if they have examples for Java where maven and groovy are the main two tools.

Also, in case of our builds, we can benefit only so much from being faster during build phase because it is all the other bits like SonarQube scans, pushing artifacts to Artifactory, misc housekeeping bits, annoyingly slow Octopus deployments etc, that add most of the time to the long deployment cycle. Sometimes I think if a dedicated Go utility that takes care everything build related (parallelizing when possible) would make things faster; it will have the full picture after all. But then we will be reimplementing all the features of these various tools which is maybe ok at FB scale but would be too much for a smaller shop.

You can push those down too so they only operate on applicable code (and if caching is working, only the changed code) per-build, with a tool like bazel and probably buck2 - in addition to getting parallel execution per-target.