I dislike Go intensely, but nothing else currently fits its niche as well. For a large or complex codebase, I nominate Cloud Foundry. About 1.5M SLOC of Go (1.

I dislike Go intensely, but nothing else currently fits its niche as well. For a large or complex codebase, I nominate Cloud Foundry. About 1.5M SLOC of Go (1.8M LOC) in the main cloudfoundry repos[0]. Almost all new development is in Go. There's still about 370KSLOC (470K LOC) of Ruby. Eventually most of it will be replaced, which will drive that Go codebase up a lot. Disclosure: I work for Pivotal. Lots of my colleagues wrote most of that Go. I for one pity them, but they seem to have enjoyed it. [0] https://www.openhub.net/p/cloudfoundry https://www.openhub.net/p/cloudfoundry