> If you rewrite it anyway, might as well use something else than ruby.

You just said the company is a rails shop, why would you force a new language on everyone who already invested in understanding ruby?

Because people know Ruby well, including use cases that it's not a good fit for. We use Go in other places, too.

Why not something like Sinatra so it’s easy to prototype and move on from there if it’s still not good enough? What you’re describing isn’t that complex and the base Ruby language is so much better than Go.