Curious about deno's development stage: can the brave already run it in production, or there are probably too many breaking changes in the pipe that it's better to wait?
The brave? Sure - but there will likely be breaking changes. I actually run a small deno server in production for a non critical service and it's been working out fine :]
Check out the benchmarks. I'm pretty sure normal usage (aka actual HTTP server, not specialized use cases just for benchmarks) is quite a bit slower than node.js