Zero-overhead native Go support

[tj]

Currently there's a local proxy Up Proxy -> Your App, however with native Go we could now let you run native Go apps without the proxy, by embedding it, something like:

func main() {
  up.Handle(h)
}

Honestly I think the latency benefits would be negligible, but it's worth investigating. Another benefit would be that you can shave ~3mb off your deploy size (and time).

TL;DR this keeps all of the Up proxy features, with none of the overhead.

• [ ] remove Runtime? decide how to signal native support
• [ ] add nicer public interface to "github.com/apex/up/platform/lambda/proxy/golang"
• [ ] add config to opt-in and/or detect (too much magic probably haha)
• [ ] add examples
• [ ] ensure shim is still used by default
• [ ] ensure up start respects this
• [ ] QA
• [ ] docs (mention missing relay features for logs etc)

[franciscocpg]

Maybe this could help somehow? https://github.com/akrylysov/algnhsa

[tj]

@franciscocpg https://github.com/apex/gateway — looks similar haha. Honestly it's not a big win over using the shim. I'd still like to add it, but it's not a huge priority.

[franciscocpg]

ops, didn't know it :raised_hands:

[tshak]

Unless there's something incredibly wrong with how I've implemented golang support, the differences are not significant. https://gist.github.com/tshak/7fa2c7803ae5a27f66441752d1bd8e45