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Install On Request - Dead simple docker safe code reloading for golang

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ior

ior

usage

go get github.com/vektah/ior

cd $GOPATH/src/github.com/you/yourapp
ior -listen ":1234" -- [args passed through to your app]

What it does

  1. Wait for a request.
  2. Hashes all go files, excluding vendor, and other common large directories
  3. If the hash changes, do a go install, show errors if it fails otherwise restart the server

Thats it. No inotify, no fsevents, no polling, no CPU chewing. 100% docker-machine friendly. 100% nfs friendly.

How long does it take really?

On a project with ~30k lines across ~300 files it adds about 50ms to every request, this is just the time it takes to hash.

Because its using go install rather than go build it also leverages the pkg cache, so small changes are pretty quick to compile.

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