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Go-Static-Forever

Serve files that never change

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If you can put a version string (commitish for instance) in the path of your static files, then the content served by the corresponding URLs is guaranteed to never change. A whole set of optimisations become possible.

  • If the request contains If-Modified-Since, return 304 without checking anything

  • Set the Expires to <forever> (<forever> defaulting to one year)

  • Set the Cache-Control header to public; max-age=<forever>; s-maxage=<forever>

  • Set the Last-Modified headers to <origin> (<origin> being 1970)

This handler is implemented as a wrapper around http.FileServer, and when the isDevelopment flag is set, http.FileServer is used directly.

Install

This package is "go-gettable", just do:

go get github.com/ant0ine/go-static-forever

Example

package main

import(
        "github.com/ant0ine/go-static-forever"
        "net/http"
)

func main() {
        handler := forever.NewStaticHandler(
                http.Dir("/static/"),   // FileSytem to serve
                "1234567",              // version string, like a commitish for instance
                nil,                    // "forever duration", defaults to one year
                false,                  // isDevelopement
        )

        http.ListenAndServe(":8080", handler)
}

Documentation

Copyright (c) 2013 Antoine Imbert

MIT License

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