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msgpack's Introduction

MessagePack encoding for Golang Build Status

Supports:

  • Primitives, arrays, maps, structs, time.Time and interface{}.
  • Appengine *datastore.Key and datastore.Cursor.
  • CustomEncoder/CustomDecoder interfaces for custom encoding.
  • Extensions to encode type information.
  • Renaming fields via msgpack:"my_field_name".
  • Inlining struct fields via msgpack:",inline".
  • Omitting empty fields via msgpack:",omitempty".
  • Map keys sorting.
  • Encoding/decoding all structs as arrays or individual structs.
  • Simple but very fast and efficient queries.

API docs: http://godoc.org/gopkg.in/vmihailenco/msgpack.v2. Examples: http://godoc.org/gopkg.in/vmihailenco/msgpack.v2#pkg-examples.

Installation

Install:

go get gopkg.in/vmihailenco/msgpack.v2

Quickstart

func ExampleMarshal() {
	type Item struct {
		Foo string
	}

	b, err := msgpack.Marshal(&Item{Foo: "bar"})
	if err != nil {
		panic(err)
	}

	var item Item
	err = msgpack.Unmarshal(b, &item)
	if err != nil {
		panic(err)
	}
	fmt.Println(item.Foo)
	// Output: bar
}

Benchmark

BenchmarkStructVmihailencoMsgpack-4   	  200000	     12814 ns/op	    2128 B/op	      26 allocs/op
BenchmarkStructUgorjiGoMsgpack-4      	  100000	     17678 ns/op	    3616 B/op	      70 allocs/op
BenchmarkStructUgorjiGoCodec-4        	  100000	     19053 ns/op	    7346 B/op	      23 allocs/op
BenchmarkStructJSON-4                 	   20000	     69438 ns/op	    7864 B/op	      26 allocs/op
BenchmarkStructGOB-4                  	   10000	    104331 ns/op	   14664 B/op	     278 allocs/op

Howto

Please go through examples to get an idea how to use this package.

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