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70 lines
2.8 KiB
Markdown
70 lines
2.8 KiB
Markdown
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# MessagePack encoding for Golang
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[](https://travis-ci.org/vmihailenco/msgpack)
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[](https://godoc.org/github.com/vmihailenco/msgpack)
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Supports:
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- Primitives, arrays, maps, structs, time.Time and interface{}.
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- Appengine *datastore.Key and datastore.Cursor.
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- [CustomEncoder](https://godoc.org/github.com/vmihailenco/msgpack#example-CustomEncoder)/CustomDecoder interfaces for custom encoding.
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- [Extensions](https://godoc.org/github.com/vmihailenco/msgpack#example-RegisterExt) to encode type information.
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- Renaming fields via `msgpack:"my_field_name"`.
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- Omitting individual empty fields via `msgpack:",omitempty"` tag or all [empty fields in a struct](https://godoc.org/github.com/vmihailenco/msgpack#example-Marshal--OmitEmpty).
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- [Map keys sorting](https://godoc.org/github.com/vmihailenco/msgpack#Encoder.SortMapKeys).
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- Encoding/decoding all [structs as arrays](https://godoc.org/github.com/vmihailenco/msgpack#Encoder.StructAsArray) or [individual structs](https://godoc.org/github.com/vmihailenco/msgpack#example-Marshal--AsArray).
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- [Encoder.UseJSONTag](https://godoc.org/github.com/vmihailenco/msgpack#Encoder.UseJSONTag) with [Decoder.UseJSONTag](https://godoc.org/github.com/vmihailenco/msgpack#Decoder.UseJSONTag) can turn msgpack into drop-in replacement for JSON.
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- Simple but very fast and efficient [queries](https://godoc.org/github.com/vmihailenco/msgpack#example-Decoder-Query).
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API docs: https://godoc.org/github.com/vmihailenco/msgpack.
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Examples: https://godoc.org/github.com/vmihailenco/msgpack#pkg-examples.
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## Installation
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Install:
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```shell
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go get -u github.com/vmihailenco/msgpack
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```
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## Quickstart
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```go
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func ExampleMarshal() {
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type Item struct {
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Foo string
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}
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b, err := msgpack.Marshal(&Item{Foo: "bar"})
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if err != nil {
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panic(err)
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}
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var item Item
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err = msgpack.Unmarshal(b, &item)
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if err != nil {
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panic(err)
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}
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fmt.Println(item.Foo)
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// Output: bar
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}
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```
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## Benchmark
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```
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BenchmarkStructVmihailencoMsgpack-4 200000 12814 ns/op 2128 B/op 26 allocs/op
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BenchmarkStructUgorjiGoMsgpack-4 100000 17678 ns/op 3616 B/op 70 allocs/op
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BenchmarkStructUgorjiGoCodec-4 100000 19053 ns/op 7346 B/op 23 allocs/op
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BenchmarkStructJSON-4 20000 69438 ns/op 7864 B/op 26 allocs/op
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BenchmarkStructGOB-4 10000 104331 ns/op 14664 B/op 278 allocs/op
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```
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## Howto
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Please go through [examples](https://godoc.org/github.com/vmihailenco/msgpack#pkg-examples) to get an idea how to use this package.
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## See also
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- [Golang PostgreSQL ORM](https://github.com/go-pg/pg)
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- [Golang message task queue](https://github.com/go-msgqueue/msgqueue)
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