json库进行测评。那本人为什么还要继续进行这一次测评呢?| 序号 | 类库 | 地址 | 备注 | |
|---|---|---|---|---|
| 1 | encoding/json | Golan | ||
| 2 | easyjson | github.com/mailru/easyjson | ||
| 3 | ffjson | github.com/mailru/easyjson | ||
| 4 | iterator/json | github.com/json-iterator/go | 
主要是针对上述的类型进行,本人采用了对不同的类库使用不同的结构体(仅仅是结构体名称不同,字段顺序和类型一样)。
环境为MacBook Pro(Core i5处理器/8GB内存)go1.8.3 darwin/amd64
bench代码如下:
package jsonbench
import (
    "encoding/gob"
    "encoding/json"
    "github.com/json-iterator/go"
    "github.com/mailru/easyjson"
    "github.com/pquerna/ffjson/ffjson"
    "testing"
)
var (
    iterator = jsoniter.ConfigCompatibleWithStandardLibrary
    // easyjson
    as = AgentService{
        ServiceName:    "kaleidoscope_api",
        Version:        "1517558949087295000_1298498081",
        ServiceId:      "kaleidoscope_kaleidoscope.dev.igetget.com_v1.2",
        Address:        "kaleidoscope.dev.igetget.com",
        Port:           80,
        Metadata:       map[string]string{},
        ConnectTimeOut: 1000,
        ConnectType:    "LONG",
        ReadTimeOut:    1000,
        WriteTimeOut:   1000,
        Protocol:       "HTTP",
        Balance:        "Random",
        Idcs:           "hu,hd,hn",
        Converter:      "json",
        Retry:          3,
    }
    service            = as.ToService()
    asBytes, _         = json.Marshal(as)
    serviceBytes, _    = json.Marshal(service)
    asStr              = string(asBytes)
    serviceStr         = string(serviceBytes)
    asGonBytes, _      = GobEncode(as)
    serviceGonBytes, _ = GobEncode(service)
    // std
    asstd = AgentServiceSTD{
        ServiceName:    "kaleidoscope_api",
        Version:        "1517558949087295000_1298498081",
        ServiceId:      "kaleidoscope_kaleidoscope.dev.igetget.com_v1.2",
        Address:        "kaleidoscope.dev.igetget.com",
        Port:           80,
        Metadata:       map[string]string{},
        ConnectTimeOut: 1000,
        ConnectType:    "LONG",
        ReadTimeOut:    1000,
        WriteTimeOut:   1000,
        Protocol:       "HTTP",
        Balance:        "Random",
        Idcs:           "hu,hd,hn",
        Converter:      "json",
        Retry:          3,
    }
    servicestd            = asstd.ToServiceSTD()
    asBytesstd, _         = json.Marshal(asstd)
    serviceBytesstd, _    = json.Marshal(servicestd)
    asStrstd              = string(asBytesstd)
    serviceStrstd         = string(serviceBytesstd)
    asGonBytesstd, _      = GobEncode(asstd)
    serviceGonBytesstd, _ = GobEncode(servicestd)
)
// go test -bench=".*"
func init() {
    gob.Register(AgentService{})
}
func Benchmark_STD_Marshal1(b *testing.B) {
    for i := 0; i < b.N*10; i++ {
        _, err := json.Marshal(asstd)
        if err != nil {
            b.Error(err)
        }
    }
}
func Benchmark_STD_Marshal2(b *testing.B) {
    for i := 0; i < b.N*10; i++ {
        _, err := json.Marshal(servicestd)
        if err != nil {
            b.Error(err)
        }
    }
}
func Benchmark_EASYJSON_STD_Marshal1(b *testing.B) {
    for i := 0; i < b.N*10; i++ {
        _, err := json.Marshal(as)
        if err != nil {
            b.Error(err)
        }
    }
}
func Benchmark_EASYJSON_STD_Marshal2(b *testing.B) {
    for i := 0; i < b.N*10; i++ {
        _, err := json.Marshal(service)
        if err != nil {
            b.Error(err)
        }
    }
}
func Benchmark_EASYJSON_Marshal1(b *testing.B) {
    for i := 0; i < b.N*10; i++ {
        _, err := easyjson.Marshal(as)
        if err != nil {
            b.Error(err)
        }
    }
}
func Benchmark_EASYJSON_Marshal2(b *testing.B) {
    for i := 0; i < b.N*10; i++ {
        _, err := easyjson.Marshal(service)
        if err != nil {
            b.Error(err)
        }
    }
}
//
func Benchmark_ITERATOR_Marshal1(b *testing.B) {
    for i := 0; i < b.N*10; i++ {
        _, err := iterator.Marshal(asstd)
        if err != nil {
            b.Error(err)
        }
    }
}
func Benchmark_ITERATOR_Marshal2(b *testing.B) {
    for i := 0; i < b.N*10; i++ {
        _, err := iterator.Marshal(servicestd)
        if err != nil {
            b.Error(err)
        }
    }
}
func Benchmark_FFJSON_Marshal1(b *testing.B) {
    for i := 0; i < b.N*10; i++ {
        _, err := ffjson.Marshal(asstd)
        if err != nil {
            b.Error(err)
        }
    }
}
func Benchmark_FFJSON_Marshal2(b *testing.B) {
    for i := 0; i < b.N*10; i++ {
        _, err := ffjson.Marshal(servicestd)
        if err != nil {
            b.Error(err)
        }
    }
}
func Benchmark_GOB_Encode1(b *testing.B) {
    for i := 0; i < b.N*10; i++ {
        as.Port = i
        GobEncode(as)
    }
}
func Benchmark_GOB_Encode2(b *testing.B) {
    for i := 0; i < b.N*10; i++ {
        GobEncode(service)
    }
}
func Benchmark_STD_Unmarshal1(b *testing.B) {
    tmp := AgentServiceSTD{}
    for i := 0; i < b.N*10; i++ {
        as.Port = i
        err := json.Unmarshal(asBytesstd, &tmp)
        if err != nil {
            b.Error(err)
        }
    }
}
func Benchmark_STD_Unmarshal2(b *testing.B) {
    tmp := ServiceSTD{}
    for i := 0; i < b.N*10; i++ {
        as.Port = i
        err := json.Unmarshal(serviceBytesstd, &tmp)
        if err != nil {
            b.Error(err)
        }
    }
}
func Benchmark_EASYJSON_STD_Unmarshal1(b *testing.B) {
    tmp := AgentService{}
    for i := 0; i < b.N*10; i++ {
        as.Port = i
        err := json.Unmarshal(asBytes, &tmp)
        if err != nil {
            b.Error(err)
        }
    }
}
func Benchmark_EASYJSON_STD_Unmarshal2(b *testing.B) {
    tmp := Service{}
    for i := 0; i < b.N*10; i++ {
        as.Port = i
        err := json.Unmarshal(serviceBytes, &tmp)
        if err != nil {
            b.Error(err)
        }
    }
}
func Benchmark_EASYJSON_Unmarshal1(b *testing.B) {
    tmp := AgentService{}
    for i := 0; i < b.N*10; i++ {
        as.Port = i
        err := easyjson.Unmarshal(asBytes, &tmp)
        if err != nil {
            b.Error(err)
        }
    }
}
func Benchmark_EASYJSON_Unmarshal2(b *testing.B) {
    tmp := Service{}
    for i := 0; i < b.N*10; i++ {
        as.Port = i
        err := easyjson.Unmarshal(serviceBytes, &tmp)
        if err != nil {
            b.Error(err)
        }
    }
}
func Benchmark_ITERATOR_UnMarshal1(b *testing.B) {
    tmp := ServiceSTD{}
    for i := 0; i < b.N*10; i++ {
        as.Port = i
        err := iterator.Unmarshal(serviceBytesstd, &tmp)
        if err != nil {
            b.Error(err)
        }
    }
}
func Benchmark_ITERATOR_UnMarshal2(b *testing.B) {
    tmp := ServiceSTD{}
    for i := 0; i < b.N*10; i++ {
        as.Port = i
        err := iterator.Unmarshal(serviceBytesstd, &tmp)
        if err != nil {
            b.Error(err)
        }
    }
}
func Benchmark_FFJSON_UnMarshal1(b *testing.B) {
    tmp := ServiceSTD{}
    for i := 0; i < b.N*10; i++ {
        as.Port = i
        err := ffjson.Unmarshal(serviceBytesstd, &tmp)
        if err != nil {
            b.Error(err)
        }
    }
}
func Benchmark_FFJSON_UnMarshal2(b *testing.B) {
    tmp := ServiceSTD{}
    for i := 0; i < b.N*10; i++ {
        as.Port = i
        err := ffjson.Unmarshal(serviceBytesstd, &tmp)
        if err != nil {
            b.Error(err)
        }
    }
}
func Benchmark_GOB_Decode1(b *testing.B) {
    tmp := AgentService{}
    for i := 0; i < b.N*10; i++ {
        as.Port = i
        GobDecode(asGonBytes, &tmp)
    }
}
func Benchmark_GOB_Decode2(b *testing.B) {
    tmp := Service{}
    for i := 0; i < b.N*10; i++ {
        as.Port = i
        GobDecode(serviceGonBytes, &tmp)
    }
}
执行命令:
go test -bench=".*"
测评结果;
$ go test -bench=".*"
Benchmark_STD_Marshal1-4                   50000             31224 ns/op
Benchmark_STD_Marshal2-4                   30000             49598 ns/op
Benchmark_EASYJSON_STD_Marshal1-4          30000             45778 ns/op
Benchmark_EASYJSON_STD_Marshal2-4          30000             50440 ns/op
Benchmark_EASYJSON_Marshal1-4             100000             14387 ns/op
Benchmark_EASYJSON_Marshal2-4             100000             16009 ns/op
Benchmark_ITERATOR_Marshal1-4             100000             14899 ns/op
Benchmark_ITERATOR_Marshal2-4             100000             21629 ns/op
Benchmark_FFJSON_Marshal1-4                50000             31633 ns/op
Benchmark_FFJSON_Marshal2-4                30000             51668 ns/op
Benchmark_GOB_Encode1-4                    20000             97099 ns/op
Benchmark_GOB_Encode2-4                    10000            153158 ns/op
Benchmark_STD_Unmarshal1-4                 20000             89211 ns/op
Benchmark_STD_Unmarshal2-4                 20000             76442 ns/op
Benchmark_EASYJSON_STD_Unmarshal1-4        30000             57695 ns/op
Benchmark_EASYJSON_STD_Unmarshal2-4        20000             66269 ns/op
Benchmark_EASYJSON_Unmarshal1-4           100000             19028 ns/op
Benchmark_EASYJSON_Unmarshal2-4           100000             22035 ns/op
Benchmark_ITERATOR_UnMarshal1-4            50000             35942 ns/op
Benchmark_ITERATOR_UnMarshal2-4            50000             36462 ns/op
Benchmark_FFJSON_UnMarshal1-4              20000             80290 ns/op
Benchmark_FFJSON_UnMarshal2-4              20000             78431 ns/op
Benchmark_GOB_Decode1-4                     3000            377698 ns/op
Benchmark_GOB_Decode2-4                     3000            463472 ns/op
PASS
ok      studygo/jsonbench       49.174s
easyjson有一个坑,从代码中可以看到Benchmark_EASYJSON_STD_*的方法,是因为easyjson生成的代码中已经包含了MarshalJSON和UnmarshalJSON方法,那么只要对这些结构体执行json.marshalJSON和json.UnmarshalJSON都会默认调用easyjson生成的方法。本人运行多次,都会发现调用easyjson生成的MarshalJSON方法比标准库中的慢一些达到50%左右,但是调用easyjson生成的UnmarshalJSON比标准库的快一些大概20%。easyjson速度虽然比较快,但也是存在一些不适合的场景,比如如果需要对interface接口进行序列化时候。所以建议采用easyjson与标准库结合。原文:http://blog.51cto.com/qiangmzsx/2070603