mirror of
https://github.com/ii64/sonic.git
synced 2026-06-21 00:46:43 +08:00
171 lines
10 KiB
Markdown
171 lines
10 KiB
Markdown
# Sonic
|
||
|
||
A blazingly fast JSON serializing & deserializing library, accelerated by JIT (just-in-time compiling) and SIMD (single-instruction-multiple-data).
|
||
|
||
**WARNING: This is still in alpha stage, use with care !**
|
||
|
||
## Benchmarks
|
||
For **all sizes** of json and **all cases** of usage, **Sonic performs best**.
|
||
- [Small](https://github.com/bytedance/sonic/blob/main/testdata/small.go) (400B, 11 keys, 3 levels)
|
||
|
||
- [Large](https://github.com/bytedance/sonic/blob/main/testdata/twitter.json) (635KB, 10000+ key, 6 levels)
|
||
|
||
- [Medium](https://github.com/bytedance/sonic/blob/main/decoder/testdata_test.go#L19) (13KB, 300+ key, 6 levels)
|
||
|
||
For a 13KB TwitterJson, Sonic is **1.6x faster** than [json-iterator](https://github.com/json-iterator/go) in `decoding`, **2.7x faster** in `encoding`，**9.6x faster** in `searching`.
|
||
|
||
```powershell
|
||
goos: darwin
|
||
goarch: amd64
|
||
cpu: Intel(R) Core(TM) i9-9880H CPU @ 2.30GHz
|
||
BenchmarkEncoder_Generic_Sonic-16 100000 27844 ns/op 468.14 MB/s 14332 B/op 4 allocs/op
|
||
BenchmarkEncoder_Generic_JsonIter-16 100000 52179 ns/op 249.81 MB/s 13433 B/op 77 allocs/op
|
||
BenchmarkEncoder_Generic_GoJson-16 100000 47033 ns/op 277.15 MB/s 13129 B/op 39 allocs/op
|
||
BenchmarkEncoder_Generic_StdLib-16 100000 151394 ns/op 86.10 MB/s 48177 B/op 827 allocs/op
|
||
BenchmarkEncoder_Binding_Sonic-16 100000 7338 ns/op 1776.47 MB/s 14492 B/op 4 allocs/op
|
||
BenchmarkEncoder_Binding_JsonIter-16 100000 25365 ns/op 513.90 MB/s 9488 B/op 2 allocs/op
|
||
BenchmarkEncoder_Binding_GoJson-16 100000 10357 ns/op 1258.62 MB/s 9483 B/op 1 allocs/op
|
||
BenchmarkEncoder_Binding_StdLib-16 100000 20258 ns/op 643.44 MB/s 9480 B/op 1 allocs/op
|
||
BenchmarkEncoder_Parallel_Generic_Sonic-16 100000 5145 ns/op 2533.58 MB/s 10768 B/op 4 allocs/op
|
||
BenchmarkEncoder_Parallel_Generic_JsonIter-16 100000 11436 ns/op 1139.78 MB/s 13451 B/op 77 allocs/op
|
||
BenchmarkEncoder_Parallel_Generic_GoJson-16 100000 15274 ns/op 853.43 MB/s 13143 B/op 39 allocs/op
|
||
BenchmarkEncoder_Parallel_Generic_StdLib-16 100000 56236 ns/op 231.79 MB/s 48211 B/op 827 allocs/op
|
||
BenchmarkEncoder_Parallel_Binding_Sonic-16 100000 1821 ns/op 7159.40 MB/s 11262 B/op 4 allocs/op
|
||
BenchmarkEncoder_Parallel_Binding_JsonIter-16 100000 4559 ns/op 2859.24 MB/s 9487 B/op 2 allocs/op
|
||
BenchmarkEncoder_Parallel_Binding_GoJson-16 100000 2182 ns/op 5973.36 MB/s 9481 B/op 1 allocs/op
|
||
BenchmarkEncoder_Parallel_Binding_StdLib-16 100000 3867 ns/op 3370.58 MB/s 9477 B/op 1 allocs/op
|
||
|
||
BenchmarkDecoder_Generic_Sonic-16 100000 61092 ns/op 213.37 MB/s 49761 B/op 317 allocs/op
|
||
BenchmarkDecoder_Generic_StdLib-16 100000 158709 ns/op 82.13 MB/s 50899 B/op 772 allocs/op
|
||
BenchmarkDecoder_Generic_JsonIter-16 100000 113397 ns/op 114.95 MB/s 55789 B/op 1068 allocs/op
|
||
BenchmarkDecoder_Generic_GoJson-16 100000 108711 ns/op 119.91 MB/s 65679 B/op 944 allocs/op
|
||
BenchmarkDecoder_Binding_Sonic-16 100000 32614 ns/op 399.67 MB/s 25174 B/op 38 allocs/op
|
||
BenchmarkDecoder_Binding_StdLib-16 100000 150494 ns/op 86.61 MB/s 10560 B/op 207 allocs/op
|
||
BenchmarkDecoder_Binding_JsonIter-16 100000 43621 ns/op 298.83 MB/s 14674 B/op 385 allocs/op
|
||
BenchmarkDecoder_Binding_GoJson-16 100000 37525 ns/op 347.36 MB/s 22048 B/op 49 allocs/op
|
||
BenchmarkDecoder_Parallel_Generic_Sonic-16 100000 10581 ns/op 1231.89 MB/s 49636 B/op 317 allocs/op
|
||
BenchmarkDecoder_Parallel_Generic_StdLib-16 100000 67640 ns/op 192.71 MB/s 50909 B/op 772 allocs/op
|
||
BenchmarkDecoder_Parallel_Generic_JsonIter-16 100000 60982 ns/op 213.75 MB/s 55809 B/op 1068 allocs/op
|
||
BenchmarkDecoder_Parallel_Generic_GoJson-16 100000 51373 ns/op 253.73 MB/s 65718 B/op 945 allocs/op
|
||
BenchmarkDecoder_Parallel_Binding_Sonic-16 100000 6995 ns/op 1863.60 MB/s 24890 B/op 38 allocs/op
|
||
BenchmarkDecoder_Parallel_Binding_StdLib-16 100000 45269 ns/op 287.94 MB/s 10559 B/op 207 allocs/op
|
||
BenchmarkDecoder_Parallel_Binding_JsonIter-16 100000 18416 ns/op 707.82 MB/s 14677 B/op 385 allocs/op
|
||
BenchmarkDecoder_Parallel_Binding_GoJson-16 100000 17524 ns/op 743.85 MB/s 22132 B/op 49 allocs/op
|
||
|
||
BenchmarkSearchOne_Gjson-16 100000 8812 ns/op 1477.89 MB/s 0 B/op 0 allocs/op
|
||
BenchmarkSearchOne_Jsoniter-16 100000 55845 ns/op 233.20 MB/s 27936 B/op 647 allocs/op
|
||
BenchmarkSearchOne_Sonic-16 100000 10422 ns/op 1249.54 MB/s 0 B/op 0 allocs/op
|
||
BenchmarkSearchOne_Parallel_Gjson-16 100000 955.1 ns/op 13635.35 MB/s 0 B/op 0 allocs/op
|
||
BenchmarkSearchOne_Parallel_Jsoniter-16 100000 18864 ns/op 690.37 MB/s 27942 B/op 647 allocs/op
|
||
BenchmarkSearchOne_Parallel_Sonic-16 100000 1420 ns/op 9171.43 MB/s 234 B/op 0 allocs/op
|
||
```
|
||
More detail see [decoder/decoder_test.go](https://github.com/bytedance/sonic/blob/main/decoder/decoder_test.go), [encoder/encoder_test.go](https://github.com/bytedance/sonic/blob/main/encoder/encoder_test.go), [ast/search_test.go](https://github.com/bytedance/sonic/blob/main/ast/search_test.go), [ast/parser_test.go](https://github.com/bytedance/sonic/blob/main/ast/parser_test.go)
|
||
|
||
## Requirement
|
||
- Go 1.15/1.16
|
||
- Linux/darwin OS
|
||
- Amd64 CPU with AVX/AVX2 instruction set
|
||
|
||
## Usage
|
||
|
||
### Marshal/Unmarshal
|
||
|
||
The behaviors are mostly consistent with encoding/json, except some uncommon escaping and key sorting (see [issue4](https://github.com/bytedance/sonic/issues/4))
|
||
```go
|
||
import "github.com/bytedance/sonic"
|
||
|
||
// Marshal
|
||
output, err := sonic.Marshal(&data)
|
||
// Unmarshal
|
||
err := sonic.Unmarshal(input, &data)
|
||
```
|
||
|
||
### Get
|
||
|
||
Search partial json by given pathes, which must be non-negative integer or string or nil
|
||
```go
|
||
import "github.com/bytedance/sonic"
|
||
|
||
input := []byte(`{"key1":[{},{"key2":{"key3":[1,2,3]}}]}`)
|
||
|
||
// no path, returns entire json
|
||
root, err := sonic.Get(input)
|
||
raw := root.Raw() // == string(input)
|
||
|
||
// multiple pathes
|
||
root, err := sonic.Get(input, "key1", 1, "key2")
|
||
sub := root.Get("key3").Index(2).Int64() // == 3
|
||
```
|
||
Returned ast.Node supports：
|
||
- secondary search: `Get()`, `Index()`, `GetByPath()`
|
||
- type assignment: `Int64()`, `Float64()`, `String()`, `Number()`, `Bool()`, `Map()`, `Array()`
|
||
- children traversal: `Values()`, `Properties()`
|
||
- supplement: `Set()`, `SetByIndex()`, `Add()`, `Cap()`, `Len()`
|
||
|
||
### Use Number/Use Int64
|
||
```go
|
||
import "github.com/bytedance/sonic/decoder"
|
||
|
||
input := `1`
|
||
var data interface{}
|
||
|
||
// default float64
|
||
dc := decoder.NewDecoder(input)
|
||
dc.Decode(&data) // data == float64(1)
|
||
// use json.Number
|
||
dc = decoder.NewDecoder(input)
|
||
dc.UseNumber()
|
||
dc.Decode(&data) // data == json.Number("1")
|
||
// use int64
|
||
dc = decoder.NewDecoder(input)
|
||
dc.UseInt64()
|
||
dc.Decode(&data) // data == int64(1)
|
||
|
||
root, err := sonic.GetFromString(input)
|
||
// Get json.Number
|
||
jn := root.Number()
|
||
jm := root.InterfaceUseNumber().(json.Number) // jn == jm
|
||
// Get float64
|
||
fn := root.Float64()
|
||
fm := root.Interface().(float64) // jn == jm
|
||
```
|
||
|
||
## Tips
|
||
|
||
### Pretouch
|
||
Since Sonic uses JIT(just-in-time) compiling for decoder/encoder, huge schema may cause request-timeout. For better stability, we suggest to use `Pretouch()` for more-than-10000-field schema(struct) before `Marshal()/Unmarshal()`.
|
||
```go
|
||
import (
|
||
"reflect"
|
||
"github.com/bytedance/sonic"
|
||
)
|
||
|
||
func init() {
|
||
var v HugeStruct
|
||
err := sonic.Pretouch(reflect.TypeOf(v))
|
||
}
|
||
```
|
||
|
||
### Pass string or []byte?
|
||
For alignment to encoding/json, we provide API to pass `[]byte` as arguement, but the string-to-bytes copy is conducted at the same time considering safety, which may lose performance when origin json is huge. Therefore, you can use `UnmarshalString`, `GetFromString` to pass string, as long as your origin data is string or **nocopy-cast** is safe for your []byte.
|
||
|
||
### Avoid repeating work
|
||
`Get()` overlapping pathes from the same root may cause repeating parsing. Instead of using `Get()` several times, you can use parser and searcher together like this:
|
||
```go
|
||
import "github.com/bytedance/sonic"
|
||
|
||
root, err := sonic.GetFromString(_TwitterJson, "statuses", 3, "user")
|
||
a = root.GetByPath( "entities","description")
|
||
b = root.GetByPath( "entities","url")
|
||
c = root.GetByPath( "created_at")
|
||
```
|
||
No need to worry about the overlaping or overparsing of a, b and c, because the inner parser of their root is lazy-loaded.
|
||
### Better performance for generic deserializing
|
||
In most cases of fully-load generic json, `Unmarshal()` performs better than `ast.Loads()`. But if you only want to search a partial json and convert it into `interface{}` (or `map[string]interface{}`, `[]interface{}`), we advise you to combine `Get()` and `Unmarshal()`:
|
||
```go
|
||
import "github.com/bytedance/sonic"
|
||
|
||
node, err := sonic.GetFromString(_TwitterJson, "statuses", 3, "user")
|
||
var user interface{}
|
||
err = sonic.UnmarshalString(node.Raw(), &user)
|
||
```
|