json-iterator

go

faster than DOM, more usable than SAX/StAX

string

func Benchmark_jsoniter_string(b *testing.B) {
	for n := 0; n < b.N; n++ {
		lexer := NewLexerWithArray([]byte(`"\ud83d\udc4a"`))
		lexer.LexString()
	}
}

10000000 140 ns/op

func Benchmark_json_string(b *testing.B) {
	for n := 0; n < b.N; n++ {
		result := ""
		json.Unmarshal([]byte(`"\ud83d\udc4a"`), &result)
	}
}
````

2000000	       710 ns/op (5x slower)

# int

func Benchmark_jsoniter_int(b *testing.B) {

for n := 0; n < b.N; n++ {
    lexer := NewLexerWithArray([]byte(`-100`))
    lexer.LexInt64()
}

}

30000000	        60.1 ns/op

func Benchmark_json_int(b *testing.B) {

for n := 0; n < b.N; n++ {
    result := int64(0)
    json.Unmarshal([]byte(`-100`), &result)
}

} ```

3000000 505 ns/op (8x slower)