go-json

Fast JSON encoder/decoder compatible with encoding/json for Go It's a fork from github.com/goccy/go-json

Defference from github.com/goccy/go-json

• go 1.26
• long/short mode (long optimized for big buffers, short for small buffers)

    // long
    json.UnmarshalWithOption(src, dst, json.DecodeLongBodyMode())
    json.MarshalWithOption(x, json.EncodeLongBodyMode())
    // short
    json.UnmarshalWithOption(src, dst, json.DecodeShortBodyMode())
    json.MarshalWithOption(x, json.EncodeShortBodyMode())
    // by default: autodetect
    json.Unmarshal(src, dst)
    json.Marshal(x)

• time formatter

    json.MarshalWithOption(v, json.EncodeTimeFormat("2006-01-02 15:04:05")) // all time.Time in "v" will be formatted with this
    json.UnmarshalWithOption(data, &v, json.DecodeTimeFormats("2006-01-02 15:04:05", "2006-01-02")) // all time.Time will be deserialized with format "2006-01-02 15:04:05", if fails => format "2006-01-02"

• MarshalString/UnmarshalString: same as MarshalWithOption/UnmarshalWithOption, but works with string instead of []byte
• Required mode: (if required fields is missing Unmarshal returns error) Field is optional if omitempty or type is pointer. Otherwise it's required.

  json.UnmarshalWithOption(data, json.DecodeRequire())

• Assembler optimizations for arm64 and amd64
• minor optimizations

Features

• Drop-in replacement of encoding/json
• Fast ( See Benchmark section )
• Flexible customization with options
• Coloring the encoded string
• Can propagate context.Context to MarshalJSON or UnmarshalJSON
• Can dynamically filter the fields of the structure type-safely

How to use

Replace import statement from encoding/json to github.com/asvedr/go-json

-import "encoding/json"
+import "github.com/asvedr/go-json"