Optimized JSON for Go is a high performance parser with a variety of additional JSON tools.
- Fast JSON parser. Check out the cmd/benchmarks app in this repo.
- Full JSONPath implemenation that operates on simple types as well as structs.
- Generic types. Not the proposed golang generics but type safe JSON elements.
- Fast JSON validator (4 times faster with io.Reader).
- Fast JSON writer with a sort option (1.6 times faster).
- Simple data builders using a push and pop approach.
- Object encoding and decoding using an approach similar to that used with Oj for Ruby.
- Simple Encoding Notation, a lazy way to write JSON omitting commas and quotes.
A basic Parse:
obj, err := oj.ParseString(`{
"a":[
{"x":1,"y":2,"z":3},
{"x":2,"y":4,"z":6}
]
}`)Using JSONPath expressions:
x, err := jp.ParseString("a[?(@.x > 1)].y")
ys := x.Get(obj)
// returns [4]The oj command (cmd/oj) which uses JSON path for filtering and extracting JSON elements. It also includes sorting, reformatting, and colorizing options.
$ oj -m "(@.name == 'Pete')" myfile.json
go get github.com/ohler55/ojg
go get github.com/ohler55/ojg/cmd/oj
or just import in your .go files.
import (
"github.com/ohler55/ojg/alt"
"github.com/ohler55/ojg/gen"
"github.com/ohler55/ojg/jp"
"github.com/ohler55/ojg/oj"
"github.com/ohler55/ojg/sen"
)
To build and install the oj application:
go install ./...
Higher numbers in parenthesis are better.
Parse string/[]byte
json.Unmarshal 42144 ns/op 17982 B/op 336 allocs/op
oj.Parse 24508 ns/op 18816 B/op 433 allocs/op
gen.Parse 23930 ns/op 18815 B/op 433 allocs/op
sen.Parse 25666 ns/op 18770 B/op 427 allocs/op
gen █████████████████▌ 1.76
oj █████████████████▏ 1.72
sen ████████████████▍ 1.64
json ▓▓▓▓▓▓▓▓▓▓ 1.00
Parse io.Reader
json.Decode 52568 ns/op 32658 B/op 346 allocs/op
oj.ParseReader 27764 ns/op 22911 B/op 434 allocs/op
gen.ParseReder 27554 ns/op 22912 B/op 434 allocs/op
sen.ParseReader 27654 ns/op 22912 B/op 434 allocs/op
gen ███████████████████ 1.91
sen ███████████████████ 1.90
oj ██████████████████▉ 1.89
json ▓▓▓▓▓▓▓▓▓▓ 1.00
to JSON with indentation
json.Marshal 72788 ns/op 27326 B/op 352 allocs/op
oj.JSON 12143 ns/op 4096 B/op 1 allocs/op
sen.String 13615 ns/op 4096 B/op 1 allocs/op
oj ███████████████████████████████████████████████████████████▉ 5.99
sen █████████████████████████████████████████████████████▍ 5.35
json ▓▓▓▓▓▓▓▓▓▓ 1.00
See all benchmarks
See CHANGELOG.md
-
Documentation: https://pkg.go.dev/github.com/ohler55/ojg
-
GitHub repo: https://github.com/ohler55/ojg
-
JSONPath description: https://goessner.net/articles/JsonPath
-
Oj, a Ruby JSON parser: http://www.ohler.com/oj/doc/index.html also at https://github.com/ohler55/oj
-
OjC, a C JSON parser: http://www.ohler.com/ojc/doc/index.html also at https://github.com/ohler55/ojc
-
Fast XML parser and marshaller on GitHub: https://github.com/ohler55/ox
-
Agoo, a high performance Ruby web server supporting GraphQL on GitHub: https://github.com/ohler55/agoo
-
Agoo-C, a high performance C web server supporting GraphQL on GitHub: https://github.com/ohler55/agoo-c
- Provide a Pull Request off the
developbranch. - Report a bug
- Suggest an idea