Top 10 Go json-parser Projects

GJSON

34 13,589 5.2 Go

Get JSON values quickly - JSON parser for Go

Project mention: Rob Pike: Gobs of data (2011) | news.ycombinator.com | 2023-12-04

Someone made a benchmark of serialization libraries in go [1], and I was surprised to see gobs is one of the slowest ones, specially for decoding. I suspect part of the reason is that the API doesn't not allow reusing decoders [2]. From my explorations it seems like both JSON [3], message-pack [4] and CBOR [5] are better alternatives.
By the way, in Go there are a like a million JSON encoders because a lot of things in the std library are not really coded for maximum performance but more for easy of usage, it seems. Perhaps this is the right balance for certain things (ex: the http library, see [6]).
There are also a bunch of libraries that allow you to modify a JSON file "in place", without having to fully deserialize into structs (ex: GJSON/SJSON [7] [8]). This sounds very convenient and more efficient that fully de/serializing if we just need to change the data a little.
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1: https://github.com/alecthomas/go_serialization_benchmarks
2: https://github.com/golang/go/issues/29766#issuecomment-45492...
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3: https://github.com/goccy/go-json
4: https://github.com/vmihailenco/msgpack
5: https://github.com/fxamacker/cbor
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6: https://github.com/valyala/fasthttp#faq
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7: https://github.com/tidwall/gjson
8: https://github.com/tidwall/sjson
jsoniter

12 13,048 0.0 Go

A high-performance 100% compatible drop-in replacement of "encoding/json" (by json-iterator)

Project mention: Handling high-traffic HTTP requests with JSON payloads | /r/golang | 2023-12-07

Since most of the time would be spent decoding json, you could try to cut this time using https://github.com/bytedance/sonic or https://github.com/json-iterator/go, both are drop-in replacements for the stdlib, sonic is faster.
InfluxDB

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jsonparser

15 5,347 0.0 Go

One of the fastest alternative JSON parser for Go that does not require schema

Project mention: Introducing astjson: Transform and Merge JSON Objects with Unmatched Speed in Go | dev.to | 2023-11-29

In this article, I will introduce you to a new package called astjson that I have been working on for the last couple of weeks. It is a Go package that allows you to transform and merge JSON objects with unmatched speed. It is based on the jsonparser package by buger aka Leonid Bugaev and extends it with the ability to transform and merge JSON objects at unparalleled performance.
easyjson

10 4,332 3.6 Go

Fast JSON serializer for golang.
fastjson

18 2,149 0.0 Go

Fast JSON parser and validator for Go. No custom structs, no code generation, no reflection (by valyala)

Project mention: What's the best way to unmarshall this nested JSON? | /r/golang | 2023-06-29

I’ve used fastjson when unmarshalling to Structs is inconvenient. https://github.com/valyala/fastjson
jstream

1 550 0.0 Go

Streaming JSON parser for Go
ajson

0 214 3.2 Go

Abstract JSON for Golang with JSONPath support
WorkOS

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hocon

0 71 5.6 Go

go implementation of lightbend's HOCON configuration library https://github.com/lightbend/config
jsonc

1 15 0.9 Go

Golang (v1.13+) JSON5 preprocessor supporting comments, trailing comma, unquoted key/single-quoted string, hex number, trailing decimal point, literal newlines and more. (by adhocore)
json-parser

1 5 7.1 Go

A JSON parser written in Go. (by biraj21)

Project mention: JSON parser in Go | /r/golang | 2023-07-20

Here's the GitHub repo: https://github.com/biraj21/json-parser

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020). The latest post mention was on 2023-12-07.