fastjson
Fast JSON parser and validator for Go. No custom structs, no code generation, no reflection (by valyala)
jsonparser
One of the fastest alternative JSON parser for Go that does not require schema (by buger)
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fastjson | jsonparser | |
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18 | 15 | |
2,162 | 5,349 | |
- | - | |
0.0 | 0.0 | |
2 months ago | about 2 months ago | |
Go | Go | |
MIT License | MIT License |
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
fastjson
Posts with mentions or reviews of fastjson.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2023-06-29.
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What's the best way to unmarshall this nested JSON?
I’ve used fastjson when unmarshalling to Structs is inconvenient. https://github.com/valyala/fastjson
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Object-oriented JSON in Go
Interesting approach, even though reflection support is supposed to be landing soon, this would be really really useful when using TinyGo. (Fro example, writing web backend serverless functions with Fermyon’s Spin framework for WASM that needs to return JSON). Do you have any benchmarks on how it performs vs stdlib’s encoding/json and/or something like fastjson?
- Best approach for a monolithic web app?
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High-performance JSON parsing in Go
It relies heavily on bytes.IndexOf for which Go provides SIMD optimizations transparently. However, it has some correctness issues when parsing malformed json that might need to be addressed. Generally it is recommended to be used with trusted json documents for internal services and may require further testing before being used to parse arbitrary json documents.
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3 Ways I Keep My Rest APIs endpoints down to 4-6 lines and eliminate boilerplate. What are yours?
Try fastjson library. It allows you to grab deeply nested json objects without marshalling the entire json.
- Any way to convert unknown/dynamic json to generic object structure
- json.Decoder, ways to skip first tokens.
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Golang, GraphQL y Postgress
Como herramientas te recomiendo: FastJson https://github.com/valyala/fastjson : Si necesitas leer jsons Testify https://github.com/stretchr/testify : Para mockear y testear
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Ad hoc JSON parsing
In Go if I need to extract just a few fields from a large JSON document it's hard to beat https://github.com/valyala/fastjson
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TinyGo Reflection?
Another option is to use what I like to call "Lazy" decoders, like https://github.com/valyala/fastjson which will work with TinyGo, but doesn't have the same type of API as the standard lib (or alternatives) in terms of Marshaling and Unmarshalling. Instead you "Parse" a JSON object, and use Getters to access the types you want.
jsonparser
Posts with mentions or reviews of jsonparser.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2023-11-29.
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Introducing astjson: Transform and Merge JSON Objects with Unmatched Speed in Go
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.
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What's the best way to unmarshall this nested JSON?
Use this to extract the data value, and handle/unmarshal it accordingly.
- Modification of json string without deserialisation into map/struct
- Christmas giveaway: 10 copies of my book Domain-driven Design with Golang book, also AMA
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Wasm difficulties in Rust, Haskell, and Go
jsonparser can decode, but can't encode
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Is there a way to parse unstructured data?
Best I've found is this: https://github.com/buger/jsonparser
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Why the heck am I getting an empty byte array trying to read a simple json file?
I was actually just trying to get it into a []byte to use this package which claims it works well for unknown data structures.
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Zq: An Easier (and Faster) Alternative to Jq
`jj` is a little tool I wrote that uses https://github.com/buger/jsonparser
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Whats the fastest JSON unmarshaling package as of right now?
If you don't know the schema or you only need to access one or two fields in a much larger JSON object, I would recommend https://github.com/buger/jsonparser as it provides an easy API to access specific values without fully unmarshaling. This is an unusual use case though, 9 times out of 10 I would tend to use easyjson.
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map[string]interface{} decoder
Reading and navigating arbitrary JSON: I've used https://github.com/tidwall/gjson, many others like https://github.com/buger/jsonparser are also out there.
What are some alternatives?
When comparing fastjson and jsonparser you can also consider the following projects:
easyjson - Fast JSON serializer for golang.
ej - Write and read JSON from different sources in one line
sonic - A blazingly fast JSON serializing & deserializing library
mapslice-json - Go MapSlice for ordered marshal/ unmarshal of maps in JSON
ojg - Optimized JSON for Go
jsonic - All you need with JSON
json-to-proto.github.io - convert JSON to Protocol Buffers online in your browser instantly
go-parameters - :blue_book: Easily parse incoming parameters and values from an HTTP request
GJSON - Get JSON values quickly - JSON parser for Go
jsondiff - Compute the diff between two JSON documents as a series of RFC6902 (JSON Patch) operations