pysimdjson VS orjson

Compare pysimdjson vs orjson and see what are their differences.

orjson

Fast, correct Python JSON library supporting dataclasses, datetimes, and numpy (by ijl)
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pysimdjson orjson
3 9
545 3,564
- -
5.1 8.7
2 months ago 8 days ago
Python Python
MIT License Apache License 2.0
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.

pysimdjson

Posts with mentions or reviews of pysimdjson. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-05-23.
  • [package-find] lsp-bridge
    5 projects | reddit.com/r/emacs | 23 May 2022
    You are aware of simdjson being available in python if you really need some json crunching, albeit json module in Python is implemented in C itself, so I don't think understand why do you think Python is slow there?
  • The fastest tool for querying large JSON files is written in Python (benchmark)
    16 projects | news.ycombinator.com | 12 Apr 2022
    json: 113.79130696877837 ms

    While `orjson`, is faster than `ujson`/`json` here, it's only ~6% faster (in this benchmark). `simdjson` and `msgspec` (my library, see https://jcristharif.com/msgspec/) are much faster due to them avoiding creating PyObjects for fields that are never used.

    If spyql's query engine can determine the fields it will access statically before processing, you might find using `msgspec` for JSON gives a nice speedup (it'll also type check the JSON if you know the type of each field). If this information isn't known though, you may find using `pysimdjson` (https://pysimdjson.tkte.ch/) gives an easy speed boost, as it should be more of a drop-in for `orjson`.

  • How I cut GTA Online loading times by 70%
    7 projects | reddit.com/r/programming | 28 Feb 2021
    I don't think JSON is really the problem - parsing 10MB of JSON is not so slow. For example, using Python's json.load takes about 800ms for a 47MB file on my system, using something like simdjson cuts that down to ~70ms.

orjson

Posts with mentions or reviews of orjson. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-05-25.

What are some alternatives?

When comparing pysimdjson and orjson you can also consider the following projects:

ujson

ormsgpack - Msgpack serialization/deserialization library for Python, written in Rust using PyO3 and rust-msgpack. Reboot of orjson. msgpack.org[Python]

cookiecutter-fastapi-firestore

mashumaro - Fast and well tested serialization framework on top of dataclasses

ultrajson - Ultra fast JSON decoder and encoder written in C with Python bindings

yapic.json - Ultra fast json encode / decode library for Python 3.5+

Fast JSON schema for Python - Fast JSON schema validator for Python.

lupin is a Python JSON object mapper - Python document object mapper (load python object from JSON and vice-versa)

msgspec - A fast and friendly JSON/MessagePack library, with optional schema validation

serpy - ridiculously fast object serialization

cysimdjson - Very fast Python JSON parsing library