ijl/orjson
View on GitHub ↗ ★ 8,283 Python
Fast, correct Python JSON library supporting dataclasses, datetimes, and numpy
12 mentions on Hacker News by 8 people: 6 stories, 6 comments · first 2018-12-19 · latest 2026-02-15
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…it is often used as replacement of than JSON functions in core Python 3. As of Jan 29th 2026 ( https://github.com/ijl/orjson/commit/d58168733189f82b3fd0c05... ) open issue tracker or pull requests has been removed from the orjson repo due…
comment by anutrix · 2026-02-15 · in Orjson no more open issue tracker or pull requests due to signal-to-noise ratio -
…to not publish this, I'm just this evil.) I've looked into replacing ujson in pydantic with orjson (https://github.com/ijl/orjson). In this implementation, the same JSON library is used for everything, and JSON outputs bytes without…
comment by 3r7j6qzi9jvnve · 2024-06-06 · in JSON extra uses orjson instead of ujson (2019) -
…same way pandas was used (ie, `python -c "..."`)? [0] https://github.com/ultrajson/ultrajson [1] https://github.com/ijl/orjson
comment by davidatbu · 2022-04-12 · in The fastest tool for querying large JSON files is written in Python (benchmark) -
…to serialization, which can be addressed by swapping in a fast serialization library like orjson ( https://github.com/ijl/orjson ). Though even then you’d probably have a hard time getting to tens of milliseconds. Other common culprits:…
comment by radus · 2021-12-16 · in Show HN: FastWSGI, an ultra-fast WSGI server for Python -
…looking for a fast JSON lib for CPython, orjson[1] (written in rust) is the best I've found. [1] https://github.com/ijl/orjson#performance
comment by fastball · 2020-08-06 · in Simdjson: Parsing gigabytes of JSON per second -
…(and my favorite) JSON (de)serializer available for Python, orjson[1], does not support pypy. [1] https://github.com/ijl/orjson
comment by fastball · 2020-05-20 · in Python performance: it’s not just the interpreter