Skip to content

Comment on Loading Pydantic models from JSON without running out of memoryparent

Comments

Can it do incremental parsing? Cant tell from a brief look.

IIUC:

* You still need to load all the bytes into memory before passing to msgspec decoding

* You can decode a subset of fields, which is really helpful

* Reusing msgspec decoders saves some cpu cycles https://jcristharif.com/msgspec/perf-tips.html#reuse-encoder...

Slides 17, 18, 19 have an example of the first two points https://pythonspeed.com/pycon2025/slides/#17

AboutSource Built by g1lg1l

Hackerly is an independent reader for Hacker News, built on the public HN API. Not affiliated with Y Combinator.