Show HN: DemandMap – Memory Mapping S3 into Polars on macOS Without FUSE

By sonthonax · 2026-07-06 · 2 points · 0 comments

https://github.com/sonthonaxrk/demandmap

Basically this exists to solve one of my biggest pain-points with dataframe libraries and big data. It's basically impossible to lazily download data on S3 with polars unless you're processing it strictly sequentially, and even then, it won't work with arrow and numpy data. This…

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