rs-0.55.2

pola-rs/polarsrs-0.55.2Aug 6, 2026by github-actions[bot]

AI Summary

A maintenance release focused on cloud IO reliability and critical bug fixes, including a correction for unsoundness in rayon.

Key Highlights

Added adaptive HTTP rate-limiter for cloud IO
Fixed unsoundness in rayon block_on
Improved IR node equality checking in CSPE
Updated documentation regarding arg_extremum functions

New Features

Adaptive HTTP rate-limiter for cloud IO

Full Release Notes

## ✨ Enhancements

- Add adaptive HTTP rate-limiter for cloud IO (#28591)

## 🐞 Bug fixes

- Unsoundness in rayon block\_on (#28709)
- Check for (shallow) IR node equality on top of hashing in CSPE (#28506)

## 📖 Documentation

- Document that arg\_extremum functions return any index on ties (#28691)

Thank you to all our contributors for making this release possible!
@dancsi, @dsprenkels, @kdn36, @orlp and @ritchie46