Introduction

zarrs - A Rust Library for the Zarr Storage Format

zarrs is a Rust library for the Zarr V2 and Zarr V3 array storage formats. If you don't know what Zarr is, check out:

• the official Zarr website: zarr.dev, and
• the Zarr V3 specification.

zarrs was originally designed exclusively as a Rust library for Zarr V3. However, it now supports a V3 compatible subset of Zarr V2, and has Python and C/C++ bindings.

This book focuses mostly on the Rust implementation.

Using zarrs with zarr-python

is the reference Python Zarr implementation.

The zarrs Python bindings expose a high-performance codec pipeline to zarr-python that uses zarrs under the hood. There is no need to learn a new API and it is supported by downstream libraries like dask.

🚀 zarrs is Fast

The repository includes benchmarks of zarrs against other Zarr V3 implementations. Check out the benchmarks below that measure the time to round trip a \(1024x2048x2048\) uint16 array encoded in various ways:

More information on these benchmarks can be found in the repository.