ANN: C-Blosc2 2.19.1 is out!

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Francesc Alted

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Jul 17, 2025, 7:36:25 AMJul 17
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# Announcing C-Blosc2 2.19.1
A fast, compressed and persistent binary data store library for C.

## What is new?

* [FEATURE] New `blosc2_error_string()` public function for getting the error string
  corresponding to a given error code.  This is useful for debugging purposes.
  Thanks to Barak Ugav (@barakugav).
* [FIX] Eagerly register io_cb's to avoid race. Thanks to Tom Birch (@tom-neara).

For more info, see the release notes in:

https://github.com/Blosc/c-blosc2/blob/main/RELEASE_NOTES.md

## What is it?

Blosc2 is a high performance data container optimized for binary data.
It builds on the shoulders of Blosc, the high performance meta-compressor
(https://github.com/Blosc/c-blosc).  Blosc2 is the next generation of Blosc,
an award-winning (https://www.blosc.org/posts/prize-push-Blosc2)` library
that has been around for more than a decade.

Blosc2 expands the capabilities of Blosc by providing a higher lever
container that is able to store many chunks on it (hence the super-block name).
It supports storing data on both memory and disk using the same API.
Also, it adds more compressors and filters.

## Download sources

The github repository is over here:

https://github.com/Blosc/c-blosc2

Blosc is distributed using the BSD license, see LICENSE.txt
for details.

## Mailing list

There is an official Blosc mailing list at:

bl...@googlegroups.com
https://groups.google.com/g/blosc

## Fosstodon feed

Please follow https://fosstodon.org/@Blosc2 to get informed about the latest developments.


Enjoy Data!
- The Blosc Development Team
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