# Announcing C-Blosc2 2.17.0
A fast, compressed and persistent binary data store library for C.
## What is new?
This introduces some new features and improvements:
* New b2nd_copy_buffer2() function for copying buffers with typesizes
larger than 255. The previous b2nd_copy_buffer() function is now
deprecated and will be removed in a future release.
* Support repeated values larger than 8-bit, also for n-dim arrays.
This is useful for compressing arrays with large runs of repeated
values, like in the case of images with large areas of the same color.
* Fix a leak in the pthreads emulation for Windows. Fixes #647.
Thanks to @jocbeh for the report and fix (#655).
* Update zstd to 1.5.7. Thanks to Tom Birch.
For more info, please 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-blosc2Blosc is distributed using the BSD license, see LICENSE.txt
for details.
## Mailing list
There is an official Blosc mailing list at:
bl...@googlegroups.comhttps://groups.google.com/g/blosc## Tweeter feed
Please follow @Blosc2 to get informed about the latest developments.
Enjoy Data!
- The Blosc Development Team