Blosc is a high performance compressor optimized for binary data (i.e. floating
point numbers, integers and booleans). It has been designed to transmit data to
the processor cache faster than the traditional, non-compressed, direct memory
fetch approach via a memcpy() OS call. Blosc main goal is not just to reduce the
size of large datasets on-disk or in-memory, but also to accelerate memory-bound
computations.

C-Blosc2 is the new major version of C-Blosc, and tries hard to be backward
compatible with both the C-Blosc1 API and its in-memory format. However, the
reverse thing is generally not true; buffers generated with C-Blosc2 are not
format-compatible with C-Blosc1 (i.e. forward compatibility is not supported).