A :ref:`ProxyNDSource` that serves the chunks of a Blosc2 frame living behind an fsspec URL, reading each one with a range request instead of transferring the whole container. For other sources, see :ref:`ProxyNDSource` and :ref:`ProxySource`.
examples/ndarray/rw-fsspec.py is a runnable walkthrough of this and the
other two ways to read an fsspec URL, and of writing one back.
examples/ndarray/concurrent-fsspec.py measures max_concurrency against a
filesystem with a simulated round trip, since no protocol that runs offline has
latency for the thread pool to hide.
.. currentmodule:: blosc2
.. autoclass:: FsspecNDSource
:members:
:exclude-members: all, any, max, mean, min, prod, std, sum, var
:member-order: groupwise