Support asyncio redis

[long2ice]

No description provided.

[ekzhu]

@long2ice thanks for the pull request! There seems to be a minor bug related to importlib changes in Python 3.8. See: https://stackoverflow.com/questions/59216175/importerror-cannot-import-name-metadata-from-importlib

[long2ice]

Fixed

[ekzhu]

It looks like the bug is still there:

==================================== ERRORS ====================================
_________________ ERROR collecting test/aio/test_lsh_mongo.py __________________
ImportError while importing test module '/home/runner/work/datasketch/datasketch/test/aio/test_lsh_mongo.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
/opt/hostedtoolcache/Python/3.6.[15](https://github.com/ekzhu/datasketch/runs/6998453721?check_suite_focus=true#step:9:16)/x64/lib/python3.6/importlib/__init__.py:126: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
test/aio/test_lsh_mongo.py:15: in <module>
    from datasketch.experimental.aio.lsh import AsyncMinHashLSH
datasketch/experimental/__init__.py:[18](https://github.com/ekzhu/datasketch/runs/6998453721?check_suite_focus=true#step:9:19): in <module>
    from datasketch.experimental.aio.lsh import AsyncMinHashLSH
datasketch/experimental/aio/lsh.py:11: in <module>
    from datasketch.experimental.aio.storage import (async_ordered_storage, async_unordered_storage, )
datasketch/experimental/aio/storage.py:2: in <module>
    from importlib import metadata
E   ImportError: cannot import name 'metadata'

[long2ice]

Sorry, fixed again

[ekzhu]

Thanks @long2ice . The issue is fixed. Would you mind add some documentation for this new feature? Currently the documentation only covers examples using MongoDB's Async IO API. It would be great to have a Redis version as well. This will increase the visibility of this new feature.

The current documentation on Async IO: http://ekzhu.com/datasketch/lsh.html#asynchronous-minhash-lsh-at-scale

The documentation source for this page: https://github.com/ekzhu/datasketch/blob/master/docs/lsh.rst

[long2ice]

OK, I will do it

[long2ice]

Done

[ekzhu]

Thank you!