Update to latest Redis - aioredis deprecated

As of Feb 21, 2023 aioredis-py was archived. See the package repo
here:
https://github.com/aio-libs-abandoned/aioredis-py

docs/user/tutorial-asgi.rst

@@ -685,10 +685,10 @@ small files littering our storage, it consumes CPU resources, and we would
 soon find our application crumbling under load.
 
 Let's mitigate this problem with response caching. We'll use Redis, taking
-advantage of `aioredis <https://github.com/aio-libs/aioredis>`_ for async
+advantage of `redis <https://redis.readthedocs.io/en/stable/examples/asyncio_examples.html>`_ for async
 support::
 
-  pip install aioredis
+  pip install redis
 
 We will also need to serialize response data (the ``Content-Type`` header and
 the body in the first version); ``msgpack`` should do::
@@ -700,7 +700,7 @@ installing Redis server on your machine, one could also:
 
 * Spin up Redis in Docker, eg::
 
-    docker run -p 6379:6379 redis
+    docker run -p 6379:6379 redis/redis-stack:latest
 
 * Assuming Redis is installed on the machine, one could also try
   `pifpaf <https://github.com/jd/pifpaf>`_ for spinning up Redis just
@@ -747,9 +747,8 @@ implementations for production and testing.
     ``self.redis_host``. Such a design might prove helpful for apps that
     need to create client connections in more than one place.
 
-Assuming we call our new :ref:`configuration <asgi_tutorial_config>` items
-``redis_host`` and ``redis_from_url()``, respectively, the final version of
-``config.py`` now reads:
+Assuming we call our new :ref:`configuration <asgi_tutorial_config>` item
+``redis_host`` the final version of ``config.py`` now reads:
 
 .. literalinclude:: ../../examples/asgilook/asgilook/config.py
     :language: python

examples/asgilook/asgilook/cache.py

@@ -1,4 +1,5 @@
 import msgpack
+import redis.asyncio as redis
 
 
 class RedisCache:
@@ -24,7 +25,7 @@ async def process_startup(self, scope, event):
         await self._redis.ping()
 
     async def process_shutdown(self, scope, event):
-        await self._redis.close()
+        await self._redis.aclose()
 
     async def process_request(self, req, resp):
         resp.context.cached = False

examples/asgilook/asgilook/config.py

@@ -2,23 +2,25 @@
 import pathlib
 import uuid
 
-import aioredis
+def from_url_wrapper(url):
+    pool = redis.ConnectionPool.from_url(url)
+    return redis.Redis.from_pool(pool)
 
 
 class Config:
     DEFAULT_CONFIG_PATH = '/tmp/asgilook'
     DEFAULT_MIN_THUMB_SIZE = 64
     DEFAULT_REDIS_HOST = 'redis://localhost'
-    DEFAULT_REDIS_FROM_URL = aioredis.from_url
     DEFAULT_UUID_GENERATOR = uuid.uuid4
+    DEFAULT_REDIS_FROM_URL = from_url_wrapper
 
     def __init__(self):
         self.storage_path = pathlib.Path(
             os.environ.get('ASGI_LOOK_STORAGE_PATH', self.DEFAULT_CONFIG_PATH)
         )
         self.storage_path.mkdir(parents=True, exist_ok=True)
 
-        self.redis_from_url = Config.DEFAULT_REDIS_FROM_URL
         self.min_thumb_size = self.DEFAULT_MIN_THUMB_SIZE
+        self.redis_from_url = Config.DEFAULT_REDIS_FROM_URL
         self.redis_host = self.DEFAULT_REDIS_HOST
         self.uuid_generator = Config.DEFAULT_UUID_GENERATOR