docs(valkey): add minimal docs for the new valkey protocol

Author: Zerotask

README.rst

@@ -9,7 +9,7 @@
 :Download: https://pypi.org/project/kombu/
 :Source: https://github.com/celery/kombu/
 :DeepWiki: |deepwiki|
-:Keywords: messaging, amqp, rabbitmq, redis, mongodb, python, queue
+:Keywords: messaging, amqp, rabbitmq, redis, valkey, mongodb, python, queue
 
 About
 =====
@@ -33,7 +33,7 @@ Features
     * AMQP transport using the `py-amqp`_, or `qpid-python`_ libraries.
 
     * Virtual transports makes it really easy to add support for non-AMQP
-      transports. There is already built-in support for `Redis`_,
+      transports. There is already built-in support for `Redis`_, `Valkey`_,
       `Amazon SQS`_, `ZooKeeper`_, `SoftLayer MQ`_, `MongoDB`_ and `Pyro`_.
 
     * In-memory transport for unit testing.
@@ -60,6 +60,7 @@ and the `Wikipedia article about AMQP`_.
 .. _`py-amqp`: https://pypi.org/project/amqp/
 .. _`qpid-python`: https://pypi.org/project/qpid-python/
 .. _`Redis`: https://redis.io
+.. _`Valkey`: https://valkey.io
 .. _`Amazon SQS`: https://aws.amazon.com/sqs/
 .. _`Zookeeper`: https://zookeeper.apache.org/
 .. _`Rabbits and warrens`: http://web.archive.org/web/20160323134044/http://blogs.digitar.com/jjww/2009/01/rabbits-and-warrens/
@@ -85,6 +86,8 @@ Transport Comparison
 +---------------+----------+------------+------------+---------------+--------------+-----------------------+
 | *redis*       | Virtual  | Yes        | Yes        | Yes (PUB/SUB) | Yes          | No                    |
 +---------------+----------+------------+------------+---------------+--------------+-----------------------+
+| *valkey*      | Virtual  | Yes        | Yes        | Yes (PUB/SUB) | Yes          | No                    |
++---------------+----------+------------+------------+---------------+--------------+-----------------------+
 | *mongodb*     | Virtual  | Yes        | Yes        | Yes           | Yes          | Yes                   |
 +---------------+----------+------------+------------+---------------+--------------+-----------------------+
 | *SQS*         | Virtual  | Yes        | Yes [#f1]_ | Yes [#f2]_    | No           | No                    |

docs/userguide/connections.rst

@@ -135,6 +135,9 @@ All of these are valid URLs:
     # Using Redis sentinel
     sentinel://sentinel1:26379;sentinel://sentinel2:26379
 
+    # Using Valkey
+    valkey://localhost:6379/
+
     # Using Qpid
     qpid://localhost/
 
@@ -230,6 +233,8 @@ Transport Comparison
 +---------------+----------+------------+------------+---------------+--------------+
 | *redis*       | Virtual  | Yes        | Yes        | Yes (PUB/SUB) | Yes          |
 +---------------+----------+------------+------------+---------------+--------------+
+| *valkey*      | Virtual  | Yes        | Yes        | Yes (PUB/SUB) | Yes          |
++---------------+----------+------------+------------+---------------+--------------+
 | *SQS*         | Virtual  | Yes        | Yes [#f1]_ | Yes [#f2]_    | No           |
 +---------------+----------+------------+------------+---------------+--------------+
 | *zookeeper*   | Virtual  | Yes        | Yes [#f1]_ | No            | Yes          |

kombu/transport/redis.py

@@ -25,6 +25,16 @@
 
     sentinel://[USER:PASSWORD@]SENTINEL_ADDRESS[:PORT]
 
+
+To use Valkey (which was originally a redis fork),
+the connection string has the following format:
+
+.. code-block::
+
+    valkey://[USER:PASSWORD@]VALKEY_ADDRESS[:PORT][/VIRTUALHOST]
+    valkeys://[USER:PASSWORD@]VALKEY_ADDRESS[:PORT][/VIRTUALHOST]
+
+
 Transport Options
 =================
 * ``sep``