[Messenger] Keepalive support for Doctrine & Redis

Author: HypeMC

messenger.rst

@@ -555,7 +555,7 @@ the message from being redelivered until the worker completes processing it:
 
 .. note::
 
-    This option is only available for the following transports: Beanstalkd and AmazonSQS.
+    This option is only available for the following transports: Beanstalkd, AmazonSQS, Doctrine and Redis.
 
 .. versionadded:: 7.2
 
@@ -1745,13 +1745,12 @@ in the table.
     The length of time to wait for a response when calling
     ``PDO::pgsqlGetNotify``, in milliseconds.
 
-The keepalive feature, which prevents messages from being prematurely redelivered during
-long-running processing, updates the ``delivered_at`` timestamp periodically to ensure
-the message is marked as "in progress".
+The Doctrine transport supports the ``--keepalive`` option by periodically updating
+the ``delivered_at`` timestamp to prevent the message from being redelivered.
 
 .. versionadded:: 7.3
 
-    Keepalive support, using the ``--keepalive`` option, was introduced in Symfony 7.3.
+    Keepalive support was introduced in Symfony 7.3.
 
 Beanstalkd Transport
 ~~~~~~~~~~~~~~~~~~~~
@@ -1951,6 +1950,13 @@ under the transport in ``messenger.yaml``:
     in your case) to avoid memory leaks. Otherwise, all messages will remain
     forever in Redis.
 
+The Redis transport supports the ``--keepalive`` option by using Redis's ``XCLAIM``
+command to periodically reset the message's idle time to zero.
+
+.. versionadded:: 7.3
+
+    Keepalive support was introduced in Symfony 7.3.
+
 In Memory Transport
 ~~~~~~~~~~~~~~~~~~~