Add dispatch_notifications_interval config option

doc/source/admin/galaxy_options.rst

@@ -5463,6 +5463,17 @@
 :Type: int
 
 
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+``dispatch_notifications_interval``
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+:Description:
+    The interval in seconds between attempts to dispatch notifications
+    to users (every 10 minutes by default). Runs in a Celery task.
+:Default: ``600``
+:Type: int
+
+
 ~~~~~~~~~~~~~~~~~~~~~~
 ``help_forum_api_url``
 ~~~~~~~~~~~~~~~~~~~~~~

lib/galaxy/config/sample/galaxy.yml.sample

@@ -2911,6 +2911,10 @@ galaxy:
   # a Celery task.
   #expired_notifications_cleanup_interval: 86400
 
+  # The interval in seconds between attempts to dispatch notifications
+  # to users (every 10 minutes by default). Runs in a Celery task.
+  #dispatch_notifications_interval: 600
+
   # The URL pointing to the Galaxy Help Forum API base URL. The API must
   # be compatible with Discourse API (https://docs.discourse.org/).
   #help_forum_api_url: https://help.galaxyproject.org/

lib/galaxy/config/schemas/config_schema.yml

@@ -3990,6 +3990,13 @@ mapping:
         desc: |
           The interval in seconds between attempts to delete all expired notifications from the database (every 24 hours by default). Runs in a Celery task.
 
+      dispatch_notifications_interval:
+        type: int
+        required: false
+        default: 600
+        desc: |
+          The interval in seconds between attempts to dispatch notifications to users (every 10 minutes by default). Runs in a Celery task.
+
       help_forum_api_url:
         type: str
         required: false