- Altered the default priority levels when using this feature

Author: adm-bome

README.md

@@ -79,7 +79,7 @@ Optionally add queue options to the config of a connection.
 Every queue created for this connection, get's the properties.
 
 When you want to prioritize messages when they were delayed, then this is possible by adding extra options.
-- When max-priority is omitted, the max priority is set with 100.
+- When max-priority is omitted, the max priority is set with 2 when used.
 
 ```php
 'connections' => [
@@ -93,7 +93,7 @@ When you want to prioritize messages when they were delayed, then this is possib
                 // ...
 
                 'prioritize_delayed_messages' =>  false,
-                'queue_max_priority' => 100,
+                'queue_max_priority' => 10,
             ],
         ],
     ],

src/Queue/RabbitMQQueue.php

@@ -537,6 +537,9 @@ protected function getQueueArguments(string $destination): array
     {
         $arguments = [];
 
+        // Messages without a priority property are treated as if their priority were 0.
+        // Messages with a priority which is higher than the queue's maximum, are treated as if they were
+        // published with the maximum priority.
         if ($this->isPrioritizeDelayed()) {
             $arguments['x-max-priority'] = $this->getQueueMaxPriority();
         }
@@ -577,13 +580,16 @@ protected function isPrioritizeDelayed(): bool
     }
 
     /**
-     * Returns a integer with a default of '100' for when using prioritization on delayed messages.
+     * Returns a integer with a default of '2' for when using prioritization on delayed messages.
+     * If priority queues are desired, we recommend using between 1 and 10.
+     * Using more priority layers, will consume more CPU resources and would affect runtimes.
      *
+     * @see https://www.rabbitmq.com/priority.html
      * @return int
      */
     protected function getQueueMaxPriority(): int
     {
-        return intval(Arr::get($this->options, 'queue_max_priority') ?: 100);
+        return intval(Arr::get($this->options, 'queue_max_priority') ?: 2);
     }
 
     /**