Explain @watched_queues

resque · Dec 11, 2009 · 0f296e3 · 0f296e3
1 parent 6c8ed8f
commit 0f296e3
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/lib/resque.rb b/lib/resque.rb
@@ -111,6 +111,8 @@ def remove_queue(queue)
   # Used internally to keep track of which queues we've created.
   # Don't call this directly.
   def watch_queue(queue)
+    # In order to avoid hitting Redis every time a job is queued we
+    # cache the list of known queues.
     @watched_queues ||= {}
     return if @watched_queues[queue]
     redis.sadd(:queues, queue.to_s)