1 files changed, 22 insertions, 0 deletions
diff --git a/actioncable/lib/action_cable/subscription_adapter/async.rb b/actioncable/lib/action_cable/subscription_adapter/async.rb
new file mode 100644
index 0000000000..cca6894289
--- /dev/null
+++ b/actioncable/lib/action_cable/subscription_adapter/async.rb
@@ -0,0 +1,22 @@
+require 'action_cable/subscription_adapter/inline'
+
+module ActionCable
+  module SubscriptionAdapter
+    class Async < Inline # :nodoc:
+      private
+        def new_subscriber_map
+          AsyncSubscriberMap.new
+        end
+
+        class AsyncSubscriberMap < SubscriberMap
+          def add_subscriber(*)
+            Concurrent.global_io_executor.post { super }
+          end
+
+          def invoke_callback(*)
+            Concurrent.global_io_executor.post { super }
+          end
+        end
+    end
+  end
+end