1 files changed, 6 insertions, 0 deletions
diff --git a/actioncable/lib/action_cable/subscription_adapter/evented_redis.rb b/actioncable/lib/action_cable/subscription_adapter/evented_redis.rb
index 56b068976b..ed8f315791 100644
--- a/actioncable/lib/action_cable/subscription_adapter/evented_redis.rb
+++ b/actioncable/lib/action_cable/subscription_adapter/evented_redis.rb
@@ -24,6 +24,12 @@ module ActionCable
       cattr_accessor(:redis_connector) { ->(config) { ::Redis.new(url: config[:url]) } }
 
       def initialize(*)
+        ActiveSupport::Deprecation.warn(<<-MSG.squish)
+          The "evented_redis" subscription adapter is deprecated and
+          will be removed in Rails 5.2. Please use the "redis" adapter
+          instead.
+        MSG
+
         super
         @redis_connection_for_broadcasts = @redis_connection_for_subscriptions = nil
       end