app/models/impressionist/impressionable.rb in impressionist-1.5.2 vs app/models/impressionist/impressionable.rb in impressionist-1.6.0

@@ -6,10 +6,10 @@
       attr_accessor :impressionist_cache_options
 
       DEFAULT_CACHE ||= {
         :counter_cache => false,
         :column_name => :impressions_count,
-        :unique => false
+        :unique => :all
       }
 
       def impressionist_counter_cache_options
         @impressionist_cache_options ||= {}
         @impressionist_cache_options.reverse_merge!(DEFAULT_CACHE)