(cross post from http://stackoverflow.com/questions/13292477/ruby-o..., but I haven't gotten an answer yet) I've got a simple model called "Search" used for storing searches. It captures the URL params and stores them in an attribute :search_criteria, which is serialized as a Hash: serialize :search_criteria, Hash This all works perfectly, but it performs horribly. For only 5 objects, the following statements take roughly 0.2 seconds. SavedSearch.all.map(&:search_criteria) If, however, I remove the serialize line (such that search_criteria returns a string) the statements take only 0.002 seconds. That's 2 orders of magnitude difference for deserializing a Hash!! What's happening here? I've tried this on multiple systems, including Heroku, and it's the same everywhere. Rails.version = 3.2.8 Ruby 1.9.3p194 (2012-04-20 revision 35410) [x86_64-linux]
on 2012-11-09 11:56
on 2012-11-09 19:44
This list is for ruby, not rails...