ActiveRecord with large result sets - part 2: streaming data - Pat ShaughnessyIn part 1 of this series I showed how using select_all instead of find(:all) can often speed up slow ActiveRecord queries when you expect a large amount of data, by as much as 30 or 40% with Rails 3. However, often 30-40% faster just isn’t enough. What difference does it make if I have to wait 3 minutes or 5 minutes for Rails to display a web page? Either way I’m going to get frustrated and abando
