Streaming Data with Rails and Heroku

A reasonably common feature in Rails is to export data to CSV. I find this is often a quick-and-easy solution to many problems, since it’s very easy to analyze and filter the data with Excel. The problem with exporting this data is that it can take quite a while to generate the CSV file, especially if you’re dealing with large datasets. Heroku will terminate any request that takes longer than 30 s