How 7 Lines of Ruby Will Speed Up Your Heroku Deploys (thirdprestige.com)

The article brings up a good point: must you watch the deploy like a hawk and do nothing else while it happens? The author mentions reading HN. What's stopping you doing something else during the deploy that's actually productive, to hide the time cost?

I think the Heroku Rails 4 buildpack does this automatically. And Rails 4 and Ruby 2.0 build assets faster anyway.

Anyone have any luck getting this to work on a previously installed app? It seems to be getting the custom buildpack, and after reading the code a bit it seems, yes, it says it's caching the assets, but it never says it's using the cache on the next push. :/