Secrets to Speedy Ruby Apps On Heroku

I’ve seen a lot of slow Ruby web apps. Sometimes, it feels like my entire consulting career has been a slow accumulation of downward-sloping New Relic graphs.Why is the case? If you read that bastion of intellectual thought, Hacker News, you’d think it was because Go rocks, Ruby sucks, and Rails is crappy old-news bloatware. Also, something about how concurrency is the future, and dynamic typing is for fake programmers that can’t code.And yet, top-1000 websites like Basecamp, Shopify and Github consistently achieve server response times of less than 100 milliseconds with Rails. That’s pretty good for a dynamic, garbage-collected language, if you ask me.