That one can be answered quick and painless: Phoenix is fast. Must faster than Rails.
“Perfection is reached not when there is nothing more to add, but when there is nothing more to subtract.” ~ Antoine de Saint-Exupéry
…ugs Are Shallow”, noting that a major security bug called Heartbleed went undetected for two years. Atwood wrote that “if you want to find bugs in your code, in your website, in your app, you do it the old fashioned way: by paying for them.”