Comment by tiffanyh

These benchmarks will be forever amusing. I've done two full migrations of a Rails app to Phoenix and the differences we've seen in our telemetry boards ranged anywhere from 4.5x all the way to 20x.

IMO TechEmpower lost all credibility long time ago after it was demonstrated they do nothing against heavily gamed benchmarks where people literally do basic string matching against regexes instead of doing proper HTTP parsing. Some even relied on characters being at exact positions.

Add to this how slow they were to adopt normal production application code changes to Elixir apps where it was proven that the author of the benchmark had no idea how to code an Elixir/Phoenix app and yeah, it does not look good for TechEmpower.

All that being said, use what you like (some even expressed the confusing stance of "I like Ruby's syntax more" which, need I even comment how unprofessional that is?). But to claim Elixir is just some mere 2x times faster than Ruby is misguided. My real production experience from the last 10 years says this is bull.