"We don't know what caused the errors and unfortunately we didn't have a chance to collaborate with them on a true run. A few months ago they added Phoenix in a preview, but it was a very poor implementation. They were testing JSON benchmarks through the :browser pipeline, complete with crsf token generation. They had a dev DB pool size of 10, where other frameworks were given of pool size of 100. And they also had heavy IO logging, where other frameworks did no logging. We sent a PR to address these issues, and I was hoping to see true results in the latest runs, but no preview was provided this time and we weren't able to work with them on the errors. tldr; these results are not representative of the framework."

From my personal experience going from Rails/Sinatra to Phoenix it feels a lot faster but I haven't done any benchmarks so take that with a grain of salt.

In the Techempower benchmarks the Phoenix tests had a ton of errors and there was no preview run so whoever submitted them wasn't able to fix them. Look at the error column. I assume they'll be fixed in the next run.

https://www.techempower.com/benchmarks/#section=data-r12&hw=...

we should all be using Dart on the server coupled with MongoDB perhaps.