It should be noted here that the Phoenix framework author (Chris McCord) complained that the Elixir benchmarks here were set up poorly. Quoting from his post:

It should be noted here that the Phoenix framework author (Chris McCord) complained that the Elixir benchmarks here were set up poorly. Quoting from his post: "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."