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Re:Rails 5.0: Action Cable, API mode, and more by percept on Thursday June 30, 2016 @08:12PM (#12012937)
I was a bit surprised by its performance in the last TechEmpower benchmarks: roughly equivalent to Rails and other Ruby-based solutions (PHP, too).

It could be a case of not yet being optimized for the tests, but I was expecting much more impressive numbers out of the box (particularly after the full-court press on the boards and blogs).

Re:Rails 5.0: Action Cable, API mode, and more by asdf1234 on Thursday June 30, 2016 @10:13PM (#12013445)
The Phoenix tests had a ton of errors and there was no preview run so whoever submitted them wasn't able to fix them. This has happened with a bunch of different languages/frameworks in the past and until the errors in the implementation are sorted out the benchmarks are basically meaningless.

Chris McCord talks about it here https://www.reddit.com/r/elixir/comments/48ke69/any_reason_w...