[pmontra]

This is a benchmark I did with the versions of Rails and Phoenix that were current in October 2015.

select * from visits, plus conversion to JSON and delivery to a client on local loop. About 5000 records.

* Phoenix 140 ms

* Rails 248 ms

* Ruby without AR 219 ms

* PostgreSQL 2.97 ms, with no JSON generation and no delivery

select started_at, duration from visits -- JSON and delivery

* Phoenix 74 ms

* Rails 116 ms

* Ruby without AR 88 ms

* PostgreSQL 3.47 ms, no JSON no delivery

Single process, so maybe Phonix could get a larger advantage as the number of processes/requests increase. For the typical none to low traffic site there is little difference, the tool the programmer is more familiar with wins.

Edit: improved formatting.

[emluque]

Thank you for your reply. I can't edit my comment any more but where it says:

>Ruby Conf that claimed that Elixir was giving better results (in request time) than rails

I meant:

Ruby Conf that claimed that Elixir was giving better results (in request time) without a cache than rails with a cache

[rimantas]

IIRC, Rails app mentioned in the talk was very old. Not a fair comparison, IMHO.