I have setup my puma web server based on heroku manual: Deploying Rails Applications with the Puma Web Server
config/puma.rb
:
workers Integer(ENV['WEB_CONCURRENCY'] || 2)
threads_count = Integer(ENV['RAILS_MAX_THREADS'] || 2)
threads threads_count, threads_count
preload_app!
rackup DefaultRackup
port ENV['PORT'] || 3000
environment ENV['RACK_ENV'] || 'development'
on_worker_boot do
ActiveRecord::Base.establish_connection
end
Procfile
contains:
web: bundle exec puma -C config/puma.rb
Now when I try to access action which has sleep 10
which delays the response and then try to access some other action, my understanding was that Puma would handle these 2 requests concurrently (since I have 2 workers). But instead it waits for the first request which sleeps to finish then it proceeds to the second one. Am i missing something?
My setup is:
Ruby 2.2.4
Rails 4.2.0
EDIT:
Ok, so I found out that on Heroku, it works, so question is, why it doesn't work in development mode?
rails s
does not use the Procfile, you may want to look at using a tool like foreman: https://github.com/ddollar/foreman
update: this was the solution:
config.allow_concurrency = true
in the rails development config.