glean verb

1. Extract (information) from various sources.
2. Collect gradually and bit by bit.

Glean is a gem for split testing

It runs atop Trebuchet or a similar feature launcher. It makes configuring experiments consistent and reliable.

first you...

options = {
  :bucket_names => ['Aces', 'B-Team', 'Control'],
  :bucket_percent => 1, # or 5, 10, 20, 50
  :subject => 'user', # or 'visitor'
  :name => "Awesome Sauce"
}

ex = Glean::Experiment.new(options)
ex.save # write to backend (Redis)
ex.configure # set up Trebuchet features

and then you could...

<% treatment = Glean['Awesome Sauce'].downcase %>
<input type="button" class="button-color-<%= treatment %>" />

case Glean["Awesome Sauce"]
  do_this when "Aces"
  do_that when "B-Team"
  do_the_other when "Control"
  oh_you_are_not_part_of_this_experiment_at_all_are_you? when nil
end

and then you can also...

ex = Glean::Experiment.find("Awesome Sauce")
ex.valid?
ex.errors