gistfile1.rb

# when we can, we do something like this:
in_parallel do |hydra|
  hydra.push client.get_x(:user_id => 1, :id => 2) do |response|
    @x = response.processed_response if response.success?
  end
  hydra.push client.get_y(:user_id => 1, :id => 3) do |response|
    @y = response.processed_response if response.success?
  end
end # at the end of the block it fires the requests in parallel and ... blocks

# when there's a single request, or the usage is explicitly serial, we do something like this
# unlike the above, fire! raises an exception if the request fails
@z = fire!(client.get_z(:user_id => 1, :id => 4))

# we also have a version without a ! which doesn't raise an exception
@a = fire(client.get_z(:user_id => 1, :id => 4))