Ruby 2.1 with erubis Template Engine

Question

We are looking for fastest template engine for rendering of views.

As i understand erubis is the fastest template engine in ruby.

My usecase is render templa

Answer 1

I ran benchmark between ERB and erubis rendering with below code snippet.

erubis_render_time =  Benchmark.realtime {

  template_content = File.read("#{Rails.root}/app/views/web/email_templates/erubis_benchmark_test.erb")
  1000.times do |j|
    email_body = Erubis::Eruby.new(template_content).result({welcome_mail_cta: "Shop Now", welcome_mail_string: "Welcome. Your account is activated"})
  end
}


template_path = "/web/email_templates/benchmark_test"
erb_render_time = Benchmark.realtime {
1000.times do |j|
  email_body = ActionController::Base.new.send(:render_to_string,
                                              :template => template_path,
                                              :layout => false,
                                              :locals => {:data => {welcome_mail_cta: "Shop Now",
                                                                    welcome_mail_string: "Welcome. Your account is activated"
                                                    }
                                                          }
                                              )
end
}

As per above benchmark suite Erubis is 10-15 times faster then ERB rendering.