Performance

The Lennarb is very fast. The following benchmarks were performed on a MacBook Pro (Retina, 13-inch, Early 2013) with 2,7 GHz Intel Core i7 and 8 GB 1867 MHz DDR3. Based on jeremyevans/r10k using the following. All tests are performed using the Ruby 3.3.0

Benchmark results

This document contains the benchmarks comparing Lennarb with other routers based on Rack. Metrics evaluated include Requests per Second, Initial memory usage and Startup time.

1. Requests per Second (RPS)

RPS

Position	Application	10 RPS	100 RPS	1.000 RPS	10.000 RPS
1	Lenna	126.252,36	108.086,55	87.111,91	68.460,64
2	Roda	123.360,37	88.380,56	66.990,77	48.108,29
3	Syro	114.105,38	80.909,39	61.415,86	46.639,81
4	Hanami-API	68.089,18	52.851,88	40.801,78	27.996,00

This table ranks the routers by the number of requests they can process per second. Higher numbers indicate better performance.

2. Initial memory usage (in KB)

Memory

Position	Application	10 KB	100 KB	1.000 KB	10.000 KB
1	Syro	12,160	12,544	16,460	49,692
2	Lenna	14,464	14,720	18,232	56,812
3	Roda	15,104	15,104	18,220	49,900
4	Hanami-API	15,744	16,128	20,888	64,824

This table shows the initial memory usage in KB. Lower values indicate lower memory consumption.

3. Startup time (in seconds)

Startup

Position	Application	10 seg	100 seg	1.000 seg	10.000 seg
1	Syro	0.274	0.347	0.455	0.997
2	Lenna	0.289	0.312	0.393	0.914
3	Roda	0.294	0.378	0.467	0.918
4	Hanami-API	0.445	0.550	0.808	3.074

This table shows the startup time in seconds. Lower values indicate faster startup times.

Graphs

See the graphs in the benchmarks directory of the lennarb project.

Steps to run the benchmarks

1. Install the router gem you want to test

$ gem install lennarb
$ gem install syro
$ gem install roda

2. Clone the jeremyevans/r10k repository

$ git clone https://github.com/jeremyevans/r10k

3. Create a new file in the `r10k` directory

In the r10k directory, create a new file called lennarb.rb into builders directory with the code below:

$ touch r10k/builders/lennarb.rb

Put the code below into lennarb.rb file:

# frozen_string_literal: true

# Released under the MIT License.
# Copyright, 2024, by Aristóteles Coutinho.

lennarb_routes =
  lambda do |f, level, prefix, calc_path, lvars|
    base = BASE_ROUTE.dup
    ROUTES_PER_LEVEL.times do
      route = "#{prefix}#{base}"
      if level == 1
        params = lvars.map { |lvar| "\#{req.params[:#{lvar}]}" }
.join('-')
        f.puts "  app.get '#{route}/:#{lvars.last}' do |req, res|"
        f.puts "    body = \"#{calc_path[1..]}#{base}-#{params}\""
        f.puts '    res.html body'
        f.puts '  end'
      else
       lennarb_routes.call(f, level - 1, "#{route}/:#{lvars.last}/", "#{calc_path}#{base}/", lvars + [lvars.last.succ])
      end
      base.succ!
    end
  end

File.open("#{File.dirname(__FILE__)}/../apps/lennarb_#{LEVELS}_#{ROUTES_PER_LEVEL}.rb", 'wb') do |f|
  f.puts '# frozen_string_literal: true'
  f.puts "require 'lennarb'"
  f.puts 'app = Lennarb.new'
  lennarb_routes.call(f, LEVELS, '/', '/', ['a'])
  f.puts 'App = app'
end

4. Run the benchmarks

$ bundle exec rake bench graphs R10K_APPS="lennarb syro roda"

Conclusion

These numbers are just a small reference, Lennarb is not a framework, it is a router. In my opinion, Roda is the best router for Ruby because it has many interesting features, such as a middleware manager, and very good development performance.