Liquid, Handlebars, Erb and gsub benchmarks

benchmark.rb

require 'rubygems'
require 'benchmark'
require 'ruby-handlebars'
require 'cgi'
require 'liquid'
require 'erb'

input = ("a".."z").map { |letter| [letter, letter] }.to_h
n = 50_000
hbs = Handlebars::Handlebars.new

Benchmark.bm do |benchmark|
  benchmark.report("handlebars") do
    n.times do
      hbs.compile("Hello {{name}}").call({ name: 'world' })
    end
  end

  benchmark.report("liquid") do
    n.times do
      Liquid::Template.parse("Hello {{name}}").render({ name: 'world' })
    end
  end

  benchmark.report("erb") do
    n.times do
      ERB.new("Hello <%= name %>").result_with_hash({ name: 'world' })
    end
  end

  benchmark.report("gsub") do
    n.times do
      "Hello {{name}}".gsub('{{name}}', 'world')
    end
  end
end

Gemfile

# frozen_string_literal: true

source "https://rubygems.org"

git_source(:github) {|repo_name| "https://github.com/#{repo_name}" }

gem 'liquid'
gem 'ruby-handlebars'

Results.md

            user       system     total     real
handlebars  25.512891  0.134474   25.647365 ( 26.928544)
liquid      1.622490   0.009660   1.632150  (  1.656763)
erb         2.215501   0.017284   2.232785  (  2.550151)
gsub        0.050991   0.000783   0.051774  (  0.055585)

If anyone is planing to run this benchmark: The labels are flipped. The label for liquid is actually running handlebars and the label for handlebars is actually running liquid.

Good catch! I will update that in a bit

Edit: labels and results updated