Trying to create a benchmark for https://github.com/jekyll/jekyll/pull/9776

post-url-liquid-expansion-poc.rb

#!/usr/bin/env ruby
require "liquid"
require "benchmark/ips"
require "jekyll"

puts "Ruby #{RUBY_VERSION}-p#{RUBY_PATCHLEVEL}"
puts "Liquid #{Liquid::VERSION}"

module Testing
  class PostUrlAlways < Liquid::Tag
    include Jekyll::Filters::URLFilters

    def initialize(tag_name, post, tokens)
      super
      @orig_post = post.strip
    end

    def render(context)
      @context = context
      liquid_solved_orig_post = Liquid::Template.parse(@orig_post).render(context)
      return liquid_solved_orig_post
    end
  end
  class PostUrlNever < Liquid::Tag
    include Jekyll::Filters::URLFilters

    def initialize(tag_name, post, tokens)
      super
      @orig_post = post.strip
    end

    def render(context)
      @context = context
      return @orig_post
    end
  end

  class PostUrlConditional < Liquid::Tag
    include Jekyll::Filters::URLFilters

    def initialize(tag_name, post, tokens)
      super
      @orig_post = post.strip
    end

    def render(context)
      @context = context
      content = @orig_post

      return content if content.nil? || content.empty?
      return content unless content.include?("{%") || content.include?("{{")

      liquid_solved_orig_post = Liquid::Template.parse(content).render(context)
      return liquid_solved_orig_post
    end
  end
end

Liquid::Template.register_tag("post_urlish_always", Testing::PostUrlAlways)
Liquid::Template.register_tag("post_urlish_never", Testing::PostUrlNever)
Liquid::Template.register_tag("post_urlish_conditional", Testing::PostUrlConditional)

template1 = '{% post_urlish_always       foo{{bar}}  %}'
template2 = '{% post_urlish_always       foo42       %}'
template3 = '{% post_urlish_never        foo42       %}'
template4 = '{% post_urlish_conditional  foo{{bar}}  %}'
template5 = '{% post_urlish_conditional  foo42       %}'

def render(template)
  Liquid::Template.parse(template).render("bar" => "42")
end

puts render(template1)
puts render(template2)
puts render(template3)
puts render(template4)
puts render(template5)

Benchmark.ips do |x|
  x.report('post_urlish_always, with liquid tag') { render(template1) }
  x.report('post_urlish_always, no liquid tag') { render(template2) }
  x.report('post_urlish_never')  { render(template3) }
  x.report('post_urlish_conditional, with liquid tag')  { render(template4) }
  x.report('post_urlish_conditional, no liquid tag')  { render(template5) }
end

Results:

$ ruby post-url-liquid-expansion-poc.rb
Ruby 3.2.1-p31
Liquid 4.0.4
foo42
foo42
foo42
foo42
foo42
ruby 3.2.1 (2023-02-08 revision 31819e82c8) [arm64-darwin22]
Warming up --------------------------------------
post_urlish_always, with liquid tag
                        10.093k i/100ms
post_urlish_always, no liquid tag
                        14.897k i/100ms
   post_urlish_never    25.130k i/100ms
post_urlish_conditional, with liquid tag
                        11.434k i/100ms
post_urlish_conditional, no liquid tag
                        24.115k i/100ms
Calculating -------------------------------------
post_urlish_always, with liquid tag
                        117.130k (± 4.1%) i/s    (8.54 μs/i) -    585.394k in   5.007115s
post_urlish_always, no liquid tag
                        151.364k (± 2.7%) i/s    (6.61 μs/i) -    759.747k in   5.022965s
   post_urlish_never    243.685k (± 3.5%) i/s    (4.10 μs/i) -      1.231M in   5.059676s
post_urlish_conditional, with liquid tag
                        114.436k (± 3.4%) i/s    (8.74 μs/i) -    571.700k in   5.001618s
post_urlish_conditional, no liquid tag
                        242.989k (± 1.6%) i/s    (4.12 μs/i) -      1.230M in   5.062740s