bench.rb

require 'benchmark'
require 'securerandom'

require_relative './dict'

RANDOM_BYTES = SecureRandom.bytes(16)

def setup_dict(size)
  dict = BYORedis::Dict.new
  size.times { |i| dict[i.to_s] = i.to_s }
  dict
end

def dict_exp(dict, n, size)
  n.times do
    r = rand size
    dict[r.to_s]
  end
end

def setup_arr(size)
  arr = []
  size.times { |i| arr << [ i.to_s, i.to_s ] }
  arr
end

def array_exp(arr, n, size)
  n.times do
    r = rand size
    arr.each { |a| break if a[0] == r.to_s }
  end
end

Benchmark.bm do |x|
  n = 1000
  size = 256
  dict = setup_dict(size)
  arr = setup_arr(size)
  x.report { dict_exp(dict, n, size) }
  x.report { array_exp(arr, n, size) }
end

res

~/dev/redis-in-ruby/code/chapter-7 chapter-7* ⇡
❯ ruby benchmark.rb
       user     system      total        real
   0.021310   0.000308   0.021618 (  0.022059)
   0.022467   0.000290   0.022757 (  0.023007)

~/dev/redis-in-ruby/code/chapter-7 chapter-7* ⇡
❯ ruby benchmark.rb
       user     system      total        real
   0.022083   0.000222   0.022305 (  0.022594)
   0.022991   0.000163   0.023154 (  0.023313)

~/dev/redis-in-ruby/code/chapter-7 chapter-7* ⇡
❯ ruby benchmark.rb
       user     system      total        real
   0.021011   0.000173   0.021184 (  0.021383)
   0.023750   0.000293   0.024043 (  0.024316)

~/dev/redis-in-ruby/code/chapter-7 chapter-7* ⇡
❯ ruby benchmark.rb
       user     system      total        real
   0.021394   0.000167   0.021561 (  0.021772)
   0.021975   0.000188   0.022163 (  0.022321)

~/dev/redis-in-ruby/code/chapter-7 chapter-7* ⇡
❯ ruby benchmark.rb
       user     system      total        real
   0.020863   0.000116   0.020979 (  0.021092)
   0.021790   0.000196   0.021986 (  0.022155)

~/dev/redis-in-ruby/code/chapter-7 chapter-7* ⇡
❯ ruby benchmark.rb
       user     system      total        real
   0.021434   0.000139   0.021573 (  0.021746)
   0.023045   0.000238   0.023283 (  0.023473)

~/dev/redis-in-ruby/code/chapter-7 chapter-7* ⇡
❯ ruby benchmark.rb
       user     system      total        real
   0.019905   0.000096   0.020001 (  0.020089)
   0.024888   0.000241   0.025129 (  0.025634)

~/dev/redis-in-ruby/code/chapter-7 chapter-7* ⇡
❯ ruby benchmark.rb
       user     system      total        real
   0.023226   0.000229   0.023455 (  0.024171)
   0.028914   0.000278   0.029192 (  0.029885)

~/dev/redis-in-ruby/code/chapter-7 chapter-7* ⇡
❯ ruby benchmark.rb
       user     system      total        real
   0.027375   0.000214   0.027589 (  0.028001)
   0.022193   0.000206   0.022399 (  0.022571)

~/dev/redis-in-ruby/code/chapter-7 chapter-7* ⇡
❯ ruby benchmark.rb
       user     system      total        real
   0.020572   0.000100   0.020672 (  0.020837)
   0.024418   0.000204   0.024622 (  0.024827)