memcache-bench.rb

require 'benchmark/ips'
require 'active_support/cache'
require 'memcached'
require 'active_support/cache/memcached_store'
require 'active_support/cache/dalli_store'

$dalli = ActiveSupport::Cache::DalliStore.new('127.0.0.1:11211')
$memcached = ActiveSupport::Cache::MemcachedStore.new('127.0.0.1:11211')

KEY = 'somekey'
SMALL_VALUE = 'a' * 30
BIG_VALUE = 'a' * 100_000

$dalli.write(KEY, BIG_VALUE)
$memcached.write(KEY, BIG_VALUE)

Benchmark.ips do |x|
  x.report('dalli:read') { $dalli.read(KEY) }
  x.report('memcached:read') { $memcached.read(KEY) }

  x.report('dalli:write') { $dalli.write(KEY, SMALL_VALUE) }
  x.report('memcached:write') { $memcached.write(KEY, SMALL_VALUE) }

  x.report('dalli:write-big') { $dalli.write(KEY, BIG_VALUE) }
  x.report('memcached:write-big') { $memcached.write(KEY, BIG_VALUE) }
end

results.txt

\Calculating -------------------------------------
          dalli:read   581.000  i/100ms
      memcached:read   583.000  i/100ms
         dalli:write     1.126k i/100ms
     memcached:write     1.187k i/100ms
     dalli:write-big   367.000  i/100ms
 memcached:write-big   486.000  i/100ms
-------------------------------------------------
          dalli:read      6.232k (± 4.9%) i/s -     31.374k
      memcached:read      6.120k (± 4.0%) i/s -     30.899k
         dalli:write     11.337k (±14.0%) i/s -     55.174k
     memcached:write     12.656k (± 8.8%) i/s -     62.911k
     dalli:write-big      3.792k (± 2.3%) i/s -     19.084k
 memcached:write-big      4.668k (± 9.2%) i/s -     23.328k