Dalli pipelining performance comparison

double_multi_block_results.txt

# Two separate multi blocks are used, the first leveraging `get_multi`

Calculating -------------------------------------
               fetch        19 i/100ms
         fetch_multi        78 i/100ms
-------------------------------------------------
               fetch      192.2 (±2.1%) i/s -        969 in   5.044695s
         fetch_multi      759.7 (±2.5%) i/s -       3822 in   5.034430s

pipelining_perf.rb

require 'dalli'
require 'active_support/json'
require 'active_support/cache'
require 'active_support/cache/dalli_store'
require 'benchmark/ips'

client  = ActiveSupport::Cache::DalliStore.new('localhost', namespace: 'pipelining-bm')
objects = 30.times.inject({}) do |hash, i|
  hash[i.to_s] = { id: i, value: 'abcdefg' }
  hash
end

GC.disable

Benchmark.ips do |x|
  x.report('fetch') do
    objects.each do |key, object|
      client.fetch(key) { object[:value] }
    end

    client.clear
  end

  x.report('fetch_multi') do
    client.fetch_multi(*objects.keys) do |key|
      objects[key][:value]
    end

    client.clear
  end
end

single_multi_block_results.txt

# All read/write operations wrapped inside of a single multi block

Calculating -------------------------------------
               fetch        19 i/100ms
         fetch_multi        33 i/100ms
-------------------------------------------------
               fetch      195.8 (±1.0%) i/s -        988 in   5.045953s
         fetch_multi      335.3 (±0.9%) i/s -       1683 in   5.020209s