atomic vs pipelined hset

hset_benchmark.rb

require "redis"
require "benchmark"

def setup
  @redis = Redis.new
  @redis.flushdb
end

def teardown
  @redis.flushdb
  @redis.quit
end

def atomic_hset
  setup
  n = 1_000_000
  time = Benchmark.realtime do
    n.times do |i|
      @redis.hset("key#{i}", "field#{i}", "value#{i}")
    end
  end
  teardown
  puts "#{n} Atomic hset: #{time}s"
end

def pipelined_hset
  setup
  n = 1_000_000
  time = Benchmark.realtime do
    @redis.pipelined do
      n.times do |i|
        @redis.hset("key#{i}", "field#{i}", "value#{i}")
      end
    end
  end
  teardown
  puts "#{n} Pipelined hset: #{time}s"
end

atomic_hset
pipelined_hset


# Performance Comparison:
# 
# | Operation | Items | Time (s) |
# |-----------|-------|----------|
# | Atomic hset | 1 million | 397.95090500000515 |
# | Pipelined hset | 1 million | 16.061125000000175 |
# 
# Conclusion:
# Pipelined hset is 24 times faster than atomic hset.