redis-experiments.rb

require 'redis'
require 'benchmark'
 
hash = {}
array = nil
redis = Redis.new
n_values = 720
 
redis.del redis.keys("demo:*")
 
Benchmark.bmbm do |x|
  x.report("Setting #{n_values} hash keys")             { n_values.times { |i|  hash["demo:#{i}"] = 100 } }
  x.report("Setting #{n_values} Redis keys")            { n_values.times { |i| redis["demo:#{i}"] = 100 } }
  x.report("Setting array with #{n_values} values")     { array = [100] * (n_values - 1) }
  x.report("Setting Redis list with #{n_values} items") { redis.lpush("demo:list", [100] * (n_values -1 )) }
  x.report("Getting #{n_values} hash keys")             { n_values.times { |i| hash["demo:#{i}"] } }
  x.report("Getting array with #{n_values} values")     { array }
  x.report("Getting #{n_values} Redis keys")            { n_values.times { |i| redis["demo:#{i}"] } }
  x.report("Getting Redis list with #{n_values} items") { redis.lrange("demo:list", 0, n_values - 1) }
end

# Rehearsal ---------------------------------------------------------------------
# Setting 720 hash keys               0.000000   0.000000   0.000000 (  0.001193)
# Setting 720 Redis keys              0.070000   0.030000   0.100000 (  0.115302)
# Setting array with 720 values       0.000000   0.000000   0.000000 (  0.000010)
# Setting Redis list with 720 items   0.000000   0.000000   0.000000 (  0.001569)
# Getting 720 hash keys               0.000000   0.000000   0.000000 (  0.000472)
# Getting array with 720 values       0.000000   0.000000   0.000000 (  0.000004)
# Getting 720 Redis keys              0.080000   0.020000   0.100000 (  0.109003)
# Getting Redis list with 720 items   0.000000   0.000000   0.000000 (  0.004252)
# ------------------------------------------------------------ total: 0.200000sec
# 
#                                         user     system      total        real
# Setting 720 hash keys               0.000000   0.000000   0.000000 (  0.000516)
# Setting 720 Redis keys              0.050000   0.020000   0.070000 (  0.088360)
# Setting array with 720 values       0.000000   0.000000   0.000000 (  0.000018)
# Setting Redis list with 720 items   0.000000   0.000000   0.000000 (  0.001383)
# Getting 720 hash keys               0.000000   0.000000   0.000000 (  0.000414)
# Getting array with 720 values       0.000000   0.000000   0.000000 (  0.000005)
# Getting 720 Redis keys              0.050000   0.020000   0.070000 (  0.086625)
# Getting Redis list with 720 items   0.000000   0.000000   0.000000 (  0.004241)