redis_study/utils/srandmember/showfreq.rb
2020-09-05 12:01:22 +08:00

24 lines
424 B
Ruby

require 'redis'
r = Redis.new
r.select(9)
r.del("myset");
r.sadd("myset",(0..999).to_a)
freq = {}
500.times {
res = r.pipelined {
1000.times {
r.srandmember("myset")
}
}
res.each{|ele|
freq[ele] = 0 if freq[ele] == nil
freq[ele] += 1
}
}
# Print the frequency each element was yeld to process it with gnuplot
freq.each{|item,count|
puts "#{item} #{count}"
}