Redis monitor log parser

redis_monitor_parser.rb

# redis-cli monitor > monitor.txt

puts "Scanning redis log..."

ops = Hash.new(0)

lines = File.readlines('monitor.txt'); true

start_time   = Time.at(lines[1].split(' ').first.to_f)
end_time     = Time.at(lines.last.split(' ').first.to_f)
time_elapsed = end_time - start_time
rps          = (lines.count-1)/time_elapsed

puts "#{time_elapsed}s elapsed"
puts "#{rps} requests per second"

lines.each do |n|
  
  next unless n =~ /"([^"]+)" "([^"]+)"/ # only get commands
  op = $1
  key = $2
#   key = key.gsub(/\d+/,"n")

  ops["#{op.upcase} #{key}"]+=1
end; true

ops.sort_by{|(a,b)| b}.reverse[0..20].each do |(opkey, count)|
  puts "#{count} #{opkey}"
end; true