redis的bigkey扫描脚本深入介绍

import sys
import redis
 
 
def find_big_key_normal(db_host, db_port, db_password, db_num):
 client = redis.StrictRedis(host=db_host, port=db_port, password=db_password, db=db_num)
 i=0
 temp = client.scan(cursor=i,count=1000)
 j =0
 while temp[0]>0 :
 i=temp[0]
 j=j+len(temp[1])
 try:
  r = client.pipeline(transaction=False)
  for k in temp[1]:
  r.debug_object(k)
  tempA = r.execute()
  x = 0
  for key in tempA:
  length = key.get("serializedlength")
  ##type = key.get("encoding")
  if length > 10240 :
   type = client.type(temp[1][x])
   print temp[1][x], type,length
  x=x+1
 except :
  print "a execption come"
 temp = client.scan(cursor=i,count=1000)
 
 
if __name__ == '__main__':
 if len(sys.argv) != 4:
  print 'Usage: python ', sys.argv[0], ' host port password '
  exit(1)
 db_host = sys.argv[1]
 db_port = sys.argv[2]
 db_password = sys.argv[3]
 r = redis.StrictRedis(host=db_host, port=int(db_port), password=db_password)
 nodecount = 1
 keyspace_info = r.info("keyspace")
 for db in keyspace_info:
 print 'check ', db, ' ', keyspace_info[db]
 find_big_key_normal(db_host, db_port, db_password, db.replace("db", ""))