掃描reids instance中大於10240的key打印出來

find_bigkey.py

#!/usr/bin/python
import sys
import redis
def check_big_key(r, k):
  bigKey = False
  length = 0
  try:
    type = r.type(k)
    if type == "string":
      length = r.strlen(k)
    elif type == "hash":
      length = r.hlen(k)
    elif type == "list":
      length = r.llen(k)
    elif type == "set":
      length = r.scard(k)
    elif type == "zset":
      length = r.zcard(k)
  except:
    return
  if length > 10240:
    bigKey = True
  if bigKey :
    print db,k,type,length
def find_big_key_normal(db_host, db_port, db_num):
  r = redis.StrictRedis(host=db_host, port=db_port, db=db_num)
  for k in r.scan_iter(count=1000):
    check_big_key(r, k)
def find_big_key_sharding(db_host, db_port, db_num, nodecount):
  r = redis.StrictRedis(host=db_host, port=db_port, db=db_num)
  cursor = 0
  for node in range(0, nodecount) :
    while True:
      iscan = r.execute_command("iscan",str(node), str(cursor), "count", "1000")
      for k in iscan[1]:
        check_big_key(r, k)
      cursor = iscan[0]
      print cursor, db, node, len(iscan[1])
      if cursor == "0":
        break;
if __name__ == '__main__':
  if len(sys.argv) != 3:
     print 'Usage: python ', sys.argv[0], ' host port '
     exit(1)
  db_host = sys.argv[1]
  db_port = sys.argv[2]
  r = redis.StrictRedis(host=db_host, port=int(db_port))
  #nodecount = r.info()['nodecount']
  nodecount = 1
  keyspace_info = r.info("keyspace")
  for db in keyspace_info:
    print 'check ', db, ' ', keyspace_info[db]
    if nodecount > 1:
      find_big_key_sharding(db_host, db_port, db.replace("db",""), nodecount)
    else:
      find_big_key_normal(db_host, db_port, db.replace("db", ""))