Redis获取某个大key值的脚本实例

#!/usr/bin/env python# -*- coding: UTF-8 -*- #功能：扫描某个key里面的所有元素#使用方法：python bigkey_save_values.py "zyyset" "m*" 100#如需获取全部的元素：python bigkey_save_values.py "zyyset" "*" 100__author__ = "lcl" import sysimport redis import os pool=redis.ConnectionPool(host='192.168.225.128',port=6379,db=0) r = redis.StrictRedis(connection_pool=pool) #指定keykey = sys.argv[1]#扫描匹配值match = sys.argv[2]#每次匹配数量count = sys.argv[3]#总数量total = 0#获取当前路径path = os.getcwd()keytype = r.type(key)print "key的类型为%s" % (keytype)#扫描到的key输出的文件txt = path+"/%s.txt" % (key)#打开文件#f = open(txt,"w")def list_iter(name): list_count = r.llen(key) for index in range(list_count):  yield r.lindex(key, index)if keytype=='list': f = open(txt,"w") for item in list_iter(key):#将匹配到对应key中的member/score输出到文件中  f.write("%s %s" % (item,"/n"))  total = total+1 f.closeelif keytype=='hash': f = open(txt,"w") for item in r.hscan_iter(key,match = match,count = count):#将匹配到对应key中的member/score输出到文件中  f.write("%s %s" % (item,"/n"))  total = total+1 f.closeelif keytype=='set': f = open(txt,"w") for item in r.sscan_iter(key,match = match,count = count):  f.write("%s %s" % (item,"/n"))  total = total+1 f.closeelif keytype=='zset': f = open(txt,"w") for item in r.zscan_iter(key,match = match,count = count):  f.write("%s %s" % (item,"/n"))  total = total+1 f.closeelse: print("key的类型为string，value为：" + r.get(key))print "key:%s的match：%s的数量为：%d" % (key,match,total)