Introduction to redis and using redis in Python

（ One ）Redis Use

（1） Sign in redis：win+r,cmd, Input redis-cli（ The following content indicates that the link is successful ）（2） Locate the database ：select Data can be numbered ,eg. select 1 ( Switch to db 1 This database )

（ Two ）Redis Basic knowledge explanation

（1） data type String numbers are special strings （String）; Hash Dictionary （Hash）; An ordered list is equivalent to Python Medium List（List）; unordered set （Set）; Ordered set （Zset）（2）Redis Common commands String The object operation ------ lookup ：key[pattern]; Delete ：del[key]; Check for presence ：exists[key]; View key type ：type[key]; Set the value ：set key value; Value ：get keyHash The object operation ------ Set the value ：hset key field（ key ） value（ value ）; Value ：hget key fieldList The object operation ------ Insert... On the left ：Ipush key value; Insert on the right ：rpush key value; Set according to the index ：Iset key index value; Left stack ：Ipop key; Right out of the stack ：Rpop keyset The object operation （ disorder , Can't repeat ）： add to ：sadd key member; Delete specified member：srem key member; see key All of the member：smembers key; Stack randomly count individual member：spop key count; Random check count individual member：srandmember key count; see key in member The number of ：scard key;Zset The object operation ：（ Ordered set ; One key There will not be two identical member; Every member Corresponds to a unique score The weight , Do not put the high weight ahead of the low weight ; With the same weight member, Press the first insert on the left , The rear insert is on the right ; Default to heavy ） add to member and score：zadd key [score member]; Delete member：zrem key [member]; Delete by sort ：zremrangebyrank key start stop; according to score Scope delete ：zremrangebyscore key min max;

（ 3、 ... and ） adopt python operation Redis database

（1） install redis modular ：pip install redis;（2） Guide pack ：import redis（3） establish Redis link ：conn = redis.StrictRedis(host = "localhost",port = 6379,password = "",decode_response = True,)（4） perform Redis sentence ：ret = conn.execyte_command("Redis sentence ")