127.0.0.1:6379> setnx mykey "good"

127.0.0.1:6379> setnx mykey "morning"

127.0.0.1:6379>get mykey

127.0.0.1:6379>append  abc  love

127.0.0.1:6379>append abc you

127.0.0.1:6379>get abc

127.0.0.1:6379>STRLEN abc

127.0.0.1:6379> getset db mongodb      (显示结果为 nil ) 

127.0.0.1:6379> get db

127.0.0.1:6379> getset db redis

127.0.0.1:6379> get db

127.0.0.1:6379> flushdb

127.0.0.1:6379> Lpush list "one"

127.0.0.1:6379> Lpush list "two"

127.0.0.1:6379> Rpush list "three"

127.0.0.1:6379>Lpop list

127.0.0.1:6379>Lrange list 0 1

127.0.0.1:6379>flushdb

127.0.0.1:6379> RPUSH mylist "hello"

127.0.0.1:6379> RPUSH mylist "hello1"

127.0.0.1:6379> RPUSH mylist "hello2"

127.0.0.1:6379> RPUSH mylist "hello3"

127.0.0.1:6379> ltrim mylist 2 3

127.0.0.1:6379> lrange mylist 0 -1

127.0.0.1:6379> hset myhash field1 “good"

127.0.0.1:6379> HMSET myhash field1 “Hello” field2 “World“   

127.0.0.1:6379> HSETNX myhash2 field3 "hello" （返回1）

127.0.0.1:6379> HSETNX myhash2 field3 "world"

127.0.0.1:6379> HGET myhash2 field3

127.0.0.1:6379> zadd salary 2500 xm

127.0.0.1:6379> zadd salary 5000 xh

127.0.0.1:6379> zadd salary 500 xg

127.0.0.1:6379> ZREVRANK salary xg