redis 帮助

127.0.0.1:6379> help
redis-cli 3.0.4
Type: "help @<group>" to get a list of commands in <group>
      "help <command>" for help on <command>
      "help <tab>" to get a list of possible help topics
      "quit" to exit
127.0.0.1:6379> help APPEND(help 具体命令)

  APPEND key value
  summary: Append a value to a key
  since: 2.0.0
  group: string

 127.0.0.1:6379> help @generic(help @tab键)

 

常用命令

 

string

127.0.0.1:6379> help set

  SET key value [EX seconds] [PX milliseconds] [NX|XX]
  summary: Set the string value of a key
  since: 1.0.0
  group: string

 

set

127.0.0.1:6379> set disto fedora
OK
127.0.0.1:6379> get disto
"fedora"
127.0.0.1:6379> APPEND disto slackware
(integer) 15
127.0.0.1:6379> get disto
"fedoraslackware"
127.0.0.1:6379> STRLEN disto
(integer) 15
127.0.0.1:6379> set count 0
OK
127.0.0.1:6379> INCR count (比如微博被转载的次数,每次加1)
(integer) 1
127.0.0.1:6379> INCR count
(integer) 2
127.0.0.1:6379> INCR count
(integer) 3
127.0.0.1:6379> DECR count(每次减1)
(integer) 2
127.0.0.1:6379> DECR count
(integer) 1

127.0.0.1:6379> help SETEX


SETEX key seconds value //设置建的过期时间
summary: Set the value and expiration of a key
since: 2.0.0
group: string

127.0.0.1:6379> help SETNX

SETNX key value //当键不存在时,设置值
summary: Set the value of a key, only if the key does not exist
since: 1.0.0
group: string




 

get

exists