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
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