标签：
Redis数据类型
官网说明文档：http://www.redis.io/topics/data-types-intro
Redis keys
Redis keys are binary safe, this means that you can use any binary sequence as a key, from a string like "foo" to the content of a JPEG file. The empty string is also a valid key.
Redis key是二进制安全的，这意味着你可以使用任何二进制序列作为一个key，从一个字符串”foo”到JPEG文件的内容。空字符串也是合法的key。
规则
Redis客户端 Redis-Cli
查看帮助
redis-cli --help
指定数据块编号
redis-cli -n 0
获取命令的帮助信息
官网帮助文档：http://www.redis.io/commands
help @string 获取数据类型string的相关操作命令
help @list 获取数据类型list的相关操作命令
help set
help <tab>键 有提示信息
这里简单介绍下String类型：
help @string
APPEND key value summary: Append a value to a key since: 2.0.0 BITCOUNT key [start] [end] summary: Count set bits in a string since: 2.6.0 BITOP operation destkey key [key ...] summary: Perform bitwise operations between strings since: 2.6.0 BITPOS key bit [start] [end] summary: Find first bit set or clear in a string since: 2.8.7 DECR key summary: Decrement the integer value of a key by one since: 1.0.0 DECRBY key decrement summary: Decrement the integer value of a key by the given number since: 1.0.0 GET key summary: Get the value of a key since: 1.0.0 GETBIT key offset summary: Returns the bit value at offset in the string value stored at key since: 2.2.0 GETRANGE key start end summary: Get a substring of the string stored at a key since: 2.4.0 GETSET key value summary: Set the string value of a key and return its old value since: 1.0.0 INCR key summary: Increment the integer value of a key by one since: 1.0.0 INCRBY key increment summary: Increment the integer value of a key by the given amount since: 1.0.0 INCRBYFLOAT key increment summary: Increment the float value of a key by the given amount since: 2.6.0 MGET key [key ...] summary: Get the values of all the given keys since: 1.0.0 MSET key value [key value ...] summary: Set multiple keys to multiple values since: 1.0.1 MSETNX key value [key value ...] summary: Set multiple keys to multiple values, only if none of the keys exist since: 1.0.1 PSETEX key milliseconds value summary: Set the value and expiration in milliseconds of a key since: 2.6.0 SET key value [EX seconds] [PX milliseconds] [NX|XX] summary: Set the string value of a key since: 1.0.0 SETBIT key offset value summary: Sets or clears the bit at offset in the string value stored at key since: 2.2.0 SETEX key seconds value summary: Set the value and expiration of a key since: 2.0.0 SETNX key value summary: Set the value of a key, only if the key does not exist since: 1.0.0 SETRANGE key offset value summary: Overwrite part of a string at key starting at the specified offset since: 2.2.0 STRLEN key summary: Get the length of the value stored in a key since: 2.2.0
设置Key-value值
SET key value [EX seconds] [PX milliseconds] [NX|XX]
EX 过期时间，秒 等同于 SETEX key seconds value
PX 过期时间，毫秒 等同于 PSETEX key milliseconds value
NX 键不存在，才能设置 等同于 SETNX key value
XX 键存在时，才能设置
设置多个Key和value
MSET key value [key value ...]
MSETNX key value [key value ...] 键不存在时，才设置值
过期设置
设置多少秒或毫秒后过期
EXPIRE key seconds 秒
PEXPIRE key milliseconds 毫秒
设置在指定unix时间戳过期
EXPIREAT key timestamp 秒
PEXPIREAT key milliseconds-timestamp 毫秒
PERSIST key 删除过期的key
查看剩余时间
TTL key
PTTL key
-1 没有设置TTL
-2找有找到key
查找key
KEYS pattern
*任意长度字符
？任意一个字符
[]字符集合
增量计数
INCR key
例子：
set counter 100
INCR counter
101
INCRBY key increment 根据给定的值进行增量计数
DECR key
DECRBY key increment
标签：
原文地址：http://www.cnblogs.com/one--way/p/5733833.html
