增加

命令 解释
EXPIRE key seconds 设置一个key的过期的秒数
EXPIREAT key timestamp 设置一个UNIX时间戳的过期时间
PEXPIRE key milliseconds 设置key的有效时间以毫秒为单位
PEXPIREAT key milliseconds-timestamp 设置key的到期UNIX时间戳以毫秒为单位

删除

命令 解释
DEL key [key …] 删除指定的key（一个或多个）
DUMP key 导出key的值
PERSIST key 移除key的过期时间
FLUSHDB 删除当前数据库
FLUSHALL 删除全部数据库

查询

命令 解释
EXISTS key [key …] 查询一个key是否存在
KEYS pattern 查找所有匹配给定的模式的键
KEYS * 查询全部key
SELECT index 切换数据库
PTTL key 获取key的有效毫秒数
TTL key 获取key的有效时间（单位：秒）
TYPE 获取key类型

修改

命令 解释
MOVE key db 移动一个key到另一个数据库
RENAME key newkey 将一个key重命名
RENAMENX key newkey 重命名一个key,新的key必须是不存在的key

其他

http://www.redis.cn/commands.html#generic

  1. help @generic
  3.   DEL key [key ...]
  4.   summary: Delete a key
  5.   since: 1.0.0
  7.   DUMP key
  8.   summary: Return a serialized version of the value stored at the specified key.
  9.   since: 2.6.0
  11.   EXISTS key [key ...]
  12.   summary: Determine if a key exists
  13.   since: 1.0.0
  15.   EXPIRE key seconds
  16.   summary: Set a key's time to live in seconds
  17.   since: 1.0.0
  19.   EXPIREAT key timestamp
  20.   summary: Set the expiration for a key as a UNIX timestamp
  21.   since: 1.2.0
  23.   KEYS pattern
  24.   summary: Find all keys matching the given pattern
  25.   since: 1.0.0
  27.   MIGRATE host port key| destination-db timeout [COPY] [REPLACE] [KEYS key]
  28.   summary: Atomically transfer a key from a Redis instance to another one.
  29.   since: 2.6.0
  31.   MOVE key db
  32.   summary: Move a key to another database
  33.   since: 1.0.0
  35.   OBJECT subcommand [arguments [arguments ...]]
  36.   summary: Inspect the internals of Redis objects
  37.   since: 2.2.3
  39.   PERSIST key
  40.   summary: Remove the expiration from a key
  41.   since: 2.2.0
  43.   PEXPIRE key milliseconds
  44.   summary: Set a key's time to live in milliseconds
  45.   since: 2.6.0
  47.   PEXPIREAT key milliseconds-timestamp
  48.   summary: Set the expiration for a key as a UNIX timestamp specified in milliseconds
  49.   since: 2.6.0
  51.   PTTL key
  52.   summary: Get the time to live for a key in milliseconds
  53.   since: 2.6.0
  55.   RANDOMKEY -
  56.   summary: Return a random key from the keyspace
  57.   since: 1.0.0
  59.   RENAME key newkey
  60.   summary: Rename a key
  61.   since: 1.0.0
  63.   RENAMENX key newkey
  64.   summary: Rename a key, only if the new key does not exist
  65.   since: 1.0.0
  67.   RESTORE key ttl serialized-value [REPLACE]
  68.   summary: Create a key using the provided serialized value, previously obtained using DUMP.
  69.   since: 2.6.0
  71.   SCAN cursor [MATCH pattern] [COUNT count]
  72.   summary: Incrementally iterate the keys space
  73.   since: 2.8.0
  75.   SORT key [BY pattern] [LIMIT offset count] [GET pattern [GET pattern ...]] [ASC|DESC] [ALPHA] [STORE destination]
  76.   summary: Sort the elements in a list, set or sorted set
  77.   since: 1.0.0
  79.   TTL key
  80.   summary: Get the time to live for a key
  81.   since: 1.0.0
  83.   TYPE key
  84.   summary: Determine the type stored at key
  85.   since: 1.0.0
  87.   WAIT numslaves timeout
  88.   summary: Wait for the synchronous replication of all the write commands sent in the context of the current connection
  89.   since: 3.0.0