Redis Universal operation (for String,hash, linked lists, etc.)

 keys pattern query corresponding key in Redis, allow Fuzzy query key has 3 wildcard characters*, ? ,[]*: Wildcard with any number of characters?: Wildcard single character []: wildcard 1 characters in parentheses Redis127.0.0.1:6379>Flushdbokredis127.0.0.1:6379> Keys *//Check All(empty list or set) Redis127.0.0.1:6379> Mset One 1 2 three 3 four 4Okredis127.0.0.1:6379> keys o*1) "One"Redis127.0.0.1:6379> keys *o1) "Both"Redis127.0.0.1:6379> Keys??? 1) "One" 2) "one"Redis127.0.0.1:6379> keys on?1) "One"Redis127.0.0.1:6379>Set ONS yesokredis127.0.0.1:6379>Keys ON[EAW]1) "One"

Randomkey return random key (draw, haha)127.0.0.1:6379> randomkey"three"

the Type key returns the value stored by key with String,link,set,order set, hash127.0.0.1:6379> type onestring

exists key determines if key exists, returns 1/0127.0.0.1:6379>1127.0.0.1:6379>0

del key1 Key2 ... Keyn Effect: Delete 1 or more key return values: The nonexistent key is ignored, returning the number of really deleted keys 127.0.0.1:6379>1

Rename key Newkey function: Give key a new key name note: If Newkey already exists, then Newkey's original value is overwritten 127.0.0.1:6379>127.0.0.1:6379 >0127.0.0.1:6379>1
Redis 127.0.0.1:6379> Set Site "www.baidu.com"
Ok
Redis 127.0.0.1:6379> Set Search "www.sohu.com"
Ok
Redis 127.0.0.1:6379> Rename Site search
Ok
Redis 127.0.0.1:6379> Get Search
"Www.baidu.com"-------the original value of search is overwritten

Renamenx key Newkey  function: Rename key to Newkey return: change occurred return 1, no modification returned 0 Note: nx-->   NOT exists, that is, Newkey does not exist, Newkey does not exist, change, exist, do not change the name of the action

default database is DB 0, you can select# a different one on a per-connection basis using Select <DBI D>0 and ' databases '-1Redis opens 16 databases by default, number 0-15127.0.0.1:6379> keys *) " Site "127.0.0.1:6379> Select 1127.0.0.1:6379[1]> keys *Select 0  127.0.0.1:6379> Keys *) "Site"

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(Note: A Redis process that opens more than one database, opens 16 databases by default, numbering from 0 to 15, can be modified from a configuration file if you want to open more databases)

move key db127.0.0.1:6379> keys *) "site" 2) "Search"127.0.0.1:6379> Move site 11 /c5>127.0.0.1:6379> keys) "Search"127.0.0.1:6379> Select 1127.0.0.1:6379[1]> keys *) " Site

 ttl key function: Query Key's life cycle return: seconds Note: For nonexistent key or expired key/key, return-1  redis2.8, for a nonexistent key, returns the  -2redis  127.0.0.1:6379> TTL search (integer) -1 

expire Key integer value: Sets the lifetime of the key, in seconds: Pexpire key milliseconds, sets the lifecycle Pttl  key, returns the life cycle in milliseconds 127.0.0.1:6379>  -1127.0.0.1:6379> expire Search 51127.0.0.1:6379> get Search" www.google.com "127.0.0.1:6379>127.0.0.1:6379>-1

127.0.0.1:6379>0

Redis Universal operation (for String,hash, linked lists, etc.)