Redis notes (II) operating commands for keys in redis

Yes key The operation of

keys *： View all of the current library  key

exists key： Judge a certain  key  Whether there is 

type key： View your  key  What type is it 

del key ： Delete specified  key  data 

unlink key： according to  value  Select non blocking delete , Only will  keys  from  keyspace  Delete from metadata , The real deletion will be done asynchronously later 

expire key 10 ： For a given  key  Set expiration time 

ttl key： See how many seconds are left to expire ,-1 Never expire ,-2 Indicates that it has expired 

select： Command switch database 

dbsize： Check the... Of the current database  key  The number of 

flushdb： Empty the current library 

flushall： Kill all the warehouses