Redis key operation

operation key

• keys * : View all... Of the current library key

• exists key: Judge a certain key Whether there is

• type key: Judge key What type is it

• del key: Delete the specified key The data of

• unlink key: Asynchronously delete the specified key( Only will keys from keyspace Delete from metadata , The real deletion will be done asynchronously later )

• expire key 10: Set up key The expiration date is 10s

• ttl key: see key How much more? s Be overdue ,-1 Represents never expires ,-2 Indicates that it has expired

• select db: Switch to the specified library

• dbsize: View the current library's key Number

• flushdb: Empty the current library

• flushall: Empty all libraries