Redis_Keys common operations

1. View all keys

• keys *

2. View the keys at the beginning of a field

• keys field? For example: keys class? View, the keys at the beginning of the class field

3. Delete a key

• del key1 、 key2 、 key3 ...

4. Determine whether a key exists

• The exists key name returns (int) 1, if it does not exist, returns (int) 0

5. Rename a key

• rename key name new key name

6. Add expiration time to the key

• expire key name time (seconds)

7. Check the expiration time of a key

• ttl key name

8. View the type of a key

• type key名