Setting and getting a key in redis

Delete key in redis

- Delete all keys using command flushall
- Delete all keys in a key-space using command flushdb
- Deleting all keys asynchronously
- unlink key1 key2 key3
Check if a key exists

Renaming a key
Renaming a key

Overrding a keyname

Rename with check if key exist

How find type of a key
