## KEY COMMANDS

1DEL key  
This command deletes the key, if it exists.

2DUMP key  
This command returns a serialized version of the value stored at the specified key.

3EXISTS key  
This command checks whether the key exists or not.

4EXPIRE key seconds  
Sets the expiry of the key after the specified time.

5EXPIREAT key timestamp  
Sets the expiry of the key after the specified time. Here time is in Unix timestamp format.

6PEXPIRE key milliseconds  
Set the expiry of key in milliseconds.

7PEXPIREAT key milliseconds-timestamp  
Sets the expiry of the key in Unix timestamp specified as milliseconds.

8KEYS pattern  
Finds all keys matching the specified pattern.

9MOVE key db  
Moves a key to another database.

10PERSIST key  
Removes the expiration from the key.

11PTTL key  
Gets the remaining time in keys expiry in milliseconds.

12TTL key  
Gets the remaining time in keys expiry.

13RANDOMKEY  
Returns a random key from Redis.

14RENAME key newkey  
Changes the key name.

15RENAMENX key newkey  
Renames the key, if a new key doesn't exist.

16TYPE key  
Returns the data type of the value stored in the key.