TYPE
Syntax
1. TYPE key
Time complexity: O(1)
Returns the string representation of the type of the value stored at key. The different types that can be returned are: string, list, set, zset, hash, stream and ReJSON-RL.
Return
Simple string reply: type of key, or none when key does not exist.
Examples
1. dragonfly> SET key1 "value"
2. "OK"
3. dragonfly> LPUSH key2 "value"
4. (integer) 1
5. dragonfly> SADD key3 "value"
6. (integer) 1
7. dragonfly> TYPE key1
8. "string"
9. dragonfly> TYPE key2
10. "list"
11. dragonfly> TYPE key3
12. "set"
