MGET key [key ...]
Available since: 1.0.0
Time complexity: O(N) where N is the number of keys to retrieve.
ACL categories:
@read
@string
@fast
Returns the values of all specified keys.
For every key that does not hold a string value or does not exist, the special
value nil is returned.
Because of this, the operation never fails.
Return
Array reply: list of values at the specified keys.