Early Releases: Single-key request only. Requests with multiple keys are not yet supported.
DEL key [key ...]
This command deletes the given
keydoes not exist, it is ignored and not counted toward the total number of removed keys.
Returns number of keys that were removed.
$ SET yuga1 "America"
$ SET yuga2 "Africa"
$ DEL yuga1 yuga2 not_a_key