LavikEXISTS
Counts existing keys among the supplied names.
Keys & expiration · Example verified
Syntax covered here
EXISTS key [key ...]A mixed request containing one present key and one missing key counts only the present key.
Tested example & replies
Requests below run in order against an empty database. Each connection authenticates with the fixture password first. Quoted values are strings; null is a nil reply; arrays preserve RESP order.
# connection: default
> SET sample value
"OK"
# connection: default
> EXISTS sample missing
1