PING
Ping the server; returns PONG or echoes the optional message.
PING [message]Complexity
O(1)
Complexity and compatibility are read out of kevy's implementation, not copied from Redis's reference. Several genuinely differ.
Redis compatibility
Differs
kevy has no RESP2 subscriber mode, so PING while subscribed does not switch to the array form and non-pubsub commands stay legal on a subscribed connection