brpoplpush method
BRPOPLPUSH is the blocking variant of RPOPLPUSH. When source contains elements, this command behaves exactly like RPOPLPUSH. When used inside a MULTI/EXEC block, this command behaves exactly like RPOPLPUSH. When source is empty, Redis will block the connection until another client pushes to it or until timeout is reached. A timeout of zero can be used to block indefinitely.
See RPOPLPUSH for more information.
Returns the element being popped from source and pushed to destination. If timeout is reached, a Null reply is returned.
Implementation
Future<String?> brpoplpush(String source, String destination, int timeout) async {
final result = (await tier1.brpoplpush(source, destination, timeout));
return result.handleAs(
bulk: (type) => type.payload,
array: (_) => null,
);
}