What is TickTuple in Storm?

In Storm, TickTuple is a special type of tuple used to send heartbeat signals to Spouts and Bolts. The purpose of TickTuple is to trigger timed events, such as executing certain operations or sending data at regular intervals. TickTuple can help the system implement scheduling and monitoring functions. In a topology, the frequency of TickTuple can be set to control the interval at which timed events are triggered. TickTuple typically does not contain actual data, it is only used for signaling.