# Raft Leader Elect __*election timeout*__ __*heartbeat time interval*__ __*raft-heartbeat-ticks*__ __*raft-election-timeout-ticks*__ __*raft-base-tick-interval*__ + election timeout: raft-election-timeout-ticks + heartbeat time interval: raft-heartbeat-ticks + raft-heartbeat-ticks * raft-base-tick-interval + raft-election-timeout-ticks * raft-base-tick-interval ------------------------------------------------------------ Let's take a look at a few time concepts and parameters. First, we call election timeout, which indicates how long it takes for a node to initiate an elect in an unowned state. The corresponding parameter is raft-election-timeout-ticks, and the default value is 10. Another concept is the heartbeat time interval, which indicates the number of ticks passed when sending a heartbeat. The corresponding parameter is raft-heartbeat-ticks, and the default value is 2. Note that these 2 parameters are all expressed by the number of ticks, so how long does a tick indicate, the time corresponding to one tick is indicated by the parameter raft-base-tick-interval, and its default value is 1 second.