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IEEE/ICACT20250172 Question.1 Questioner: zzm80164@pcnw3.ee.ncku.edu.tw 2025-02-09 오후 9:02:06	IEEE/ICACT20250172 Answer.1 Answer by Auhor lsqbit@163.com 2025-02-09 오후 9:02:06
In the fourth step, it is stated that a node is removed or a backup cluster head takes over after three consecutive missed 'hello' messages. Is there any theoretical or empirical basis for selecting three as the threshold, and how was this value determined?	The threshold of missing the "hello" message three times in a row is a balanced value derived from considering factors like fault tolerance, network stability, and system response speed. This threshold not only accommodates certain network jitter and latency but also ensures that the system can promptly detect and respond to actual node failures. Many distributed protocols, such as the Raft protocol, have validated that three lost messages are a balanced setting that is neither too sensitive nor too loose, effectively managing node failures and cluster stability.

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