我最近使用了节点集群模块，现在有一点我很好奇，在把响应发送回用户后，是否强制杀死子进程？我目前的代码是：

app.get('/', (_, res) => {
    res.send('Ok');
    cluster.worker.kill(); //why do i have to kill it?
});

if (cluster.isMaster){
  for (let i = 0; i < cpuCount; i++){
    cluster.fork();
  }
  cluster.on('exit', (worker, code, signal) => {
    console.log(`Worker process with pid: ${worker.process.pid} killed`);
    cluster.fork(); //create a new instance
  });
}else{
  server.listen(port, () => {
      console.log(`TCP Server listening on port ${port} | cpu cores: ${cpuCount} | Master: ${cluster.isMaster} | PID: ${process.pid}`);
  });
}