【程式語言 - NodeJS】使用Nodejs Cluster打破單線程的限制

如何實做?

// server.js
const cluster = require('cluster');
const cpuNums = require('os').cpus().length;
const http = require('http');
if (cluster.isMaster) {
    console.info(`cpu: ${cpuNums}`);
    for (var i = 0; i < cpuNums; i++) {
        cluster.fork();
    }
} else {
    http.createServer(function(req, res) {
        res.end(`response from worker ${process.pid}`);
    }).listen(5000);
    console.log(`Worker ${process.pid} started`);
}

for ((i = 1; i <= 8; i++)); do
    curl <http://127.0.0.1:5000>
    echo ""
done

response from worker 7872
response from worker 7878
response from worker 7886
response from worker 7893
response from worker 7853
response from worker 7860
response from worker 7855
response from worker 7866

如何將請求分發到多個worker

process之間的通訊

// worker 發送訊息
process.send('讀取訊息');// master 接收消息 -> 處理 -> 回應
cluster.on('online', function (worker) {
     // worker建立時，開始監聽message事件
     cluster.workers[id].on('message', function(data) {
          // 處理來自worker發送的資料
          // 回傳給worker
          cluster.workers[id].send('result')
     });
});