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app_multi_thread.js
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app_multi_thread.js
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const express = require("express");
const { Worker } = require("worker_threads");
const app = express();
const runThread = (num) => {
return new Promise((resolve, reject) => {
//Create new worker
const worker = new Worker("./worker.js", { workerData: { num: num } });
//Listen for a message from worker
worker.once("message", resolve);
worker.on("error", reject);
worker.on("exit", (exitCode) => {
console.log(exitCode);
});
});
};
app.get("/", (req, res) => {
res.send("Server is up and running ;)");
});
app.get("/calculatefib/:num", (req, res) => {
const num = req.params.num;
const startTime = Date.now();
runThread(num)
.then((result) => {
const endTime = Date.now();
res.send(
`Calculated Fib with the result of: ${result}, it took ${
(endTime - startTime) / 1000
} secs.`
);
})
.catch((err) => {
console.log(err);
res.send(err);
});
});
app.listen(2000, () =>
console.log("Multi thread server is running on port 2000")
);