関連ワード:  asynchronous programming in node js    explain asynchronous programming in node js    synchronous and asynchronous programming in node js    asynchronous programming and callbacks in node js    async await example in node js    difference between synchronous and asynchronous programming in node js    how does asynchronous programming work in node js    how do you handle asynchronous programming in node js    what is the purpose of asynchronous programming in node.js    why node js is asynchronous