In-depth articles on Node.js, MicroservicesMicroservices are not a tool, rather a way of thinking when building software applications. Let’s begin the explanation with the opposite: if you develop a single, self-contained application and keep improving it as a whole, it’s usually called a monolith. Over time, it’s more and more difficult to maintain and update it without breaking anything, so the development cycle may…, KubernetesKubernetes (often abbreviated as K8s) offers a framework to run distributed systems efficiently. It’s a platform that helps managing containerized workloads and services, and even takes care of scaling. Google open-sourced it in 2014. and DevOps.
Callbacks are necessary because they allow you to queue up multiple I/O processes without having to wait for them to finish. Because these tasks run asynchronously, the app can get done more things at once (if the hardware can handle it). In Node.js, callbacks are used as a function called when a task is finished, and behaves similarly as a notification about the completion of the given task.
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