JavaScript

Hello everyone 👋, In this article, we’ll instrument a simple Node.js API with OpenTelemetry traces. OpenTelemetry is the new standard for distributed tracing and metrics. Trace data is used to monitor and troubleshoot complex distributed systems. At the end of this article, we’ll have a Node.js API that is instrumented with OpenTelemetry and we’ll be able to see the traces in Grafana Tempo: The API Let’s start by setting up our NodeJS project by installing the dependencies:...

Hello 👋, In this short article we’ll talk about packing integers into binary data in JavaScript using the Buffer, ArrayBuffer and DataView classes. Sometimes in JavaScript, it may be necessary to pack the elements of an array into a byte buffer and then create a new numeric array from the buffer’s contents. This can be achieved using the DataView object in JavaScript. First, create an array of elements you want to pack, for example:...

Photo by Tyler Milligan on Unsplash Hello, In this short article I will try to explain what is an HTTP interceptor and how to use it. My article is based on the Angular’s official documentation which I strongly recommend to take a look at, you can find it here: intercepting-requests-and-responses. In case you’re wondering, the contents of this article is valid for Angular 2, 4 and 6, which now is called Angular....