We recently completed a migration from supervisor to pebble on our production hosts. In this article, we will share how we set it up, why we did so, and what we anticipate forward for our infrastructure moving forward. At NNDI we build systems that typically run on Linux based operating systems, though we have also shipped Windows services as part of our Consulting Work. Most of our services are built with Go and so far we have taken advantage of Go’s ability to build single binaries to power our simple deployment pipeline which involves just taking the binary and putting it on the server. [Read More]

In this article we will see how we can export metrics from Spark Java so that Prometheus can scrape them for application monitoring purposes. [Read More]

zefaker is a command-line tool that is especially useful for generating test files for when you're developing or testing data pipelines. It enables you to generate random data into SQL, CSV, Excel and JSON files via a simple Groovy script. [Read More]

Using Java 16 and Project Loom's Virtual Threads to power a simple Spark Java application. [Read More]

In this guide you will learn how to combine a VueJS front-end with a Java backend. We will achieve this using a custom vue-cli configuration and directory structure. You will also see how to use a maven plugin to help build the Vue app during the package phase of the maven build process, so that you do not have to run two commands to build the final application, which we will bundle as an uber jar. [Read More]

In this short guide you are going to see how to write to multiple files at-once in Java. The technique you will see here will allow you to write the same data to multiple output streams in one go, which will keep your code shorter, readable and safer from errors that can come through copy-and-pasting. The rationale First of all, why would you want to write to multiple output streams at once? [Read More]