What happened? It was time to move again! In one of my earlier posts, I have mentioned my move from Blogger to GH-Pages and for that I decided to go with Zola. It was all fine, but after a few months, I wanted to have few additional features for the theme that I was using. It was such a great and a simple theme and …

I had a necessity to generate a PDF document out of a set of jpg images that I had on my local hard drive on my Ubuntu 20.04 Laptop. I came across this simple step on how to do it. Here it is documented: Install img2pdf 1sudo apt-get install -y img2pdf Navigate to the folder that contains your images and run the …

Sometimes you have the need to run a shell script for some basic functions or simple tasks that you want to execute locally on your machine. The goto choice will be to write some shell script (assuming you are on a Linux). Here is a way to do that but use Scala, your favorite language. It is actually quite simple as it …

Definition Simply put, a Bloom filter is a space-efficient probabilistic data structure with which we can determine the probable existence of a certain thing in a certain data set, and we can determine the non-existence of a certain thing in a certain data set with utmost accuracy. Doing all this in a memory space …

If you have forked a repository in GitHub that you want to work on, you do so, make your changes locally and once you are confident that everything works, you issue a pull request to the upstream so that your changes can be reviewed and merged. Here is a small snippet that I use to keep my fork up-to-date with the …

I have been documenting so far with Blogger. Recently I started to do some Robotics projects with ROS. As I was doing it, I was looking for ways to get all what I do be documented. I know Github offers GH Pages, but I was a bit reluctant to try it out. So for the Navo project, I decided that GH Pages will be the source …

Basically a distributed system is one in which the components or processes or nodes that comprise a system is distributed across nodes or sometimes even across geographies. But these systems need to communicate with each other to accomplish something meaningful. The most efficient, scalable and proven way of making …

I have been a happy user of the Travis CI free usage over the last couple of years. But one announcement recently made me deeply worried. Have a look here at their announcement Yes, Travis CI will no longer be free for OSS projects. There is no point in blaming Travis CI for this but rather on those idiots who abused …

It is a good practice to write integration unit tests for your services and integrate them in your CI workflow. Such integration tests boosts the confidence of your application quality especially when it needs to be deployed in an environment where it has to talk to numerous other external services. In this regard, I …