Harsimran Kaur - Software Consulting and Contracting

Interfaces in Golang

In my few years of using Golang, I’ve come across several discussions involving the use of interfaces. The arguments range from: Why are we not defining interfaces with the type definition like in typical static languages like C++, Java etc ?Should this package export interface in combination with the

Arch Linux

How I brought my dead computer back to life.

I have a great relationship with the New Year. I am not much of a planner, but nature has its way of planning a bumpy ride for me for the first few days of every year. On my second day at work as the year started, my computer refused to

Docker

How to debug a docker image.

Ever came across a time when a docker image just wouldn't build successfully? Even after putting band-aids and patches all over the place and dropping jargon of list and print commands in between, you're not able to see where exactly it went wrong. I had been through the same situation

Ansible

Add log rotation for a service running in linux using Ansible

Ansible is an IT automation tool that can automate cloud provisioning, configuration management, application deployment and other automation needs. In order to have a brief overview of how Ansible works and how is it different from other automation tools, one can watch this video. Log rotation is an automated process

TDD

My takeaways from Kent Beck's Test-Driven Development - Part I

I have been reading Kent Beck's Book: TEST-DRIVEN DEVELOPMENT By Example for some time and am writing my takeaways from it. Before saying anything, I would like to answer the question Why? Why TDD at first place? It's a very BASIC question, but it's a general observation that people who

Docker

Run nginx as unprivileged user in Docker container on Kubernetes

While on production, it is important to run your containers as non root users to avoid any security vulnerabilities. The rationaleFrom security perspective, running a process on container as root user is as bad as running a process as root on host machine itself. If a user manages to break

Load Testing

Load testing tool comparison: Siege vs Apache JMeter.

Why load test?Imagine a scenario where people are waiting at the airport to do the COVID-19 test before they could get home. And the only way they can register for that test is by using your app. Now imagine their frustration if your app fails to load, or some

Web Hosting

Step by Step Guide: Host your own website.

In this technical era, everyone has at least once in their life thought about creating a website and showcasing it to the world. Is it your pet project? A business idea you want to test? Or just a skill you you want to acquire for future use? A lot of

Load Testing

Load Testing with Apache JMeter.

Now that we have learnt about the difference between Siege and Apache JMeter in the previous article, it’s time to talk about running basic HTTP api load tests with JMeter. JMeter is a pure Java application and should run correctly on any system that has a compatible Java implementation.

Docker

How to optimise docker images for lesser build size and time.

Docker, as we all know, is the most popular tool for creating containerised applications these days. The more I use it, the more I fall in love with the concept. As easy as it is for even the beginners to write a Dockerfile, some small things can help you to

Raspberry Pi

Connect to Raspberry Pi 3 in headless mode.

Imagine you have a Raspberry Pi and a lazy ass, or you just don’t have a monitor and keyboard to connect with your Raspberry Pi, but you still want to be able to work with it, or you just want to use it as all things embedded (like a

Golang

Gracefully shutdown Go API server connected to Database.

Go offers scalable and robust mechanism for creating API servers. As most of APIs talk to some database, on a scaled infrastructure receiving a lot of requests per second, it is important to shutdown gracefully in order to prevent goroutine leaks. This means closing two things in our case. HTTP

Golang

JWTs as Email Verification Tokens

Email verification is one of the basic things most websites use to make sure that the users that registers with them are real. The user is normally asked to click a link sent on his email. When the user clicks the link, the server recognises the user based on the