☕ Welcome to Siva’s Coffee Break bite-size engineering tutorials you can finish in one sitting.
Why I write these engineering tutorials
I learned the hard way. As a student, I jumped between dozens of sources just to understand one concept. Books, docs, forums, courses, I read them all. It worked. But it took too long.
This blog fixes that. I distill each topic into one clear, short post. You get the explanation I wish I had found first.
This blog exists to fix that. Every post here is the distilled version the explanation I wish I had found in one place when I was learning. Clear, short, and practical enough to try during a coffee break.
Learning is at the heart of every engineering tutorial here
The best engineers do three things. They learn new skills quickly. They drop what no longer works. They rebuild their understanding when needed. These posts support that habit.
Over 13 years of working across Fintech, ERP, and Shipping & Logistics, the one thing that never changed was the need to keep learning. Technologies shift, tools evolve, best practices get replaced. The engineers who stay relevant aren’t the ones who know the most they’re the ones who are comfortable learning something new, letting go of what no longer works, and building understanding from scratch when they have to.
Whether you are just starting out or have years of experience, there is always something new to learn in software engineering. These tutorials cover Terraform for infrastructure as code, GoLang for systems programming, Java for backend development, DevOps for automation and pipelines, and core engineering concepts like data structures and algorithms. Every post is written to be completed in a single coffee break no rabbit holes, no endless prerequisites.
- GoLang : Loops and conditions
Go uses a single for loop to handle every looping scenario. Learn how to use it as a basic loop, a while loop, an infinite loop, and a for range loop with practical code examples. - Groovy – Keywords
Groovy, being a Java-like language written for the Java platform, shares most of its keywords with Java. However, Groovy introduces a few additional keywords of its own. In this post, we’ll explore these new keywords that have been introduced in Groovy. There are 4 keywords in addition to what Java provides. They are: def def is Groovy’s way of declaring a variable, method, or method parameter without specifying an explicit type. Under the hood, it maps to java.lang.Object, but its real purpose is to signal that you’re opting into Groovy’s dynamic typing — letting the runtime figure out the type… Read more: Groovy – Keywords - GoLang – If else and switch Condition
Learn how to use the if, if-else, else-if, and switch statements in GoLang with practical examples. This guide covers Go’s unique features like init statements, boolean-only conditions, and idiomatic patterns such as guard clauses to help you write cleaner, more readable Go code. - Precursor to Cloud revolution: Datacenters
The cloud did not appear out of thin air. Before it existed, large enterprises had to build and manage their own data centers a process involving millions of dollars, 40–75 people, and over a year of work. This post explores the era that made the cloud not just possible, but inevitable. - Parallel, Concurrent and Asynchronous
Parallel, Concurrent, and Asynchronous are three of the most misused terms in engineering. This post breaks them down from first principles from single-core processors to cloud-scale architecture and shows you exactly when to apply each one in real systems. - Groovy: Hello World
If you’re coming from Java, you already know the drill — class declaration, public static void main, System.out.println… just to say “Hello.” Groovy throws all of that out the window. One line: println “Hello, World!” — and you’re done. Groovy is a JVM language built to cut through Java’s boilerplate, and in this post we’ll walk through exactly how it does that — from running your first script, to compiling it, to peeking inside the .class file Groovy generates for you under the hood. If Java is the full suit and tie, Groovy is your favourite hoodie that somehow still gets the job done.