Posts
I write about the topics I like whenver I feel like it. There are a total of 32.
Showing all 32 posts
Comparing Ballerina with Other Backend Languages
I built the same blogging API in 7 stacks, to see where Ballerina actually stands.
An Interactive Guide to AES
How AES scrambles a 16-byte block using the same shared key twice, and why 4 simple operations repeated 10 times are enough to make it unbreakable.
An Interactive Guide to DES
How the cipher that secured banking and government data for 20 years works, and why the same design that made it elegant also made it breakable.
An Interactive Guide to RSA
How public-key cryptography lets anyone encrypt a message that only you can decrypt, and the math behind why it is so hard to break.
An Interactive Guide to Diffie-Hellman Key Exchange
How two strangers agree on a secret over a fully public channel, and the math that makes it hard to break.
We Switched From ClickHouse to Postgres
A case study in choosing the wrong database for the right reasons, and what it took to fix it.
Hollow Platitudes
Popular quotes that sound profound but don't hold up under rational scrutiny.
How a Regex Becomes a Finite Automaton
An interactive walkthrough of the pipeline that turns a regular expression into a state machine.
Ragging
A simple breakdown of what legally counts as ragging in Sri Lankan universities.
It’s time to move away from Windows
Windows has been turned to shit. You should try the alternatives.
Fixing Pinch Zoom Issue On Pop OS
Pinch zoom on Pop OS doesn't work by default. Here is an easy fix.
Installing Vivado 2018.2 on Ubuntu
Here is how I installed Vivado on my Ubuntu machine
Don't use the most used software
I think the most used software are bloated. Its alternatives are better.
Better Alternatives in JavaScript ecosystem
I wanted to create a list of all shiny stuff in the javascript community.
Performance optimizations on kalvi.lk
Recently, I have worked on some performance issues on kalvi.lk website, and fixed them. Thought it might be useful to future me (or someone else) at some point.
One bug, one month of debugging
I wanted to share about a minor bug that took me 1 month to resolve. The reason for that was, my lack of knowledge regarding HTTP.
Bitwise Operations
Bitwise operations manipulate individual bits in binary data for efficient manipulation and testing. This article provides information and an interactive playground to help familiarize you with them.
Solving the Prerendering Preact Problem
Having trouble while prerendering a Preact site? In this post, I'll share my experience finding a solution to this common problem.
Static Open Graph images
I added statically-generated Open Graph images to my posts; and how I optimized them.
JavaScript Shorthands
Do you write JavaScript a lot? These shorthands might be helpful to you.
Divisibility Rules - An Explanation
How much time would you need to check if a given number is divisible by 2 –15 without a computer? Well, for the first few numbers, you would be so fast. But you will get stuck at 7 or 13 right? Don't worry. After reading this article, you won't. Give it a try.