Introduction: Why Conflicts Happen in Distributed Systems Imagine you and your friend are both editing the same shared to-do list. You add “Buy milk”. At the same time, your friend adds “Buy bread”. When the system tries to merge these updates, w...
Introduction: Why Ordering Events Matters Imagine you’re chatting with a friend on WhatsApp. You send “Hello” and then “How are you?”. But when your friend opens the chat, they see: How are you? Hello That feels weird, right? The order of messages m...
I tried implementing a mini in-memory key-value data store that supports transactions, rollback, and commit — just to see how databases handle these operations under the hood. Turns out, it’s a fascinating journey of layers, reversibility, and data i...
If you've been working with Python for a while, you've probably used Enums for simple constants. But did you know that Python Enums can carry custom data and behave like mini data classes? Let me show you a powerful pattern that will change how you t...
Introduction In distributed systems, maintaining data consistency across multiple services is challenging, especially in financial applications where transactions must be atomic and reliable. The SAGA pattern is a design pattern that helps manage dis...
A Step-by-Step Guide to Training Your Own AI Model 1. What is Fine-Tuning? Fine-tuning is like teaching a well-read scholar to specialize in a new field. Imagine someone who’s read thousands of books (the pretrained model) – we’re giving them a cras...
