Overview For learning purpose, creating a kafka cluster with just one broker is usually enough. However, to simulate the real word, setting up a 3 nodes cluster is ideal. This post shows you how to quickly setup a 3 nodes cluster on your machine with kafka 3.9 Download Kafka You can download kafka 3.9 from … Read more
Overview The world of software development increasingly demands the ability to design and build large-scale distributed systems. Whether you’re preparing for a system design interview or aiming to architect robust applications, understanding the core concepts is paramount. This guide will take you through the essential building blocks of system design, drawing from a comprehensive tutorial … Read more
In this post, we’ll walk through the architecture and implementation of a simple microservices-based online store built with: Microservices Architecture Our online store is made up of the following services: Service Responsibility catalog-service Manages products (name, price) order-service Handles orders, triggers workflow events inventory-service Reserves stock when an order is placed payment-service Simulates payment processing … Read more
Goal: Build a small Java app with intentional performance problems, and use real-world tools to analyze and understand: Step 1: Set Up a Java App with a Memory Leak What’s a memory leak in Java? In Java, memory leaks occur when objects are unintentionally kept in memory because they’re still referenced, preventing the Garbage Collector … Read more
Mastering system design is about learning to balance complex trade-offs and make reasoned architectural decisions. As software architect Mark Richards famously said, “Everything in software architecture is a trade-off.” (The First Law of Software Architecture: Understanding Trade-offs – DEV Community) This multi-phase roadmap will guide a web developer (with mid-scale SaaS experience) through a deep … Read more
This is a quick guide to add new peer to your WireGuard VPN. First, generate the key pair This will create two files (private key and public key) at the same directory where you run the command. Still on the VPN server, run: Now, create a config file with this new info On your device … Read more