Overview This tutorial only about openvpn client, not the server. I’ll show you how to connect to a VPN using openvpn3. What you need is a .opvn file and the username and password to login to the vpn server. Install OpenVPN3 on ubuntu There is an easy to follow guide here you follow to get … Read more
Overview Recently I moved from a Macbook Air to a windows machine and the thing I missed most was the git info in the terminal. Everything was so simple an sufficient with Oh My Zsh. After spent some time, I found the perfect theme (https://github.com/AntonRyadovoy/Powershell-nord-theme/blob/main/nordcustom_v.3.yaml with a little tweak). Setup I believe that you already … Read more
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