In modern software development, it's not uncommon to host your project on multiple Git platforms. You might have a primary repository on GitHub for public visibility and collaboration, and a mirror on GitLab for CI/CD pipelines or as a private backup...
Hello readers! 👋🏻 In my last article, I explored the basics of database normalization — the process of organizing data to reduce redundancy and improve integrity. But why is normalization needed in the first place? Today, I learned about data anoma...
EtherChannel – Basics Purpose: Aggregates multiple physical links into a single logical link for better bandwidth and redundancy. Modes: PAgP (Cisco proprietary): auto, desirable modes. LACP (IEEE standard): active, passive modes. Port-Channel...
Avoiding outages isn't an act of luck, but the result of deliberate, structured engineering that plans for the worst while delivering consistent performance in the best of times. These aren't just IT ideals—they're essential blueprints for sustainabl...
Introduction In modern cloud architectures, high availability and fault tolerance are essential to ensure continuous service delivery. In this post, I will walk you through creating a highly available architecture on AWS, focusing on the integration ...
We’ve all heard the phrase, “Everything happens for a reason.” But when you’re sitting across from your boss, listening as they explain that your time with the company has come to an end, those words rarely bring comfort. If you’ve ever been fired, y...
In Layer 2 Ethernet networks, resilience is key. Unlike Layer 3, where routing protocols dynamically reroute traffic, Layer 2 has limited options when it comes to path redundancy. Enter Link Aggregation (LAG)—a method that allows multiple physical li...
When London Heathrow Airport—one of the busiest airports in the world—grounded to a halt due to a power failure, it wasn’t just a minor inconvenience. It was a textbook example of why relying on a single point of failure (SPOF) is a recipe for disast...
When discussing system design, it is not uncommon to find multiple closely related terms that can be muddled up or conflated, one with the other. Two such terms are Replication and Redundancy. In good system design, it is important that a system is h...
Redundancy in networking is a cornerstone of resilience. From switch port bonds and RAID arrays to dual PSUs and backup links, these systems are designed to keep the lights on when things go wrong. However, the efficacy of redundancy depends not just...
