Cloud Architecture

Introduction Kubernetes has become the de‑facto platform for running containerized workloads at scale. While many teams first focus on orchestrating pods, the real power—and complexity—lies in the networking layer that connects those pods, services, and external consumers. A well‑designed network is the backbone of a secure, resilient, and performant cloud infrastructure. In this article we will: Explain the core networking concepts that every Kubernetes practitioner must know. Explore the ecosystem of CNI plugins and how they affect latency, security, and scalability. Dive deep into Service types, Ingress, and Service Meshes, showing when to use each pattern. Show practical examples of NetworkPolicy, pod‑to‑pod isolation, and zero‑trust enforcement. Cover scaling strategies, observability, and troubleshooting techniques for large clusters. Present a real‑world case study that ties all concepts together. By the end of this guide you’ll have a concrete blueprint for building a secure, scalable Kubernetes networking architecture that can support anything from a modest dev cluster to a multi‑region production deployment. ...

In the era of social media and character limits, URL shorteners like Bitly and TinyURL have become essential infrastructure. While the core functionality—mapping a long URL to a short one—seems simple, building a system that can handle billions of requests with millisecond latency and 99.99% availability is a classic system design challenge. In this post, we will walk through the architectural blueprint of a scalable, resilient URL shortener. 1. Requirements and Goals Before diving into the architecture, we must define our constraints. ...

Introduction System design is the craft of turning ideas into resilient, scalable, and cost‑effective products. It spans protocols, storage engines, compute orchestration, observability, and more. This deep, zero‑to‑hero tutorial curates the top 50 technologies you should know—organized by category—with concise explanations, practical tips, code samples, and a learning path. Whether you’re preparing for interviews or architecting large‑scale systems, use this guide as your roadmap. Note: You don’t have to master everything at once. Build a foundation, then layer on technologies as your use cases demand. ...