Prabhat Korshub Blogs

  If you’ve ever shipped code that worked on your laptop but exploded in production, welcome—this guide is your fast-track from confusion to confidence. We’ll start at zero, containerize an app with Docker, run it locally, then scale it on Kubernetes with modern DevOps practices like CI/CD, GitOps, and observability. You’ll get clear mental models, copy-paste-ready snippets, and a battle-tested workflow you can reuse at work. Why DevOps, Why Now DevOps is not a tool—it's a culture backed by automation. The goal: deliver value faster, safer, and more reliably. Docker standardizes “how we run,” Kubernetes standardizes “where we run,” and CI/CD glues everything together. The Dev + Ops Gap (and How to Bridge It) Developers want speed; Ops wants stability. Bridge the gap with versioned infrastructure, immutable images, automated testing, and continuous delivery. Outcome: repeatable releases, smaller blast radius, happier teams. CI/CD at a Glance Continuous Integrat...

 Kubernetes has become the industry standard for container orchestration , and with its rapid adoption, the demand for certified professionals has skyrocketed. If you’re aiming to showcase your expertise in building, deploying, and managing applications in Kubernetes, the Certified Kubernetes Application Developer (CKAD) certification in 2025 is the perfect milestone. This guide will help you understand what CKAD is, why it matters, and how to prepare effectively for the exam in 2025. What is CKAD? The Certified Kubernetes Application Developer (CKAD) is a certification offered by the Cloud Native Computing Foundation (CNCF) in collaboration with The Linux Foundation. It validates your ability to design, build, and run cloud-native applications on Kubernetes. Unlike theoretical certifications, CKAD is a hands-on, performance-based exam where you solve real-world Kubernetes tasks in a command-line environment. Why CKAD Matters in 2025 Kubernetes is at the heart of modern...

  Introduction to Amazon Style Microservices If you’ve ever wondered how Amazon manages millions of transactions, delivers personalized recommendations, and ensures near-perfect uptime, the answer lies in microservices . Instead of running on a single, massive application, Amazon’s platform relies on thousands of small, independent services working together seamlessly. Microservices are like tiny puzzle pieces. Each piece has its own job, but when combined, they create the bigger picture. Amazon’s approach stands out because of its scale, resilience, and customer-first design . Core Principles of Amazon Style Microservices Loose Coupling: Services are independent, so if one fails, it doesn’t break the entire system. Independent Scalability: Each service can be scaled separately based on demand. API-First Design: Communication happens through APIs, making integrations smoother. Decentralized Data Management: Each service owns its data, avoiding bottlenecks. Th...

  Introduction to DevOps What Is DevOps and Why It Matters DevOps is a fusion of “development” and “operations.” It’s more than a buzzword —it’s a culture shift that promotes collaboration between teams to deliver software faster and more reliably. With DevOps, the wall between coding and deployment comes down. Benefits of DevOps Culture Adopting DevOps leads to: Faster deployment cycles Improved collaboration Higher product quality Quicker bug fixes and updates In short, DevOps helps businesses move at the speed of innovation. The Role of Containers and Orchestration in DevOps Containers (like Docker) allow apps to run the same way across environments. Orchestration tools (like Kubernetes) help manage, scale, and deploy these containers efficiently. Getting Started with Docker What Is Docker? Docker is an open-source platform that lets developers package applications into containers—lightweight, standalone units that include everything needed to run the so...