Posts

Introduction If you put anything on the internet—an API, a website, an admin portal—you need SSL/TLS. It’s what turns http into https, encrypts traffic, and lets users verify they’re talking to the right server. But “turn on TLS” hides a lot of complexity: ciphers, certificates, OCSP, mTLS, key rotation, HTTP/2, QUIC, and more. This in-depth, zero-to-hero guide demystifies SSL/TLS. You’ll learn the concepts, how the protocol works, how to issue and deploy certificates, how to configure popular servers securely, how to test and monitor, and how to avoid common pitfalls. By the end, you’ll be able to ship production-grade TLS with confidence. ...

Introduction Webhooks are the backbone of modern, event-driven integrations. Instead of continuously polling an API to ask “has anything changed yet?”, webhooks let services push events to your application as soon as they happen: a payment succeeds, a repository receives a push, a customer updates their profile, or a ticket is assigned. This in-depth tutorial will take you from zero to hero. You’ll learn: What webhooks are and how they compare to polling and WebSockets How to build robust webhook receivers in multiple languages Signature verification, replay protection, and other security best practices Idempotency and reliable processing with retries and dead-letter queues How to test locally using tunnels and inspector tools How to design and operate your own webhook provider at scale Links to the best official docs and tools in the ecosystem If you’re implementing webhooks for the first time or trying to harden your production setup, this guide will meet you where you are and help you ship with confidence. ...

More than 2,500 years after its composition, Sun Tzu’s “The Art of War” remains one of the most influential works on strategy ever written. This ancient Chinese military treatise offers timeless wisdom that extends far beyond the battlefield into business, leadership, and personal development. Let’s explore the profound insights from each of its thirteen chapters. Table of Contents Chapter 1: Laying Plans Chapter 2: Waging War Chapter 3: Attack by Stratagem Chapter 4: Tactical Dispositions Chapter 5: Energy Chapter 6: Weak Points and Strong Chapter 7: Maneuvering Chapter 8: Variation in Tactics Chapter 9: The Army on the March Chapter 10: Terrain Chapter 11: The Nine Situations Chapter 12: The Attack by Fire Chapter 13: The Use of Spies Final Chapter: 10 Concluding Ideas Chapter 1: Laying Plans The opening chapter establishes the fundamental importance of planning and assessment in any strategic endeavor. ...

Software testing is an essential component of the software development lifecycle that ensures quality, reliability, and user satisfaction. In this comprehensive guide, we’ll explore everything you need to know about software testing, from fundamental concepts to advanced techniques and best practices. Table of Contents What is Software Testing? Why Testing Matters Types of Software Testing Functional Testing Non-Functional Testing Structural Testing Testing Levels Testing Methodologies Popular Testing Tools and Frameworks Best Practices for Effective Testing Conclusion Resources What is Software Testing? Software testing is the process of evaluating and verifying that a software application or system meets specified requirements and functions correctly. It involves executing the software with the intent of finding defects, errors, or gaps that could affect its performance, security, or user experience. ...

Introduction Kubernetes has become the de facto standard for running containerized applications at scale. But the ecosystem can feel overwhelming: pods, deployments, services, ingress, operators, Helm, RBAC—the list goes on. This in-depth tutorial takes you from zero to hero with clear explanations, hands-on examples, and practical guidance. You’ll learn the mental model, set up a local cluster, deploy and expose applications, manage configuration and storage, scale reliably, secure your workloads, observe and debug issues, and ship to production using modern workflows. ...