Easy Learn
What Is a VPN? A complete, beginner-friendly guide to Virtual Private Networks — what they are, how they actually work under the hood, how companies like Google, Amazon, Cloudflare, and NordVPN build and scale them, and how to use them securely in production systems. 01 · Introduction02 · Problem03 ·…
What is P99 Latency, and Why Do Architects Care About It? A complete, beginner-to-production guide to percentile latency — what it means, how it is measured, why the average is misleading, and how architects at companies like Amazon, Netflix, and Uber use it to keep systems fast and reliable. 01…
What Is Authorization? A deep, ground-up guide to how systems decide what you are allowed to do — from a single if statement in a small startup’s codebase, all the way up to the planet-scale policy engines running quietly inside Netflix, Google, Uber and AWS. 01 · Intro & History02…
What Does “Org-Wide Architectural Influence” Really Mean? A gentle, honest look at a phrase that shows up in performance reviews and job descriptions — and what it actually asks of you as a person, not just a title. 01 · Meaning02 · Why Now03 · A Tuesday04 · Excellence vs…
How Would You Handle Negotiating Your Compensation for an Architect Role? A calm, honest walk through one of the most quietly stressful conversations in a senior career — and how to have it without losing yourself in the process. Concrete preparation, sample language, and a steady mindset for a conversation…
What Is a Memory Leak, and Why Does It Threaten Reliability? A beginner-to-production guide to memory leaks — what they are, how they quietly build up inside running software, and why they are one of the sneakiest causes of crashes, slowdowns, and outages in real systems, from a single Android…
What Is Mean Time to Recovery? A ground-up explanation of MTTR: what it actually measures, how it’s calculated, why it’s one of the most important — and most misunderstood — reliability metrics in engineering, and how real companies use it to build systems that fail gracefully and recover fast. 01…
What is Mean Time Between Failures (MTBF)? A complete, beginner-to-production walk-through of understanding, calculating, and correctly using MTBF — one of the oldest, most widely quoted and most consistently misunderstood numbers in reliability engineering, from hard-drive datasheets and aircraft engines to modern cloud services and microservices. 01 · Intro &…
How Would You Handle a Situation Where a Deadline Pressures You to Cut Architectural Corners? A complete, beginner-friendly guide to one of the most common and most misunderstood questions in software architecture — what do you do when “ship it now” collides with “build it right”? We build the concept…
What Is Load Testing? Why we do it, how it works internally, and how the world’s biggest systems use it to survive Black Friday, World Cup finals, and viral moments — explained from first principles with analogies, diagrams, and real code. 01 · Introduction02 · Problem03 · Core Concepts04 ·…