Easy Learn
A beginner-friendly, deep-dive walkthrough of Content Delivery Networks and the role they play in modern infrastructure: what a CDN really is, a short history from Akamai in 1998 to the edge-computing era, the problem CDNs solve (distance, single-server limits, unpredictable middle mile), core concepts and vocabulary (origin, edge, PoP, cache…
A complete, beginner-friendly walkthrough of what “the cloud” actually is, how it works under the hood, why it took over modern computing, and how the engineers at Netflix, Amazon, and Uber use it every single day. Opens with the taxi-versus-car and public-utility-versus-backyard-generator analogies to explain that cloud computing means using…
A beginner-friendly, architect-focused deep dive into why cloud cost management moved out of the finance department and onto the design whiteboard. Opens with the rental-car analogy that motivates the whole shift, then traces the full history of how compute became a metered utility: the launch of AWS EC2 in 2006,…
A complete beginner-to-production guide to API gateway rate limiting: what it is, its history from 1980s telco traffic shaping to modern cloud gateways, the four core algorithms (fixed window, sliding window, token bucket, leaky bucket) with full Java reference implementations, the request lifecycle through gateway and Redis counter store, the…
A complete, beginner-friendly walkthrough of one of the most repeated questions in system design: why the world’s largest, busiest, most important computer systems almost always choose to grow sideways — adding more ordinary machines — rather than upward, by piling ever-more power onto one extraordinary machine. Opens with a neighbourhood…
A beginner-friendly, cross-disciplinary deep dive into why experienced software architects lean so heavily on design patterns. Opens with the “big blocks at the bottom” and shared-recipe analogies that motivate the whole idea, then traces the story of design patterns from Christopher Alexander’s 1977 book A Pattern Language on building architecture,…
A plain-language, beginner-to-architect walkthrough of why no software system can be optimized for everything at once — what optimization actually means, the three unavoidable reasons total optimization is impossible (shared limited resources, mathematical opposites, and the weight of every added feature), the four ingredients (time, space, money, simplicity) that almost…
A complete, beginner-friendly walkthrough of one of the most famous jokes in computer science — that there are only two truly hard problems: naming things, and cache invalidation. This guide is entirely about the second one, and treats it seriously rather than as a punchline. Opens with a whiteboard on…
A beginner-friendly, cross-domain deep dive into throughput – the honest measurement of how much genuine work a system produces over a real stretch of time. Opens with the car-wash and cafeteria-line analogies that motivate the whole idea, then traces throughput’s history from twentieth-century factory floors through mid-century telecommunications, into the…
A plain-language walkthrough of why software architects should stay hands-on with code — what “hands-on” actually means (proofs-of-concept, code review, occasional tickets, pair programming, incident response), how ivory-tower architecture quietly develops when architects stop coding, seven concrete reasons hands-on habits pay off (grounded decisions, credibility, sharper trade-offs, crisis usefulness, honest…