A plain-English guide to High-Level Design (HLD): what belongs on the big-picture map, how it differs from LLD and requirements, common architecture styles, a worked food-delivery example, pitfalls to avoid, and a reusable template.
A plain-English guide to Low-Level Design: classes, relationships, SOLID principles, design patterns, UML, a worked parking-lot example, and how good LLD turns a big-picture plan into code a team can actually build.
A plain-English guide to the very first move in a system design interview: ask clarifying questions. Includes a five-phase framework, a worked URL shortener example, common mistakes to avoid, and how to practise before the real thing.
A plain-English guide to scoping in system design: what belongs inside the frame, what stays outside, and how the earliest decision on any project quietly shapes every technical choice that follows.
A plain-English guide to bottlenecks in system design: the six kinds, how to spot the warning signs, how architects hunt them down, and the proven strategies for fixing them without shifting the problem elsewhere.
A plain-English guide to asynchronous processing in system design: queues, pub/sub, event streams, retries, dead letter queues, idempotency, eventual consistency, and how the best teams decide what to wait for.
A plain-English tour of Domain-Driven Design: the ubiquitous language, bounded contexts, entities and value objects, aggregates, events, and how the discipline still shapes software teams today.
A calm, thorough guide to the single most important idea in Domain-Driven Design: the “trunk” analogy showing how the same word means different things in different rooms, what a bounded context really is (a modelling boundary from Eric Evans 2003 book paired with a ubiquitous language), why the “one giant…
A calm, thorough guide to why experienced architects lean on design patterns so heavily: the two-children-building-block-towers and bread-recipe analogies, the surprising origin of pattern thinking in Christopher Alexander 1977 building architecture book and the 1994 Gang of Four adoption, what a design pattern really is (a reusable shape of a…
A calm, thorough guide to redundancy in system design: the bicycle-with-two-brakes and circus-safety-net analogies, what redundancy really is (deliberate duplication of independent components), why it matters (true cost of downtime, failure as certainty not possibility, and the quiet value of predictability), how to find and eliminate single points of failure…