https://blog.vnykmshr.com/writing/tags/system-design/Recent content in System-Design on vnykmshrHugoenMon, 30 Jan 2023 00:00:00 +0000https://blog.vnykmshr.com/writing/system-design-interviews/Mon, 30 Jan 2023 00:00:00 +0000https://blog.vnykmshr.com/writing/system-design-interviews/<p>The prompt lands. A senior engineer, capable and prepared, starts drawing boxes. Load balancer, service tier, message broker, cache. Three minutes in, they are talking about shard counts.</p> <p>The design is not wrong. It is not a design either. It is a collection of patterns assembled against a problem that has not been defined.</p> <p>A system design prompt is deliberately loose. &ldquo;Design a notification system for ten million users&rdquo; has four different answers depending on what kind of notifications and which ones can be lost. &ldquo;Design a URL shortener&rdquo; has one shape at a thousand users and a different one at a billion. The looseness is the test. A person doing this work in production would not touch a whiteboard until the brief was tight enough to design against. The candidate who treats the interview as a different kind of activity from the work has missed what the interview is for.</p>