FAQ
Built to teach patterns.
thedsengine helps you explore system design hands-on. The goal is intuition - how architectures behave when load, failures, or constraints change - not memorising exact figures from a run.
What is thedsengine?
A place to sketch systems, try different designs, and see how choices play out - caching, replication, queues, load balancing, and the usual tradeoffs.
Why focus on patterns instead of numbers?
Real latency and throughput depend on your stack, traffic, and ops context. What travels well is the pattern: when a cache helps, when retries hurt, when a queue buys time. The numbers here are for comparison, not for quoting in a capacity plan.
How should I read the metrics?
Use them to compare before and after, or one design against another. Look for what moved and why - not whether a line landed on a specific value.
What should I pay attention to during a problem?
Relationships and direction: load going up, errors appearing at a component, a fallback kicking in, a bottleneck shifting. Those shifts are the lesson.
Who is this for, and how does it fit with books or production?
Anyone building system design judgement - from first interviews to design reviews. Books and docs give vocabulary; this adds a place to wire things up and stress them. It complements production experience; it does not replace running real services.