# System Design A sound understanding of storage scalability is really important if you intend to interview for a senior backend engineer or a senior infrastructure engineer role. We try to walk you through some of these problems here to set a tone around how to approach these problems. Do note that no design is correct or wrong. There are just good designs and bad designs which heavily depend on the use case. Hence, it is extremely important to clarify the requirements for the problem asked. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://blog.gomchik.com/tech/system-design.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.