100,000 users daily, each sharing ~5 photos, roughly 5MB each in size) to get a sense of the traffic your system will need to handle. List the requirements you've defined (e.g. These requirements will drive your component decisions, so make sure you spend plenty of time here. What load will your system have to handle on a daily basis? What sort of data will be stored? How often will it be accessed? Changed?

Restate the prompt, then gather information. When it comes to system design, it would be best to make a bullet-point list of the design requirements. Let's get to it! Six Tips for Whiteboarding System Design Questions Photo by ThisisEngineering RAEng / Unsplash 1.) Clarify & Record Requirementsīecause system design questions are often vague, you'll need to begin by breaking up the problem into smaller, more manageable pieces. We'll use the question 'Design Instagram' as an example, and talk you through the steps. Ultimately, there are six main steps you need to follow to best whiteboard system design questions. If so, practice using that as you work through practice questions. Your target company may have a preferred platform ask your recruiter if you'll have your choice or be expected to use something specific. We encourage you to try a few to get a feel for the process. These days, due to COVID-19, most system design rounds are conducted virtually using an online whiteboarding tool like Zoom White Board, Miro, or Whimsical. In the past, whiteboarding sessions mostly happened during on-site interviews.

So what's the most effective way to use the whiteboard when answering system design interview questions? We wrote this article to guide you. They're practically made for whiteboarding, as enumerating requirements and outlining a high-level system diagram are critical first steps. System design questions, commonly asked of software engineers, engineering managers and technical program managers, are infamously ambiguous and complex. Armed with a whiteboard and marker (or a web app), candidates are free to illustrate their thoughts in an efficient way. Whiteboarding is common throughout tech interviews for many reasons, but mostly for its simplicity.

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