Building Dropbox: Architecting Distributed File Storage at Scale

This system design guide breaks down how to architect a distributed file storage platform like Dropbox, addressing critical trade-offs in the CAP theorem that all distributed systems engineers must understand. By examining functional requirements like cross-device synchronization alongside non-functional constraints around availability and scale, learners gain practical insight into why modern cloud services prioritize availability over strict consistency—a fundamental decision that separates scalable systems from brittle ones.