The Reliability Whisperer

The Reliability Whisperer

The Scale Cube: A Practical Guide to Scalable System Design

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The Reliability Whisperer
Nov 03, 2025
∙ Paid

The Scale Cube, introduced in The Art of Scalability, provides a powerful three-dimensional model for thinking about how to scale systems effectively. Each axis — X, Y, and Z — represents a different strategy for improving scalability, resilience, and performance.

In technical interviews (especially system design rounds), understanding these axes helps c…

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