Reference link is down at "How to approach a system design interview question"

The reference link at: **Source(s) and further reading**

[How to ace a systems design interview](https://www.palantir.com/2011/10/how-to-rock-a-systems-design-interview/)

https://www.palantir.com/2011/10/how-to-rock-a-systems-design-interview/