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back-of-the-envelope

back-of-the-envelope

#back-of-the-envelope
0 followers·2 articles

back-of-the-envelope

#back-of-the-envelope·0 followers·2 articles
back-of-the-envelope
Felipe Rodrigues
Felipe Rodrigues
blog.felipefr.dev·Jul 15, 2025
Jul 15, 2025

Back-of-the-Envelope Calculations for Interviews

The conference room was cold, as they always are. Across the table sat a candidate, let's call her Sarah. Sharp, articulate, and flew through the coding rounds. Now, we were in the system design session. I sketched a simple box on the whiteboard. "Le...

Discuss·7 reads
System Design
back-of-the-envelope
Felipe Rodrigues
Felipe Rodrigues
blog.felipefr.dev·Jun 30, 2025
Jun 30, 2025

Estimating Scale in System Design Interviews

The Art of Estimation: Navigating Scale in System Design Interviews Hook Introduction Imagine you're designing the next generation of Uber's ride-hailing system. The interviewer leans forward and asks, "How many servers do you need to handle 100 mill...

Discuss·5 reads
System Design
back-of-the-envelope

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New steps component and improved accessibility on Hashnode's blog and docs product.

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