Grokking the System Design Interview
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Bandwidth estimation related

shripadtheneo

Oct 28, 2024

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Aug 24, 2025

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Purpose

Why is Estimation Important in System Design Interviews?

Estimation Techniques

  1. Rule of thumb
  1. Approximation
  1. Breakdown and aggregation
  1. Sanity check

Types of Estimations in System Design Interviews

Process

Practical Examples

  1. Load Estimation
  1. Storage Estimation
  1. Bandwidth Estimation
  1. Latency Estimation
  1. Resource Estimation

System Design Examples

  1. Designing a messaging service
  1. Designing a video streaming platform

Tips for Successful Estimation in Interviews

  1. Break down the problem
  1. Use reasonable assumptions
  1. Leverage your experience
  1. Be prepared to adjust your estimations
  1. Don’t Forget to Ask Clarifying Questions
  1. Communicate your thought process

Conclusion