System Design Interview Guide | System Design Trainer

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2026

Why You're Failing the Deep Dive Phase (And How to Fix It)

The deep dive phase is where senior engineers separate from mid-level. Learn the critical mistakes that cost you the offer and how to master this crucial interview phase.
Top 20 System Design Interview Questions for 2026

The most common system design interview questions asked at Google, Meta, Amazon, and other FAANG companies in 2026. Includes approach strategies and what interviewers are looking for.
How AI is Changing System Design Interview Prep

AI mock interviews are transforming how engineers prepare for system design interviews. Learn how AI-powered practice compares to traditional methods and why it's more effective.
System Design Mock Interview Cost: AI vs Human

Discover the dramatic cost difference between AI and human mock interviews - $3-12 vs $200 per session. Learn which approach fits your interview prep strategy.
Design a Rate Limiter: Complete System Design Guide

Master rate limiter design with this complete guide covering token bucket, sliding window algorithms, distributed systems, and real-world implementation strategies.
Design Twitter: Complete System Design Interview Walkthrough

Step-by-step guide to solving the Twitter system design interview question - covering timeline generation, fan-out strategies, and scaling to millions of users.
10 Most Common System Design Interview Mistakes

Learn the critical mistakes that cost engineers their dream offers - and how to avoid them.
Complete System Design Interview Preparation Guide 2026

Everything you need to know to prepare for and ace your system design interview at FAANG and top tech companies.
Design a URL Shortener: Complete Walkthrough

Step-by-step guide to solving one of the most popular system design interview questions.

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