"Hacking" the system design interview isn't about finding a secret document; it's about leveraging high-quality, community-driven resources like those found on GitHub and in structured PDFs. By mastering the core principles of distributed systems, following a structured design framework, and practicing common scenarios, you can confidently pass the system design interview in 2026.
A highly organized, curated list of resources specifically tailored to cracking FAANG-level interviews.
Preparing for a system design interview can be challenging for several reasons:
Scalability (Daily Active Users), Availability (99.99%), Latency (P99 < 200ms), and Data Retention. Phase 2: Back-of-the-Envelope Estimation (5 - 10 Minutes)
REST vs. GraphQL vs. gRPC; long polling vs. Server-Sent Events (SSE) vs. WebSockets. Common Real-World Interview Questions to Practice
This is the gold standard of open-source system design resources. It features comprehensive collections of flashcards, diagrams, and step-by-step walkthroughs for classic interview questions.
It prioritizes modern architecture patterns used by Big Tech (FAANG/MAMAA) companies.
While many search for the elusive "PDF" or a "GitHub" mirror to get a quick fix, truly hacking the interview requires more than just a downloaded file—it requires a mental framework that can handle any scale. Why This Book (and its GitHub Mirrors) Matter
, these repositories are highly recommended for system design prep:
Even with the best resources, candidates fail. Avoid these errors:
Even if you don’t have the original PDF, you can replicate 90% of its value using these free strategies:
To succeed, you must move beyond high-level buzzwords and understand how to apply these concepts in a 45-minute interview: Horizontal vs. Vertical Scaling.