Daily deep dives into system design & modern architecture covering distributed systems, databases, caching, sharding, message queues, and more. Clear. Practical. FAANG-level insights.
| Platform |  | Pricing | Freemium | Publishes | Daily |
|---|---|---|---|---|---|
| Issues | 514 | Founded | 9 months ago | Last Issue | 3 days ago |
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designgurus.substack.comLatest Issues
How RAG Works: A System Design Interview Guide for Software Engineers
Learn how Retrieval-Augmented Generation (RAG) works step by step. Covers ingestion, chunking, embeddings, vector databases, and retrieval for beginners.
Large Language Models are impressive. They can write code, summarize reports, and ans...
The 12-Week System Design Interview Roadmap for Software Engineers
How to Teach Yourself System Design in Twelve Weeks Using Online Resources, in the Exact Order That Builds Understanding Rather Than Confusion
What This Blog Will Cover
L4 vs. L5 System Design Answers: What Interviewers Actually Hear
What L4 Engineers Say in System Design Interviews and What L5 Engineers Say Instead, Broken Into Ten Concrete Examples You Can Learn From
Most engineers preparing for a senior system design interview assume the gap between L4 and L5 is abo...
A Crash Course on APIs [2026 Edition]
Every API Concept a Software Engineer Should Understand, Explained From First Principles With the Depth That Separates Strong Candidates From Weak Ones
Most software engineers call APIs every day.
25 AI Terms Every Software Engineer Needs for System Design Interviews
AI is no longer just for data scientists. It is an engineering problem now.
System design interviews are changing.
Instead of just asking you to design a rate limiter or a news feed, interviewers are now highly likely to give you prompts...
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Founder DesignGurus.io | Author of 'Grokking' Courses on System Design
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