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Software engineering guides

Deep reads on one subject at a time, free and without an account. Pick a topic below, or start with one of the beginner guides.

476 guides · 6 topics

Updated 3 Nov 2026 · Written by the SevyDevy team

In short

SevyDevy Learn has 476 free guides across 6 topics: System design, AI and GenAI, Backend, Frontend, DSA, Interview prep. A guide goes deep on one subject, such as RAG pipelines or rate limiting. It opens with a short answer, explains the reasons with diagrams and tables, and ends with interview questions you can practise.

Start here

New to a topic? Read one of these first.

System design

Real systems, from rate limiters and distributed systems to data infrastructure.

AI and GenAI

RAG, vector databases, LLM serving, MCP and how AI systems run in production.

Backend

Backend, databases, networking, caching and queues from first principles, plus incidents explained.

Frontend

React, Next.js, TypeScript and machine coding rounds.

DSA

The core patterns behind coding interview questions.

How to Use DSA’s 25 Core Patterns: A Visual Guide with Creative Diagrams and Detailed ExplanationsDSA · A detailed visual guide to the 25 core DSA patterns, covering how to identify them, when to use them, how they connect, and how to think like an interviewer using creative diagrams.20 min read · Updated 23 Apr 2026

Interview prep

How interviews work now and how to prepare for them.

Software engineering guides

In short

Start here

System Design for Beginners: A Visual Roadmap from Requirements to Real Systems

Backend Engineering from First Principles

Introduction to GenAI System Design: How AI Systems Actually Work in Production

How to Use DSA’s 25 Core Patterns: A Visual Guide with Creative Diagrams and Detailed Explanations