Understanding RAG: From First Principles
Learn how Retrieval-Augmented Generation solves the LLM context problem. Explore chunking, embeddings, vector databases, and semantic search from first principles.
April 25, 2026
3
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I follow through, no matter what.
Hi, I'm Mayank
ASoftwareEngineer
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Open to work
I build and ship reliable web applications, owning the entire execution from concept to production.
Building fast, Failing fast, Learning faster.
Projects
Leerio
AI-powered platform enabling conversational querying and summarisation of multi-page PDF documents using a Retrieval-Augmented Generation (RAG) pipeline.
Tech Stack
Next.jsTypeScriptTailwind CSSLangChainGrok APIMongoDBExpress.jsPinecone
Kestro
Platform to practice typing speed for code, not just text. Helps developers build muscle memory for syntax using a smooth editor powered by Monaco Editor.
Tech Stack
Next.jsTypeScriptTailwind CSSMonaco EditorCodeMirrorZustandPostgreSQLPrismaClerk
Hand and Brain Chess
An online platform for playing Hand and Brain Chess, allowing users to team up and enjoy this unique chess variant with real-time gameplay.
Tech Stack
ReactTypeScriptTailwind CSSSocket.ioNode.js
Blog
Making Tura: Building a Peer-to-Peer File Transfer CLI
Tura is a peer-to-peer file transfer CLI built with Rust. In this blog post, I will share my journey of creating Tura, the challenges I faced, and the lessons I learned along the way.
April 4, 2026
7
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URL as a Skill
Using the URL bar intentionally can make navigating the web faster and smarter. These are a few insights I picked up about URLs while building and using web apps.
March 16, 2026
5
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Skills
TypescriptNext.js
Node.js
React
PostgreSQL
Tailwind CSS
Express
Github
MongoDBDocker
GitHub Activity
Starz099’s coding journey over the past year
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