---
title: "Durga Prasad (@dpgaharwal) | Hashnode"
description: "Software Engineer. Read the latest articles by Durga Prasad on Hashnode."
url: "https://hashnode.com/@dpgaharwal"
---

@dpgaharwal

# Durga Prasad

@dpgaharwal · Joined February 2026

Software Engineer

### [The Problem With RAG Nobody Is Talking About](https://dpgaharwal.hashnode.dev/the-problem-with-rag-nobody-is-talking-about?utm_source=hashnode&utm_medium=feed)

And how a tree, an LLM, and zero vectors fixed it.

12 min read · [dpgaharwal.hashnode.dev](https://dpgaharwal.hashnode.dev/the-problem-with-rag-nobody-is-talking-about?utm_source=hashnode&utm_medium=feed)

[Jun 2](https://hashnode.com/posts/the-problem-with-rag-nobody-is-talking-about/6a1e4e565f6fd90ddd98567d)

### [LLM Engineering 101: From System Prompts to Reasoning Agents](https://dpgaharwal.hashnode.dev/llm-engineering-101-from-system-prompts-to-reasoning-agents?utm_source=hashnode&utm_medium=feed)

From stateless API calls to multi-agent reasoning systems Imagine you just hired the smartest employee in the world. They can write code, explain quantum physics, debug production issues, and cook a

22 min read · [dpgaharwal.hashnode.dev](https://dpgaharwal.hashnode.dev/llm-engineering-101-from-system-prompts-to-reasoning-agents?utm_source=hashnode&utm_medium=feed)

[May 16](https://hashnode.com/posts/llm-engineering-101-from-system-prompts-to-reasoning-agents/6a081a0b5adec46063412a3d)

### [The AI Detective Agency](https://dpgaharwal.hashnode.dev/the-ai-detective-agency?utm_source=hashnode&utm_medium=feed)

Generative AI explained through a detective story how prompts become tokens, embeddings, attention, and predictions to generate smart responses.

6 min read · [dpgaharwal.hashnode.dev](https://dpgaharwal.hashnode.dev/the-ai-detective-agency?utm_source=hashnode&utm_medium=feed)

[Feb 19](https://hashnode.com/posts/the-ai-detective-agency/69975476587b14d25b60f982)