---
title: "Ujjwal Agarwal (@ujjwalcode) | Hashnode"
description: "Full Stack Engineer | Backend Engineer | AI Engineer. Read the latest articles by Ujjwal Agarwal on Hashnode."
url: "https://hashnode.com/@ujjwalcode"
---

@ujjwalcode

# Ujjwal Agarwal

@ujjwalcode · Joined December 2021

Full Stack Engineer | Backend Engineer | AI Engineer

## Comments

[Exactly. The negation point is especially important without onions is the hard constraint, which is hard to guarantee with similarity alone. And yes, RAG isn't just giving the LLM more information. It's restricting the LLM's decision to things the system already knows how to handle.](https://hashnode.com/posts/ai-system-design-doordash-search-system/6a9e926c1e6787a4df21d7cb/comment/6a9f1353b0dfb7d1c6d1255c#reply-6aa65ec08f84c8cb369dcc06)

Reply · Article · Sep 13 · [AI System Design: DoorDash Search System](https://hashnode.com/posts/ai-system-design-doordash-search-system/6a9e926c1e6787a4df21d7cb)