--- title: "#piyushgarag articles | Hashnode" description: "Explore 928 articles tagged #piyushgarag on Hashnode. Tutorials, guides, and how-tos from the community." url: "https://hashnode.com/tag/piyushgarag" --- Tag # #piyushgarag 928 posts · 3 followers [Sameer Selokar](https://hashnode.com/@sameers9823) · [Sep 4](https://hashnode.com/posts/beyond-vector-databases-understanding-vectorless-rag-pageindex-and-wiki-based-ai-memory/6a9a5aa125f7ba6eba8b6413) ### [Beyond Vector Databases: Understanding Vectorless RAG, PageIndex, and Wiki-Based AI Memory](https://blogbysameer.hashnode.dev/beyond-vector-databases-understanding-vectorless-rag-pageindex-and-wiki-based-ai-memory?utm_source=hashnode&utm_medium=feed) Explore Vectorless RAG, PageIndex, AI Wiki memory, and hybrid retrieval. Learn how structure-aware retrieval compares with Vector RAG. 16 min read · [blogbysameer.hashnode.dev](https://blogbysameer.hashnode.dev/beyond-vector-databases-understanding-vectorless-rag-pageindex-and-wiki-based-ai-memory?utm_source=hashnode&utm_medium=feed) [1](https://hashnode.com/posts/beyond-vector-databases-understanding-vectorless-rag-pageindex-and-wiki-based-ai-memory/6a9a5aa125f7ba6eba8b6413) [Sameer Selokar](https://hashnode.com/@sameers9823) · [Aug 24](https://hashnode.com/posts/model-context-protocol-mcp-how-ai-agents-connect-to-the-real-world/6a8c937e364bae6a2286993e) ### [Model Context Protocol (MCP): How AI Agents Connect to the Real World](https://blogbysameer.hashnode.dev/model-context-protocol-mcp-how-ai-agents-connect-to-the-real-world?utm_source=hashnode&utm_medium=feed) Learn how MCP connects AI agents with tools, APIs, databases, and devices through a standardized protocol for building powerful agentic systems. 12 min read · [blogbysameer.hashnode.dev](https://blogbysameer.hashnode.dev/model-context-protocol-mcp-how-ai-agents-connect-to-the-real-world?utm_source=hashnode&utm_medium=feed) [Pritam Subham Pani](https://hashnode.com/@pritamsubham) · [Aug 19](https://hashnode.com/posts/cors-explained-why-it-works-in-postman-but-fails-in-the-browser/6a855068c7700e3c6bbe58b9) ### [CORS Explained: Why It Works in Postman but Fails in the Browser](https://pritampani.hashnode.dev/cors-explained-why-it-works-in-postman-but-fails-in-the-browser?utm_source=hashnode&utm_medium=feed) CORS is a mechanism that allows a server to tell the browser which other origins are allowed to access its resources. 9 min read · [pritampani.hashnode.dev](https://pritampani.hashnode.dev/cors-explained-why-it-works-in-postman-but-fails-in-the-browser?utm_source=hashnode&utm_medium=feed) [shouvik sarkar](https://hashnode.com/@shouvik112) · [Aug 5](https://hashnode.com/posts/jwt-authentication-explained/6a730811de19e50665d7f3b9) ### [JWT Authentication Explained](https://sarkarshouvik.hashnode.dev/jwt-authentication-explained?utm_source=hashnode&utm_medium=feed) How JWT authentication, taken creation behind the scenes all in one article. 12 min read · [sarkarshouvik.hashnode.dev](https://sarkarshouvik.hashnode.dev/jwt-authentication-explained?utm_source=hashnode&utm_medium=feed) [Ahtsham Ul Haq](https://hashnode.com/@shani014) · [Aug 4](https://hashnode.com/posts/how-llms-work-explained-for-beginners/6a71b4fe0edc77791992fded) ### [How LLMs Actually Work: From Tokens to Transformers](https://shani-dev.hashnode.dev/how-llms-work-explained-for-beginners?utm_source=hashnode&utm_medium=feed) What really happens when you hit send on ChatGPT? A beginner-friendly guide to LLMs, tokens, transformers, context windows, and temperature. 14 min read · [shani-dev.hashnode.dev](https://shani-dev.hashnode.dev/how-llms-work-explained-for-beginners?utm_source=hashnode&utm_medium=feed) [faisal Siddiqui](https://hashnode.com/@faisalsiddiqui) · [Jul 28](https://hashnode.com/posts/how-node-js-handles-multiple-requests-with-a-single-thread/6a688d2bc984c8e493ac85e7) ### [How Node.js Handles Multiple Requests with a Single Thread](https://faisalsiddiqui.hashnode.dev/how-node-js-handles-multiple-requests-with-a-single-thread?utm_source=hashnode&utm_medium=feed) 1\. Single-Threaded Nature of Node.js Node.js is single-threaded, which means it uses a single main thread to execute JavaScript code. Instead of creating a new thread for every request, Node.js handle 4 min read · [faisalsiddiqui.hashnode.dev](https://faisalsiddiqui.hashnode.dev/how-node-js-handles-multiple-requests-with-a-single-thread?utm_source=hashnode&utm_medium=feed) [faisal Siddiqui](https://hashnode.com/@faisalsiddiqui) · [Jul 28](https://hashnode.com/posts/synchronous-vs-asynchronous-javascript/6a6898b1c46f786c89d3c239) ### [Synchronous vs Asynchronous JavaScript](https://faisalsiddiqui.hashnode.dev/synchronous-vs-asynchronous-javascript?utm_source=hashnode&utm_medium=feed) 1\. What synchronous code means Synchronous code means code that runs one task at a time, in order. The next line of code waits until the previous line is finished before running. Simple example: conso 4 min read · [faisalsiddiqui.hashnode.dev](https://faisalsiddiqui.hashnode.dev/synchronous-vs-asynchronous-javascript?utm_source=hashnode&utm_medium=feed) [faisal Siddiqui](https://hashnode.com/@faisalsiddiqui) · [Jul 28](https://hashnode.com/posts/understanding-variables-and-data-types-in-javascript/6a6892aac771ce3579df14b1) ### [Understanding Variables and Data Types in JavaScript](https://faisalsiddiqui.hashnode.dev/understanding-variables-and-data-types-in-javascript?utm_source=hashnode&utm_medium=feed) 1\. What Are Variables and Why Are They Needed? In JavaScript, a variable is like a box that stores information. Just as you can put something inside a box and give the box a label, you can store data 5 min read · [faisalsiddiqui.hashnode.dev](https://faisalsiddiqui.hashnode.dev/understanding-variables-and-data-types-in-javascript?utm_source=hashnode&utm_medium=feed) [Mangesh Jadhav](https://hashnode.com/@codewithmangesh) · [Jul 24](https://hashnode.com/posts/function-declaration-vs-function-expression-what-s-the-difference/6a636bb7e11395e08bdf63a9) ### [Function Declaration vs Function Expression: What’s the Difference?](https://blogwithmangesh.hashnode.dev/function-declaration-vs-function-expression-what-s-the-difference?utm_source=hashnode&utm_medium=feed) So I've been going through the Web Dev Cohort for a few weeks now, and functions are basically everywhere. Every single lecture uses them, every assignment needs them, and honestly I thought I underst 10 min read · [blogwithmangesh.hashnode.dev](https://blogwithmangesh.hashnode.dev/function-declaration-vs-function-expression-what-s-the-difference?utm_source=hashnode&utm_medium=feed) [Aditya](https://hashnode.com/@aaditya-dev) · [Jul 17](https://hashnode.com/posts/where-rag-fails-understand-the-limitations-of-llms/6a5a84a67b62eb69ed28d37d) ### [Where RAG Fails: Understand the Limitations of LLMs](https://generative-aii.hashnode.dev/where-rag-fails-understand-the-limitations-of-llms?utm_source=hashnode&utm_medium=feed) Where RAG fails, and how can we improve it 28 min read · [generative-aii.hashnode.dev](https://generative-aii.hashnode.dev/where-rag-fails-understand-the-limitations-of-llms?utm_source=hashnode&utm_medium=feed)