gautam
ARTICLES

Explore My Latest Insights

I regularly share insights, tutorials, and stories on web development, AI, UI/UX design, and tech trends. Explore some of my recent posts below.

JavaScript
TypeScript
LangChain
AI
React
Next.js
Python
OpenAI
Express js
Node.js
APIs
Prompt Engineering
Chatbots
LLMs
Frontend
Backend
Coding Tips
SaaS
User Authentication API with Express, JWT, Bcrypt, and MySQL.
JavaScriptExpressAuthenticationAPI

User Authentication API with Express, JWT, Bcrypt, and MySQL.

Build secure login systems using JWT, Bcrypt, and MySQL in Express apps.

Gautam Mahato

Gautam Mahato

Nov 4 2024

How to use express-validator as a middleware in Express App
JavaScriptExpressValidation

How to use express-validator as a middleware in Express App

Learn to validate user input effectively using express-validator middleware.

Gautam Mahato

Gautam Mahato

Nov 10 2024

Goodbye Exceptions! Mastering Error Handling in JavaScript with the Result Pattern
JavaScriptError Handling

Goodbye Exceptions! Mastering Error Handling in JavaScript with the Result Pattern

Use the Result Pattern for safer, cleaner, and more predictable error handling.

Gautam Mahato

Gautam Mahato

Nov 22 2024

Shallow Copy vs. Deep Copy in JavaScript
JavaScriptMemory

Shallow Copy vs. Deep Copy in JavaScript

Understand the key differences between shallow and deep copy techniques.

Gautam Mahato

Gautam Mahato

Nov 23 2024

Understanding Call Stack, Callback Queue, Event Loop, and Microtask Queue in JavaScript
JavaScriptEvent Loop

Understanding Call Stack, Callback Queue, Event Loop, and Microtask Queue in JavaScript

A comprehensive guide to how JavaScript manages tasks and async behavior.

Gautam Mahato

Gautam Mahato

Jan 11 2025

4 Effective Ways to Use the <script> Tag in HTML for Better Web Development
JavaScriptHTMLScript Tag

4 Effective Ways to Use the <script> Tag in HTML for Better Web Development

Master the usage of script tags to optimize JavaScript loading and execution.

Gautam Mahato

Gautam Mahato

Jan 21 2025

JavaScript Hoisting Explained in details: var, let, const, and Functions
JavaScriptHoisting

JavaScript Hoisting Explained in details: var, let, const, and Functions

Gain a deep understanding of how JavaScript hoists different declarations.

Gautam Mahato

Gautam Mahato

Jan 22 2025

How JavaScript Executes Code: A Step-by-Step Breakdown of Program Execution
JavaScriptExecution

How JavaScript Executes Code: A Step-by-Step Breakdown of Program Execution

Follow the lifecycle of JavaScript code execution from top to bottom.

Gautam Mahato

Gautam Mahato

Jan 26 2025

Understanding the DOM Tree: A Beginner's Guide to Understanding Web Page Structure
JavaScriptDOM

Understanding the DOM Tree: A Beginner's Guide to Understanding Web Page Structure

Learn how the browser represents and interacts with your HTML document.

Gautam Mahato

Gautam Mahato

Jan 27 2025

Caching Techniques Explained: How to Speed Up Data Retrieval Efficiently
PerformanceCaching

Caching Techniques Explained: How to Speed Up Data Retrieval Efficiently

Explore key caching strategies for faster and more efficient applications.

Gautam Mahato

Gautam Mahato

Mar 6 2025

Parallel Fan-Out Retrieval System using LangChain and Vector Databases
LangChainVectorDB

Parallel Fan-Out Retrieval System using LangChain and Vector Databases

Speed up and scale retrieval-augmented generation with a fan-out approach.

Gautam Mahato

Gautam Mahato

Apr 23 2025

Reciprocal Rank Fusion (RRF)
LangChainRankingSearch

Reciprocal Rank Fusion (RRF)

Improve ranking performance by combining multiple retrieval systems effectively.

Gautam Mahato

Gautam Mahato

Apr 23 2025

Step Back Prompting in RAG: How Thinking Bigger Leads to Smarter AI Answers
LangChainRAGPrompting

Step Back Prompting in RAG: How Thinking Bigger Leads to Smarter AI Answers

Enhance LLM reasoning by using high-level abstraction prompts.

Gautam Mahato

Gautam Mahato

Apr 23 2025

Understanding Chain of Thought (CoT) Prompting: Teaching AI to Think Step-by-Step
LangChainPrompt EngineeringAI

Understanding Chain of Thought (CoT) Prompting: Teaching AI to Think Step-by-Step

Leverage CoT prompting to improve logical reasoning in AI outputs.

Gautam Mahato

Gautam Mahato

Apr 23 2025

Learn the implementation of Hypothetical Document Embeddings (HyDE) in RAG application
LangChainRAGEmbeddings

Learn the implementation of Hypothetical Document Embeddings (HyDE) in RAG application

Use HyDE to simulate relevant documents and boost retrieval quality in RAG.

Gautam Mahato

Gautam Mahato

Apr 23 2025

Understanding Tokenization, Embeddings, and the Full LLM Pipeline (Beginner-Friendly Guide)
LLMTokenizationEmbeddings

Understanding Tokenization, Embeddings, and the Full LLM Pipeline (Beginner-Friendly Guide)

Large Language Models (LLMs) like ChatGPT may seem like magic, but they work through a very structured

Gautam Mahato

Gautam Mahato

Apr 09 2025