PostgreSQLDatabases
DB Indexes: A Misconception Story
Why adding an index does not guarantee a faster query, and how PostgreSQL access patterns, selectivity, and execution plans changed my mental model.
Avnish Kumar
AI Software Engineer
Blog & Insights
Thoughts, tutorials, and insights on building scalable AI platforms, modern web architecture, and full-stack engineering.
AIRAG
Vector RAG vs Graph RAG: Building Memory for AI Agents
Understanding how Vector Databases and Graph Databases work together to create long-term memory systems for AI agents.
Avnish Kumar
AI Software Engineer
AILangGraph
LangGraph vs Agent SDKs in 2026: Is LangGraph Still Worth Learning?
A comparison between LangGraph and modern Agent SDKs for building AI applications in 2026, and when to choose each.
Avnish Kumar
AI Software Engineer
AILangGraph
Building Production-Ready AI Agents with LangGraph
A deep dive into transitioning from simple LLM scripts to robust, observable agentic systems using LangGraph and vector search.
Avnish Kumar
AI Software Engineer
AIGenAI
How ChatGPT Understands Your Questions
A beginner-friendly explanation of what actually happens inside ChatGPT when you ask it a question.
Avnish Kumar
AI Software Engineer