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Avnish Yadav

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Engineering Notes

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Field notes from systems I build: agents, n8n workflows, developer tools, micro-SaaS, and production architecture.

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Building Long-Term Memory: Setting Up Vector Databases for Semantic Search in LangChain

Avnish Yadav – February 22, 2026 · 8 MIN READ

Building Long-Term Memory: Setting Up Vector Databases for Semantic Search in LangChain

LLMs have a context limit; your data doesn't. Learn how to implement vector databases in LangChain to enable semantic search and build robust RAG pipelines.

LangChainBuilding Robust RAG Pipelines: A Deep Dive into LangChain Document Loaders

Avnish Yadav – February 22, 2026 · 8 MIN READ

Building Robust RAG Pipelines: A Deep Dive into LangChain Document Loaders

RAG systems live or die by the quality of their data ingestion. This guide covers how to architect a robust document loading pipeline using LangChain to handle PDFs, CSVs, and Web data effectively.