--- title: "Ansh Sachan (@ansh421) | Hashnode" description: "Code Smarter not Harder. Read the latest articles by Ansh Sachan on Hashnode." url: "https://hashnode.com/@ansh421" --- @ansh421 # Ansh Sachan @ansh421 · India · Joined July 2025 Code Smarter not Harder [Website](https://ansh421.onrender.com/) ### [How AI read documents ?](https://mongodb-aggregation-pipelines.hashnode.dev/how-ai-read-documents?utm_source=hashnode&utm_medium=feed) Ever wonder how AI summarizes long docs without hitting token limits? Learn how RAG (Retrieval Augmented Generation) uses VectorDB to read your data. 2 min read · [mongodb-aggregation-pipelines.hashnode.dev](https://mongodb-aggregation-pipelines.hashnode.dev/how-ai-read-documents?utm_source=hashnode&utm_medium=feed) [Apr 21](https://hashnode.com/posts/how-ai-read-documents/69e7d984e43672781497d455) ### [How AI Works Behind The Scenes – A Simple Breakdown](https://mongodb-aggregation-pipelines.hashnode.dev/how-ai-works-behind-the-scenes-a-simple-breakdown?utm_source=hashnode&utm_medium=feed) Explore the behind-the-scenes workings of AI, including encoding, decoding, vectors, training, and how AI generates answers intelligently 5 min read · [mongodb-aggregation-pipelines.hashnode.dev](https://mongodb-aggregation-pipelines.hashnode.dev/how-ai-works-behind-the-scenes-a-simple-breakdown?utm_source=hashnode&utm_medium=feed) [Jan 23](https://hashnode.com/posts/how-ai-works-behind-the-scenes-a-simple-breakdown/6973c11dd92ea99b0da9efd0) ### [MongoDB aggregation pipelines](https://mongodb-aggregation-pipelines.hashnode.dev/mongodb-aggregation-pipelines?utm_source=hashnode&utm_medium=feed) Learn how to use MongoDB aggregation pipelines to process data with operators like $match, $group, and $sort for powerful data analysis 7 min read · [mongodb-aggregation-pipelines.hashnode.dev](https://mongodb-aggregation-pipelines.hashnode.dev/mongodb-aggregation-pipelines?utm_source=hashnode&utm_medium=feed) [Jul 10, 2025](https://hashnode.com/posts/mongodb-aggregation-pipelines/686fa0af59ca19eb15596c59)