Overview

A production RAG system that indexes 100M+ documents from 20,000+ sources and makes them queryable through an LLM-powered research assistant, with sub-300ms p99 latency at web scale.

Challenge

The client needed 100M+ documents (academic papers, patents, regulatory filings, and news articles) consolidated into a single searchable knowledge base. Keyword search missed semantic connections between documents and couldn't handle the volume or velocity of new data arriving daily.

Solution

We built a multi-stage ingestion pipeline that normalizes, chunks, and embeds documents into a vector database. A hybrid retrieval system combines dense vector search with sparse keyword matching for high recall and precision. The LLM-powered research assistant synthesizes results into coherent answers with source citations, and the entire system is optimized for throughput with async processing, batched embeddings, and intelligent caching.

Results

100M+

Documents indexed

20K+

Sources integrated

<300ms

p99 query latency

99.9%

Uptime SLA

Tech Stack

PythonLangChainOpenAIPineconeElasticsearchRedisAWS LambdaS3SQSDocker