Serverless RAG with AWS Lambda & Local LLMs

A highly scalable, secure, and privacy-focused Retrieval-Augmented Generation (RAG) pipeline leveraging AWS Serverless architecture, local embedding models, and large LLMs.

System Architecture

Serverless Document Ingestion

Designed for cost-efficiency and infinite scaling. The document ingestion pipeline is triggered by AWS S3 events and processed asynchronously using AWS Lambda functions, completely eliminating idle server costs.

  • S3 Triggers: Automatic processing upon document upload.
  • AWS Lambda: On-demand compute for text extraction and chunking.
  • LangChain Splitters: Advanced RecursiveCharacterTextSplitter for optimal semantic chunking.
S3 Document Upload (PDF/TXT)
AWS Lambda Trigger
LangChain Text Splitter

Privacy-First Local Embeddings

To ensure maximum data security and compliance, the pipeline utilizes local embedding models (e.g., nomic-embed-text) via self-hosted Ollama instances. Sensitive enterprise data never leaves your VPC during the vectorization process.

  • Zero external API calls for embeddings
  • Self-hosted Ollama instances within VPC
  • Cost-effective vector generation
Data Privacy Flow


100% In-VPC Processing

Semantic Search & Generation

Chunks are indexed in a high-performance Vector Database. When queries are made, semantic search retrieves the most relevant context, which is then fed into large self-hosted LLMs (like LLaMA 3.1) to generate highly accurate and context-aware responses.

  • Vector DB: Fast and scalable similarity search.
  • LLaMA 3.1: State-of-the-art open-source LLM generation.
  • FastAPI/Gradio UI: Seamless integration for developers and end-users.
Retrieval Latency
< 50ms
Response Accuracy
95%+

Core Technologies

AWS Lambda

Event-driven, serverless compute for cost-effective and highly scalable data ingestion pipelines.

LangChain Framework

Orchestrating the RAG logic, from document loading and recursive chunking to prompt templating.

Ollama & Local LLMs

Self-hosting models like LLaMA 3.1 and nomic-embed-text to guarantee privacy and reduce ongoing API costs.

FastAPI

High-performance backend framework exposing the RAG capabilities as robust RESTful APIs.

Project Demo

Watch how our Serverless RAG pipeline securely ingests documents and answers queries in real-time.

Serverless RAG Demo

AWS Lambda & LLaMA 3.1 Inference Demo

Build Your Own Private RAG System

We build secure, custom Retrieval-Augmented Generation architectures tailored to your enterprise data.

100% Data Privacy
Scalable Serverless Infrastructure
Custom Vector Database Setup
Consult with our Architects

Deploy Your Own Serverless RAG

Ready to leverage your enterprise data with absolute privacy and limitless scalability? Let's build your custom RAG solution.

Get Started