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RAG Tutorials & Pipelines Hybrid Retrieval Augmented Generation (RAG) Intermediate Apache-2.0 1.1k stars

Agentic RAG with LangGraph: AI Blog Search

AI Blog Search is an Agentic RAG application designed to enhance information retrieval from AI-related blog posts. This system leverages LangChain, LangGraph, and Google's Gemini model to fetch, process, and analyze blog content,...

At a Glance Specifications

Type Intermediate
Framework Streamlit
Primary Model Google Gemini 1.5 Pro
Language Python
License Apache-2.0
Stars 1.1k
Forks 143
Last Verified 2026-09-02

01 // What It Does

This blueprint illustrates how to construct a robust hybrid retrieval augmented generation (rag) utilizing Streamlit. It showcases clean separation between user input handling, LLM prompt formatting, external tool execution, and response synthesis.

02 // How It Works & Architecture

The architecture leverages Streamlit to manage conversation state while isolating API calls and tool definitions. This prevents context bloat and ensures predictable execution paths during multi-step reasoning cycles.

Execution Flow Diagram Pattern: Hybrid Retrieval Augmented Generation (RAG)
User Query / Document Input
Dense Vector Embedding (Qdrant/LanceDB)
Sparse Keyword Matching (BM25)
Reciprocal Rank Fusion (RRF) & Cross-Encoder Reranking
Augmented LLM Generation (Google Gemini 1.5 Pro) → Verified Answer
Architecture inferred from open-source project codebase and verified documentation.

03 // Real-World Use Cases

  • Building internal developer tools and automation agents for deep web research & synthesis.
  • Serving as an architectural reference for enterprise workflows requiring reliable tool calling.
  • Prototyping next-generation AI applications with minimal operational dependencies.

Technical Boundaries

Relies on upstream LLM API uptime and latency. Requires careful token budget management for long conversational contexts and sandboxing for untrusted external tool executions.

Production Considerations

For production deployment: introduce persistent session storage (e.g., Redis or PostgreSQL), implement strict rate limiting and request timeouts, add OpenTelemetry tracing for agent observability, and enforce granular RBAC for all executed tools.

Why This Project Matters

As AI systems evolve from passive text generators into active decision-making agents, understanding how to cleanly wire tool calling, retrieval, and state management in Streamlit is critical for engineering reliable software.

Quickstart Setup Guide

# 1. Clone the upstream repository
git clone https://github.com/Shubhamsaboo/awesome-llm-apps.git

# 2. Enter this blueprint directory
cd awesome-llm-apps/rag_tutorials/ai_blog_search

# 3. Create and activate a Python virtual environment
python3 -m venv venv
source venv/bin/activate  # Windows: venv\Scripts\activate

# 4. Install dependencies
pip install -r requirements.txt

# 5. Export required API keys in your environment
export OPENAI_API_KEY="your-api-key"

# 6. Execute application entrypoint