Production-Grade RAG Document Management & API Security Middleware | FastAPI #14

In this fourteenth video of the Production-Grade Retrieval-Augmented Generation (RAG) series, we extend our RAG application with a complete Document Management API and production-ready API Security Middleware using FastAPI. 📌 *SOURCE CODE FOR VIDEO 14 PART 1 — DOCUMENT MANAGEMENT API:* https://github.com/AnjumZahid/product... 📌 *SOURCE CODE FOR VIDEO 14 PART 2 — API SECURITY MIDDLEWARE:* https://github.com/AnjumZahid/product... 📘 *STEP-BY-STEP TUTORIAL CODE:* https://github.com/AnjumZahid/product... 💻 *COMPLETE CODE FOR FINAL APPLICATION:* https://github.com/AnjumZahid/product... In Part 1, we implement a complete Document Management API that allows authenticated users to securely manage their uploaded documents. In this step, we implement: • Document listing and metadata retrieval APIs • Document pagination using offset and limit • Knowledge base filtering • Document metadata and processing status • Multi-tenant document isolation • User and organization ownership verification • Role-based document access permissions • Secure document deletion from MySQL and ChromaDB • Database row locking for concurrent deletion requests • Chunk reference cleanup and transaction handling • Asynchronous execution of blocking ChromaDB operations • Document management API testing • Swagger UI endpoint verification We also verify the complete document lifecycle, including uploading documents, retrieving document details, listing documents, deleting documents, and confirming that deleted documents can no longer be accessed. In Part 2, we implement centralized API Security Middleware to make our FastAPI application more secure, traceable, and production-ready. The API security architecture covered in this part: • Centralized API request and response security • CORS configuration for trusted frontend origins • Trusted host validation • Unique request ID generation and propagation • Request processing time measurement • Automatic HTTP security headers • Authentication response caching protection using Cache-Control: no-store • Structured request logging • Protection of passwords, JWT tokens, and sensitive request data from logs • Optional HTTPS redirect and HSTS support • Middleware configuration and application integration • Security middleware testing • Verification of request IDs, security headers, processing time, and CORS behavior After completing this step, our RAG application supports secure document lifecycle management and centralized API security controls. Users can manage documents according to their organization roles, while tenant isolation protects documents across users and organizations. The application also gains improved request traceability, security headers, structured logging, and a foundation for production deployment. 📚 *COMPLETE PRODUCTION-GRADE RAG SERIES:*    • Production-Grade Retrieval-Augmented Gener...   🎥 *YOUTUBE CHANNEL:*    / @anjumzahid789   💼 *LINKEDIN:*   / anjumzahid789   ◀ *PREVIOUS VIDEO:*    • Production-Grade Authorization System for ...   ▶ *NEXT VIDEO:* [Add next video link — API Rate Limiting] This series is explained in Urdu/Hindi and focuses on production-oriented RAG architecture, backend engineering, multi-tenancy, security, scalability, testing, and maintainable AI application development. #RetrievalAugmentedGeneration #RAG #FastAPI #Python #MySQL #ChromaDB #APISecurity #DocumentManagement #MultiTenantArchitecture #Middleware #BackendDevelopment #AIEngineering