06- API Layer - Part 2 | CRUD & Sessions | Web Assistant

Production-Grade AI Agentic System — CRUD APIs, Rate Limiting & Middleware In this episode of the *Production-Grade AI Agentic System* series, we continue building the FastAPI API layer by implementing CRUD operations, user session management, rate limiting, chat session endpoints, and request context middleware. 📂 GitHub Repository https://github.com/Ad7amstein/product... 🚀 What You'll Learn Understand RESTful *CRUD operations* and when to use: `POST` for creating resources `GET` for reading resources `PATCH` for partial updates `PUT` for replacing an entire resource `DELETE` for deleting resources Work with the *User Sessions* database table and repository. Implement authentication endpoints for: `logout` `logout-all` `me` Add *rate limiting* to FastAPI endpoints using `slowapi`. Configure rate-limiting settings through environment variables and application settings. Create a centralized rate limiter for the API. Implement the *Chat Session API* with: Create chat session Update chat session Delete chat session Get a chat session Get all chat sessions Understand the concept of *middleware* in FastAPI. Learn how *context variables (`contextvars`)* can be used to maintain request-specific context. Implement and integrate `RequestContextMiddleware`. Test the request lifecycle through registration, login, and chat session API requests. Configure SQLAlchemy database debugging with the `DEBUG_DB` setting. --- ⏱️ Chapters 00:00 Introduction TODO --- 📚 Resources *Main Source:* https://medium.com/gitconnected/build... *Git Commands:* https://hushed-fear-573.notion.site/G... --- 🔖 Hashtags #AIAgents #AgenticAI #Python #FastAPI #BackendEngineering #SoftwareArchitecture #ProductionSystems #LLMs #APIDesign #RateLimiting #Middleware #RESTAPI