API & Backend
FastAPI JWT & OAuth2 Security: Access Tokens, Refresh Token Rotation & RBAC
Implement enterprise security in FastAPI with short-lived JWT access tokens, Redis-backed refresh token rotation, and role-based access control.
Token Rotation Security Pattern
Access tokens should have a short lifespan (15 minutes). Refresh tokens (7 days) must be single-use: issuing a new access token invalidates the previous refresh token in Redis to prevent replay attacks.
Related Technical Guides
Deepen your understanding with these closely related production architectures and tutorials:
Real-Time AI Streaming with FastAPI and Google Gemini API (SSE)
Learn how to build low-latency Server-Sent Events (SSE) streaming endpoints in FastAPI using the official Google GenAI SDK and structured tool calling.
LLM Structured Outputs: Zero-Error JSON Extraction with Pydantic v2, JSON Schema & Instructor
Guarantee 100% schema compliance from LLMs using Pydantic v2, grammar-constrained decoding, and the Instructor library without retry overhead.
FastAPI Async Architecture: Asyncio Event Loop & High-Concurrency Best Practices
Master async def vs sync def in FastAPI, avoid blocking the asyncio event loop, and handle tens of thousands of concurrent requests smoothly.