FastAPILLMStreamingSSEOpenAI
Adding streaming LLM responses with Server-Sent Events in FastAPI
How to implement real-time streaming chat responses using SSE in FastAPI, with token counting and proper error handling.
·FastAPI AI Kit Team
Blog
Technical writing on FastAPI, LLM integration, RAG pipelines, and building production backends.
FastAPIArchitecturePythonBackend
How we structure a production FastAPI project
A practical guide to the routers, services, and repository pattern that makes FastAPI codebases easy to maintain at scale.
·FastAPI AI Kit Team
ragfastapipgvectoropenaiproduction
Building a Production RAG Pipeline with FastAPI and pgvector
A complete walkthrough of building a retrieval-augmented generation pipeline: document ingestion, embedding, vector search, and LLM context injection — all in async FastAPI.
·FastAPI AI Kit Team
fastapiauthjwtapi-keyssecurityproduction
JWT Auth and API Key Management in FastAPI: A Production Guide
How to implement production-grade JWT authentication and API key issuance in FastAPI — with refresh tokens, per-key rate limiting, and secure storage.
·FastAPI AI Kit Team
fastapistripebillingmeteringsaasproduction
Usage-Based Billing with Stripe Metering in FastAPI
How to implement token-based usage metering with Stripe's metered billing in a FastAPI backend — from per-request tracking to webhook handling.
·FastAPI AI Kit Team
fastapideploymentrailwayrenderdockerproduction
Deploying FastAPI to Railway and Render: A Production Guide
Step-by-step production deployment of a FastAPI app with Postgres, Redis, and Celery workers on Railway and Render — including migration automation and health checks.
·FastAPI AI Kit Team
fastapiceleryredisbackground-jobsasyncproduction
Async Background Jobs with Celery and FastAPI
How to offload long-running LLM tasks to Celery workers in FastAPI — job queuing, status polling, result storage, and monitoring with Flower.
·FastAPI AI Kit Team
fastapisqlalchemyasyncpostgresormproduction
SQLAlchemy 2.0 Async with FastAPI: Best Practices
The right way to use SQLAlchemy 2.0 async sessions in FastAPI — dependency injection, transaction management, eager loading, and common pitfalls.
·FastAPI AI Kit Team