FastAPI: Hitting the Performance Jackpot
summary
FastAPI’s speed comes from three concrete ingredients: async I/O via uvicorn + uvloop (uvloop runs 2–4× faster and hits ~1,000 req/s for 1KB echoes), a thin, high‑performance foundation Starlette is ~20% faster than FastAPI in microbenchmarks, and Rust‑powered validation pydantic v2 (rewritten in Rust, ~5× faster than v1) driving request/response parsing and OpenAPI generation. Examples include echo‑server and framework comparisons showing Rust frameworks like Rocket remain faster, and the stack stays pluggable for different ORMs and DB connection strategies.
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chapters (7)
- 0:00Introduction to Fast API
- 3:59Asynchronous Web Servers
- 6:30Starlet and FastAPI
- 9:44Data Validation with Pydantic
- 16:25Pydantic Features and Use
- 20:08Flexibility and Architecture
- 22:14Q&A and Conclusion
