FastAPI and All the Things

FastAPI and All the Things, from FastAPI Conf

Quick tour on all the new things from FastAPI and friends, how things have changed, features you could have missed from recent releases, tips and tricks you didn't know you wanted to hear.

Transcript

1. and All the Things @tiangolo
2. Who am I? I created: Sebastián Ramírez tiangolo.com @tiangolo Building:
3. @tiangolo
4. • Open source • Web APIs • Python framework @tiangolo
5. The numbers
6. 104k+ ⭐ @tiangolo
7. FastAPI - 100k+ GitHub stars 🎉 @tiangolo
8. 19M+ downloads @tiangolo
9. 19M+ downloads DAILY @tiangolo
10. 19M+ downloads DAILY @tiangolo
11. 380M+ downloads a month @tiangolo
12. 380M+ > USA's population downloads a month @tiangolo
13. ⌚ 26K+ downloads since the start of the talk @tiangolo
14. Python Developers Survey @tiangolo
15. Stack Overflow Developer Survey 2021 2026 @tiangolo
16. FastAPI stonks @tiangolo
17. In production
18. Who uses FastAPI …and many more. @tiangolo
19. @tiangolo
20. Webb - Space Telescope Science Institute @tiangolo
21. OpenAI - ChatGPT Images @tiangolo
22. Simulate Galaxies @tiangolo
23. Accelerate particles at CERN - Large Hadron Collider @tiangolo
24. @tiangolo
26. Pydantic v2 Validation in Rust Models across FastAPI Faster JSON responses @tiangolo
27. Pydantic models for parameters Query() Header() Cookie() Form() @tiangolo
28. Combine parameter models ?limit=20&offset=0&tags=books&search=python @tiangolo
29. Optional parameter models @tiangolo
30. Faster JSON responses @tiangolo
31. Streaming responses Request [1, 2, 3] Full response Streamed 1 2 3 Time @tiangolo
32. Stream data - JSON Lines @tiangolo
33. Stream data - Server-Sent Events @tiangolo
34. Serve a frontend with app.frontend() @tiangolo
35. OpenTelemetry support fastapi[standard] In FastAPI Cloud it just works @tiangolo
36. OpenTelemetry - your provider Traces - Metrics - Logs FASTAPI_OTEL_AUTO_CONFIGURE=true OTEL_SERVICE_NAME=my-api OTEL_EXPORTER_OTLP_ENDPOINT=https://collector.example.com @tiangolo
38. SQLModel - modern foundations Pydantic v2 SQLAlchemy 2.1 Validation + database models @tiangolo
39. SQLModel - UTC by default @tiangolo
40. SQLModel - tested against real databases PostgreSQL MySQL MariaDB SQLite @tiangolo
42. Typer - no Click dependency Vendored Click Control over compatibility Fewer dependency conflicts @tiangolo
43. Agents
44. New APIs. Old suggestions. Older training data Your library version Maintainer knowledge @tiangolo
45. Agent skills from library maintainers @tiangolo
46. Agent skills for your library version Installed library Code vN Skills vN Linked skills Agent @tiangolo
47. Agent skills for your library version Installed library Code vN+1 Skills vN+1 Linked skills Agent @tiangolo
48. Add skills to your agent uvx library-skills Discover skills Link skills library-skills.io @tiangolo
49. Developer tools
50. Start with fastapi-new uvx fastapi-new my-app cd my-app Minimal FastAPI app uv project + lockfile main.py pyproject.toml uv.lock README.md @tiangolo
51. Configure the app in pyproject.toml pyproject.toml backend/main.py @tiangolo
52. FastAPI extension for VS Code / Cursor @tiangolo
53. From a test to its path operation @tiangolo
54. Develop locally. Run in production. Development uv run fastapi dev Reload on changes Production uv run fastapi run @tiangolo
55. Deploy with FastAPI Cloud uv run fastapi deploy https://myapp.fastapicloud.dev @tiangolo
56. Your API is online @tiangolo
58. Serve a frontend with app.frontend() @tiangolo
59. Frontend + API + CDN Cloudflare Static asset Browser Static assets Frontend From cache API One deployment @tiangolo
60. Frontend + API + CDN Cloudflare Static asset Browser Static assets Frontend Forwarded API From cache API request One deployment @tiangolo
61. Automatic scaling @tiangolo
62. Usage-based pricing fastapicloud.com/pricing @tiangolo
63. Integrations @tiangolo
64. Deploy on GitHub pushes @tiangolo
65. Set up CI uv run fastapi cloud setup-ci GitHub Actions @tiangolo
66. See what your application is doing @tiangolo
67. See what your application is doing @tiangolo
68. Cloud plugins for coding agents Codex ChatGPT Claude Code "Deploy this app" @tiangolo
69. General Availability Today fastapicloud.com
70. FastAPI Cloud - GA @tiangolo
71. From idea to a running application Create Agents fastapi-new library-skills Develop Deploy fastapi dev fastapi deploy @tiangolo
72. @tiangolo
73. Thank you! fastapi.tiangolo.com Sebastián Ramírez tiangolo.com @tiangolo