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FastAPI

Real questions. Useful conversations. Find the people who know your stack.

FastAPI

Frameworks & web · #fastapi

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Community & Careers

Article0 replies655 followingPosted 22 Oct 2025, 01:08 UTC45.5K views4,312 votes

Choosing Between Pydantic Models and Plain Dict Request Bodies in FastAPI

Guide comparing Pydantic models vs. plain dict request bodies in FastAPI, with a decision table, trade‑offs, and a working example.

Community & Careers · Guide

pydantic request-validation

TB

Tasadduq Burneyowner

Started22 Oct 2025, 01:08 UTC

Level 33Owner26,525 rep points

Community & Careers

Article0 replies580 followingPosted 14 Apr 2026, 12:51 UTC146.4K views867 votes

Request‑Scoped Caching in FastAPI Dependency Injection: When and How to Use Sub‑Dependencies

Learn how FastAPI caches dependencies per request, shares sub‑dependency instances, and lets you swap them in tests without touching production data.

Community & Careers · Blog

sub-dependencies request-scoped

TB

Tasadduq Burneyowner

Started14 Apr 2026, 12:51 UTC

Level 33Owner26,525 rep points

Community & Careers

Article0 replies4,428 followingPosted 31 May 2026, 11:25 UTC25.1K views3,393 votes

FastAPI Lifespan vs on_event: A Practical Decision Guide

Compare FastAPI's lifespan context manager with legacy on_event hooks. Learn how to safely initialize DB pools and shared resources using app.state for better testability and ASGI compliance.

Community & Careers · Guide

fastapi lifespan

TB

Tasadduq Burneyowner

Started31 May 2026, 11:25 UTC

Level 33Owner26,525 rep points