FastAPI Cheatsheets on Manvendra Rajpoot https://blog.rajpoot.dev/cheatsheets/fastapi/ Recent content in FastAPI Cheatsheets on Manvendra Rajpoot Manvendra Rajpoot https://blog.rajpoot.dev/img/personal/cover.png https://blog.rajpoot.dev/img/personal/cover.png Hugo en Manvendra Rajpoot FastAPI Cheatsheet 01 — Routing, Path Operations, and Routers https://blog.rajpoot.dev/cheatsheets/fastapi/01-routing-cheatsheet/ Mon, 11 May 2026 06:00:00 +0530 https://blog.rajpoot.dev/cheatsheets/fastapi/01-routing-cheatsheet/ FastAPI routing cheatsheet — path operations, parameter sources, routers, prefixes, mounts, and the request lifecycle in one scannable page. FastAPI Cheatsheet 02 — Pydantic Request Validation https://blog.rajpoot.dev/cheatsheets/fastapi/02-pydantic-validation-cheatsheet/ Mon, 11 May 2026 06:10:00 +0530 https://blog.rajpoot.dev/cheatsheets/fastapi/02-pydantic-validation-cheatsheet/ FastAPI request validation cheatsheet — Pydantic v2 models, validators, error handling, recipes. FastAPI Cheatsheet 03 — Response Models, Serialization, and Status Codes https://blog.rajpoot.dev/cheatsheets/fastapi/03-response-models-cheatsheet/ Mon, 11 May 2026 06:20:00 +0530 https://blog.rajpoot.dev/cheatsheets/fastapi/03-response-models-cheatsheet/ FastAPI response cheatsheet — response_model, exclude, status codes, response classes, headers. FastAPI Cheatsheet 04 — Dependency Injection https://blog.rajpoot.dev/cheatsheets/fastapi/04-dependency-injection-cheatsheet/ Mon, 11 May 2026 06:30:00 +0530 https://blog.rajpoot.dev/cheatsheets/fastapi/04-dependency-injection-cheatsheet/ FastAPI DI cheatsheet — Depends, sub-deps, scopes, overrides, lifespan, security deps. FastAPI Cheatsheet 05 — Authentication and Authorization https://blog.rajpoot.dev/cheatsheets/fastapi/05-auth-cheatsheet/ Mon, 11 May 2026 06:40:00 +0530 https://blog.rajpoot.dev/cheatsheets/fastapi/05-auth-cheatsheet/ FastAPI auth cheatsheet — password hashing, JWT, OAuth2 / OIDC, sessions, API keys, scopes, RBAC. FastAPI Cheatsheet 06 — Async, Concurrency, and the Threadpool https://blog.rajpoot.dev/cheatsheets/fastapi/06-async-concurrency-cheatsheet/ Mon, 11 May 2026 06:50:00 +0530 https://blog.rajpoot.dev/cheatsheets/fastapi/06-async-concurrency-cheatsheet/ FastAPI async / concurrency cheatsheet — async vs def handlers, threadpool, AnyIO, TaskGroup, blocking traps. FastAPI Cheatsheet 07 — WebSockets and SSE https://blog.rajpoot.dev/cheatsheets/fastapi/07-websockets-sse-cheatsheet/ Mon, 11 May 2026 07:00:00 +0530 https://blog.rajpoot.dev/cheatsheets/fastapi/07-websockets-sse-cheatsheet/ FastAPI WebSocket + SSE cheatsheet — handlers, auth, fanout, disconnect, multi-process. FastAPI Cheatsheet 08 — Background Tasks and Job Queues https://blog.rajpoot.dev/cheatsheets/fastapi/08-background-tasks-cheatsheet/ Mon, 11 May 2026 07:10:00 +0530 https://blog.rajpoot.dev/cheatsheets/fastapi/08-background-tasks-cheatsheet/ FastAPI background work cheatsheet — BackgroundTasks, ARQ, Celery, Dramatiq integration. FastAPI Cheatsheet 09 — Testing with Pytest, AsyncClient, and testcontainers https://blog.rajpoot.dev/cheatsheets/fastapi/09-testing-cheatsheet/ Mon, 11 May 2026 07:20:00 +0530 https://blog.rajpoot.dev/cheatsheets/fastapi/09-testing-cheatsheet/ FastAPI testing cheatsheet — TestClient, AsyncClient, dependency overrides, real DB tests, factories, CI. FastAPI Cheatsheet 10 — Observability: structlog, OTEL, Prometheus https://blog.rajpoot.dev/cheatsheets/fastapi/10-observability-cheatsheet/ Mon, 11 May 2026 07:30:00 +0530 https://blog.rajpoot.dev/cheatsheets/fastapi/10-observability-cheatsheet/ FastAPI observability cheatsheet — structlog, OpenTelemetry tracing, Prometheus metrics, correlation. FastAPI Cheatsheet 11 — Docker, Kubernetes, and Deploy https://blog.rajpoot.dev/cheatsheets/fastapi/11-deployment-cheatsheet/ Mon, 11 May 2026 07:40:00 +0530 https://blog.rajpoot.dev/cheatsheets/fastapi/11-deployment-cheatsheet/ FastAPI deploy cheatsheet — Dockerfile, Uvicorn, Kubernetes manifest, graceful shutdown, autoscaling. FastAPI Cheatsheet 12 — Middleware Patterns https://blog.rajpoot.dev/cheatsheets/fastapi/12-middleware-cheatsheet/ Mon, 11 May 2026 07:50:00 +0530 https://blog.rajpoot.dev/cheatsheets/fastapi/12-middleware-cheatsheet/ FastAPI middleware cheatsheet — common patterns, ordering, ASGI middleware, custom logic. FastAPI Cheatsheet 13 — OpenAPI, Swagger UI, and Schema Tweaks https://blog.rajpoot.dev/cheatsheets/fastapi/13-openapi-tweaks-cheatsheet/ Mon, 11 May 2026 08:00:00 +0530 https://blog.rajpoot.dev/cheatsheets/fastapi/13-openapi-tweaks-cheatsheet/ FastAPI OpenAPI cheatsheet — schema customization, Swagger UI tweaks, ReDoc, custom docs paths. FastAPI Cheatsheet 14 — Settings, Config, and Environments https://blog.rajpoot.dev/cheatsheets/fastapi/14-settings-config-cheatsheet/ Mon, 11 May 2026 08:10:00 +0530 https://blog.rajpoot.dev/cheatsheets/fastapi/14-settings-config-cheatsheet/ FastAPI config cheatsheet — pydantic-settings, env files, secrets, multi-environment patterns. FastAPI Cheatsheet 15 — Common Errors and How to Fix Them https://blog.rajpoot.dev/cheatsheets/fastapi/15-common-errors-cheatsheet/ Mon, 11 May 2026 08:20:00 +0530 https://blog.rajpoot.dev/cheatsheets/fastapi/15-common-errors-cheatsheet/ FastAPI common-errors cheatsheet — the recurring failures and quick fixes. FastAPI Cheatsheet 16 — Pagination Patterns https://blog.rajpoot.dev/cheatsheets/fastapi/16-pagination-patterns-cheatsheet/ Mon, 11 May 2026 08:30:00 +0530 https://blog.rajpoot.dev/cheatsheets/fastapi/16-pagination-patterns-cheatsheet/ FastAPI pagination cheatsheet — offset, cursor, keyset, opaque cursors, generic Page model. FastAPI Cheatsheet 17 — Caching: HTTP, Redis, fastapi-cache https://blog.rajpoot.dev/cheatsheets/fastapi/17-caching-patterns-cheatsheet/ Mon, 11 May 2026 08:40:00 +0530 https://blog.rajpoot.dev/cheatsheets/fastapi/17-caching-patterns-cheatsheet/ FastAPI caching cheatsheet — HTTP cache headers, Redis-backed caching, fastapi-cache library. FastAPI Cheatsheet 18 — Streaming and LLM Integration https://blog.rajpoot.dev/cheatsheets/fastapi/18-streaming-llm-cheatsheet/ Mon, 11 May 2026 08:50:00 +0530 https://blog.rajpoot.dev/cheatsheets/fastapi/18-streaming-llm-cheatsheet/ FastAPI LLM streaming cheatsheet — Anthropic / OpenAI / vLLM streaming, tool calls, cancellation. FastAPI Cheatsheet 19 — Health, Probes, and Lifespan https://blog.rajpoot.dev/cheatsheets/fastapi/19-health-probes-cheatsheet/ Mon, 11 May 2026 09:00:00 +0530 https://blog.rajpoot.dev/cheatsheets/fastapi/19-health-probes-cheatsheet/ FastAPI health / readiness / probes cheatsheet — lifespan, dependency check endpoints, K8s integration. FastAPI Cheatsheet 20 — Production Checklist https://blog.rajpoot.dev/cheatsheets/fastapi/20-production-checklist-cheatsheet/ Mon, 11 May 2026 07:50:00 +0530 https://blog.rajpoot.dev/cheatsheets/fastapi/20-production-checklist-cheatsheet/ FastAPI production checklist — every box to tick before going live.