Middleware & Cross Cutting
Per-IP Rate-Limiting Middleware
X-Process-Time Header Middleware
Request Logging Middleware
Error-Only Request Logging Middleware
Idempotency-Key Enforcement Middleware
Correlation ID Middleware
Background Tasks & Async Orchestration
User Signup With Background Email
Upload File With Background Processing
Async Accept With 202 Response
Concurrency-Limited Paginated API Fetch
Auth & Security
Reusable RBAC Dependency Factory
Bearer Token Extraction Dependency
HMAC Request Signature Verification
JWT Admin Scope Dependency
OAuth2 Password Flow With JWT
Restrictive CORS Configuration
Form-Based Login Endpoint
Request Validation & Models
Date Range Validator Model
Conditional Field Validation
User Registration Password Rules
Nested Order Validation Endpoint
Recursive Pydantic Tree Model
Sparse Fieldset Query Parameter
Streaming & Server Sent Events
Stream Large File Without Buffering
Stream Generated CSV In Chunks
SSE Progress Updates Endpoint
HTTP Range Video Streaming
Routing & Parameters
Paginated List With Query Params
Serve Static File By Path
Mount Versioned Sub-Application
Validate A Constrained Tags List
Header-Based API Versioning
Regex-Validated Query Parameter
Cursor-Based Pagination Endpoint
Accept Header Content Negotiation
Dynamic Status Code And Headers
Modular Routers With include_router
Enum-Constrained Path Parameter
Websockets
WebSocket Broadcast Connection Manager
Echo WebSocket With Graceful Disconnect
WebSocket Heartbeat With Pong Timeout
Llm & Ai Integration
ML Model Serving Predict Endpoint
Full Service Builds
ESG Data Ingestion Service
Privacy-Aware Visitor Analytics Backend
Multi-Worker URL Shortener
Dependency Injection
Injectable Settings Dependency
Refactor Global State to DI
Header Version Threshold Dependency
X-API-Key Auth Dependency
Class-Based Configurable Dependency
Chained Sub-Dependencies With Depends
File Upload & Download
Validated UploadFile Endpoint
Streaming Upload Size Guard
File Download Attachment Endpoint
Dependencies Testing & Response Handling
Global Custom Exception Handler
Lifespan-Managed Heavy Resource
Filter Sensitive Fields With response_model
Override DB Dependency in a Test
POST Integration Test Asserting 201
Simplify Validation Error Responses
Customize the OpenAPI Schema
Control Serialized Fields With response_model