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
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
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
WebSocket Broadcast Connection Manager
Echo WebSocket With Graceful Disconnect
WebSocket Heartbeat With Pong Timeout
ML Model Serving Predict Endpoint
ESG Data Ingestion Service
Privacy-Aware Visitor Analytics Backend
Multi-Worker URL Shortener
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
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