Azure Functions Patterns Isolated Worker Model (.NET)
Modern .NET execution model with process isolation
Node.js v4 Programming Model
Modern code-centric approach for TypeScript/JavaScript
Python v2 Programming Model
Decorator-based approach for Python functions
Anti-Patterns ❌ Blocking Async Calls ❌ New HttpClient Per Request ❌ In-Process Model for New Projects ⚠️ Sharp Edges Issue Severity Solution Issue high ## Use async pattern with Durable Functions Issue high ## Use IHttpClientFactory (Recommended) Issue high ## Always use async/await Issue medium ## Configure maximum timeout (Consumption) Issue high ## Use isolated worker for new projects Issue medium ## Configure Application Insights properly Issue medium ## Check extension bundle (most common) Issue medium ## Add warmup trigger to initialize your code