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 |