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 |
