Azure Functions

1---
2name: azure-functions
3description: "Expert patterns for Azure Functions development including isolated worker model, Durable Functions orchestration, cold start optimization, and production patterns. Covers .NET, Python, and Node.js programming models. Use when: azure function, azure functions, durable functions, azure serverless, function app."
4source: vibeship-spawner-skills (Apache 2.0)
5---
6 
7# Azure Functions
8 
9## Patterns
10 
11### Isolated Worker Model (.NET)
12 
13Modern .NET execution model with process isolation
14 
15### Node.js v4 Programming Model
16 
17Modern code-centric approach for TypeScript/JavaScript
18 
19### Python v2 Programming Model
20 
21Decorator-based approach for Python functions
22 
23## Anti-Patterns
24 
25### ❌ Blocking Async Calls
26 
27### ❌ New HttpClient Per Request
28 
29### ❌ In-Process Model for New Projects
30 
31## ⚠️ Sharp Edges
32 
33| Issue | Severity | Solution |
34|-------|----------|----------|
35| Issue | high | ## Use async pattern with Durable Functions |
36| Issue | high | ## Use IHttpClientFactory (Recommended) |
37| Issue | high | ## Always use async/await |
38| Issue | medium | ## Configure maximum timeout (Consumption) |
39| Issue | high | ## Use isolated worker for new projects |
40| Issue | medium | ## Configure Application Insights properly |
41| Issue | medium | ## Check extension bundle (most common) |
42| Issue | medium | ## Add warmup trigger to initialize your code |
43