This document discusses using Azure App Configuration to centrally store configuration settings for .NET applications. Azure App Configuration provides a managed configuration store in the cloud with different pricing tiers. It integrates with .NET applications using managed identities for authentication. The document also covers refreshing settings without app restarts, mapping environments to different configuration stores, using feature flags, and integrating with Azure Key Vault for secrets management.

1. Azure App Configuration mit
.NET Applications
Christian Nagel
https://csharp.christiannagel.com

2. Christian Nagel
• Training
• Coaching
• Consulting
• Development
• Microsoft MVP
• www.cninnovation.com
• csharp.christiannagel.com
• @christiannagel

3. Topics
• .NET Configuration
• Azure App Configuration
• Integration with .NET

4. .NET Configuration
• Host Class
• Dependency Injection Container
• Logging
• Configuration

5. Configuration
Flexiblity
• JSON Files
• Environment-specific JSON Files
• Environment variables
• Command-line arguments
• User Secrets

6. Configuration
and Microsoft
Azure
• Azure App Services
• Azure Functions
• …
Technologies
• Database Connection Strings
• Links to APIs
• …
• Common Configuration for Solutions?
Settings

7. Azure App Configuration
• Managed Configuration Store
• Central for the Solution / Subscription
• SKUs
• Free (1,000 requests per day, no SLA)
• Standard (20,000 requests per hour, 99.9% SLA)

8. Managed Identites
• System-Assigned Managed Identity
• Managed by the service instance
• User-Assigned Managed Identity
• Standalone Azure resource

9. Refresh Settings
• Without Application-Restart
• Use a Sentinel key, refresh settings if the sentinel changes
• Use IOptionsSnapshot
• Alternative to polling: Notifications via Azure Event Grid

10. Mapping the Environment
• Production / Staging
• Test / Developer
• Use Labels with Azure App Configuration
• Isolation between environments: use separate stores

11. Feature Flags
• New deployment patterns
• Offer features for early adopters
• Features based on timings
• Percentage of users
• Custom feature filters

12. Secrets in the Cloud
• Add Key Vault to Azure App Configuration
• Hardware-level encryption
• Granular access policies
• Management operations (certificate rotation)
Azure Key Vault
Administrator
Developer
Security Officer

13. Summary
.NET Configuration – flexible
and easy to use
Azure App Configuration – a
central store
Managed Identities for easier
deployment configuration

14. For action
• Use .NET Configuration
• Azure App Configuration – a central store
• https://github.com/christiannagel/bastaspring2021

15. Thank you!