WebApp

Gin Feature Flags Web App

This is a Gin web application using a feature flag in Azure App Configuration to dynamically control the availability of a new web page without restarting or redeploying it.

Prerequisites

• An Azure account with an active subscription
• An Azure App Configuration store
• A feature flag named "Beta" in your App Configuration store
• Go 1.23 or later

Running the Example

1. Create a feature flag in Azure App Configuration:

   Add a feature flag called Beta to the App Configuration store and leave Label and Description with their default values. For more information about how to add feature flags to a store using the Azure portal or the CLI, go to Create a feature flag.

2. Set environment variable:

   Windows PowerShell:

   $env:AZURE_APPCONFIG_CONNECTION_STRING = "your-connection-string"

   Windows Command Prompt:

   setx AZURE_APPCONFIG_CONNECTION_STRING "your-connection-string"

   Linux/macOS:

   export AZURE_APPCONFIG_CONNECTION_STRING="your-connection-string"

Running the Application

go run main.go

Open http://localhost:8080 in your browser.

Testing the Feature Flag

1. Start the application - Beta menu item should be hidden (feature disabled)
2. Go to Azure portal → App Configuration → Feature manager
3. Enable the "Beta" feature flag
4. Wait up to 30 seconds and refresh the page
5. Observe the Beta menu item appears in navigation
6. Click the Beta menu to access the Beta page
7. Disable the flag again and test that /beta returns 404