Duplicate Keys with different Labels about appconfiguration HOT 2 CLOSED

Thanks for trying this out @kamalsivalingam.

By default, the config provider of the App Configuration will load keys with no labels for simplicity. When labels are used, they can be loaded with the Use function. The example below loads all keys with the label mylabel.

configBuilder.AddAzureAppConfiguration(options =>
{
    options.Connect(configuration["connection_string"])
           .Use(KeyFilter.Any, "mylabel")
});

Labels provide an extra dimension to key-values, so each key can have multiple values at the same time. It can be used to differentiate config for different environments (dev, test, ...), different microservices (app1, app2, ...), different regions and so on so forth. We also expect it will be a very typical use of labels for versioning. For example, I have config labeled with v1 and v2. In my app, I want the v2 config overwrites the v1 config when they have the same key. Then I will have something like this

configBuilder.AddAzureAppConfiguration(options =>
{
    options.Connect(configuration["connection_string"])
           .Use(KeyFilter.Any, "v1")
           .Use(KeyFilter.Any, "v2")
});

Please check out the AzureAppConfigurationOptions class, which provides APIs for filtering key-values, watching for changes, connecting with managed identity and so on.

Hope this helps. Please let me know if you have any other questions.

from appconfiguration.

I've added 2 keys with same name (poc-api:myvalue), one with label "Development", the other with no label.

With this code :

public static IWebHostBuilder CreateWebHostBuilder(string[] args) =>
        WebHost.CreateDefaultBuilder(args).ConfigureAppConfiguration((hostingContext, config) =>
            {
                var settings = config.Build();
                config.AddAzureAppConfiguration(options =>
                {
                    options.Connect(settings["ConnectionStrings:AppConfiguration"])
                        .Use(KeyFilter.Any, LabelFilter.Null)
                        .Use(KeyFilter.Any, "Development")
                        .UseFeatureFlags(optionsff =>
                        {
                            optionsff.PollInterval = new TimeSpan(0, 0, 5);
                        }); 
                    options.Watch("poc-api:myvalue",new TimeSpan(0,0,5));
                    
                }); ;
            })
            .UseStartup<Startup>();

It seems I cannot get the value for the key with label "Development", i always get the one without the label

using

<PackageReference Include="Microsoft.Extensions.Configuration.AzureAppConfiguration" Version="1.0.0-preview-008920001-990" />

Code "Inspired" by
https://docs.microsoft.com/en-us/azure/azure-app-configuration/howto-best-practices

from appconfiguration.