Increase in Azure Storage costs after upgrading AspNetCore.HealthChecks.AzureStorage to a newer version

[stephen-sherman]

What happened:

Noted an ~8x increase in "LRS List and Create Container Operations" and daily Azure Storage costs after upgrading AspNetCore.HealthChecks.AzureStorage to a newer version in a .NET 8 Umbraco.Cms 13 solution. Rolling back returns this to its previous rate.

• AspNetCore.HealthChecks.AzureStorage 5.0.1 - Baseline daily costs
• AspNetCore.HealthChecks.AzureStorage 6.1.2 - 10x baseline daily costs
• AspNetCore.HealthChecks.AzureStorage 7.0.0 - No data due to issues with Microsoft.Bcl.AsyncInterfaces
• AspNetCore.HealthChecks.Azure.Storage.Blobs 8.0.1 - 8x baseline daily costs

What you expected to happen:

Daily Azure Storage costs to remain inline with those prior to upgrade.

How to reproduce it (as minimally and precisely as possible):

• Create Umbraco.Cms 13 solution with Azure Storage for media
• Install and configure AspNetCore.HealthChecks.AzureStorage version 5.0.1
• Deploy to Linux App Service Plan and observe daily Azure Storage costs
• Upgrade AspNetCore.HealthChecks.AzureStorage to version 6.1.2
• Deploy and observe daily Azure Storage costs

Source code sample:

Using AspNetCore.HealthChecks.AzureStorage:

public void ConfigureServices(IServiceCollection services)
{
    services
        .AddHealthChecks()
        .AddAzureBlobStorage(
            connectionString: _config["Umbraco:Storage:AzureBlob:Media:ConnectionString"],
            failureStatus: HealthStatus.Unhealthy);

Using AspNetCore.HealthChecks.Azure.Storage.Blobs:

public void ConfigureServices(IServiceCollection services)
        {
            services.AddSingleton(serviceProvider => new BlobServiceClient(_config["Umbraco:Storage:AzureBlob:Media:ConnectionString"]));

            services
                .AddHealthChecks()
                .AddAzureBlobStorage(
                    connectionString: _config["Umbraco:Storage:AzureBlob:Media:ConnectionString"],
                    failureStatus: HealthStatus.Unhealthy);

Anything else we need to know?:

Primarily looking to understand what changes between these versions could have this effect, and how to mitigate it.

Environment:

• .NET Core version: 8
• Healthchecks version: See above
• Operative system: Linux
• Others: Umbraco.Cms 13 solution