Tidy up - Unused Project and Nuget package reference using Visual Studio 2019

If you are a Developer/Architect using Visual Studio as IDE for your development activities, this blog post will be of your interest. During the Ignite 2021 conference, Microsoft released Visual Studio 2019 v16.9 and v16.10 Preview 1. As part of version 16.10 Preview 1, one of the cool features they introduced is to "Remove Unused References..." for any Projects and Nuget packages that are not in use. At the time of writing this blog post, we have Visual Studio Version 16.10.0 (official release) which includes this new feature.  As part of development, we generally get carried away and introduce new Nuget package references to your project and add new references to your Projects. By the end of development, you will not be 100% sure which are not being referenced and unused which means you will leave those unused project references in your application. Now you might be wondering what's the big deal in it since it doesn't harm. The advantage of removing unused project r...
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Immutable Storage for Azure Blob Storage

Azure Blob Storage provides scalable, cost-efficient storage in the cloud. In general, Blob Storage holds organization data like back-ups, unstructured data, files, etc. With the Immutable Storage feature, it allows storing business-related information in the WORM (Write-Once-Read-Many) state. Immutable storage feature is available in all Azure public regions.

Immutable storage feature is set at the container level through an Access policy. Policies apply to all the blobs in the container, can be applied either for the new or existing container and supports all blob tiers (hot, cold, and archive).

Immutable storage supports two policy type:

  • Time-based retention
  • Legal hold
Note: Immutable policy type can be applied either through Azure Portal or Azure CLI. You cannot delete or modify any files within the container when any one of the policy is enabled on the container.

Immutable storage - Policy type

Time-based retention

If you enable a Time-based retention policy all blobs in the container will stay in the immutable state for the duration you define as part of the policy. The retention interval value should be within the range of 1to 400 years. By default, the time-based retention policy will be created in an unlocked state. It's always recommended policy must be in a locked state. The maximum number of edits for locked policy to change retention time interval is 5. In terms of the Audit feature for this policy maximum of seven time-based retention policy audit logs are retained for a locked policy. Once you enable the locked policy it can't be deleted or reversed. 

Note: If a time-based retention policy applied to an existing container, the effective retention period for the existing blob will be from the time of its creation.

Time-based retention policy

Legal hold

When the retention interval is not known or clear, users can set legal holds. Each legal hold policy needs to be associated with one or more tags. Tags are used as a named identifier to categorize and describe the purpose of the hold.
Legal Hold policy

To retrieve the list of tags associated with the container of Legal hold policy run the following command 

az storage container legal-hold show --account-name $storageaccountname --container-name $containername

Legal hold tags



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