Restoring Soft-Deleted Blobs with multithreading in Azure Storage Using C#

Blob soft delete is an essential feature that safeguards your data against accidental deletions or overwrites. By retaining deleted data for a specified period, it ensures data integrity and availability, even in the event of human error. However, restoring data in the soft delete state can be more labor-intensive, as the undelete API must be called for each individual deleted blob. Currently, there is no option to bulk undelete all blobs.

In this blog, we provide a sample C# code that will help you restore soft-deleted data efficiently. The code leverages multiple threads to expedite the restoration process, making it particularly effective if you have a large number of blobs to restore. Additionally, this program can be configured to undelete blobs within a specific container or directory, rather than scanning the entire storage account.

To run this program, follow these steps:

• Install .NET SDK: Ensure you have the .NET SDK installed on your machine.
• Connect to Azure Account:

• Add NuGet Source:

• Create a New Console Application:

• Add the following code to Program.cs.

Replace xxxx with your specific storage account and container name. If you need to restore a particular directory, provide the directory name; otherwise, leave it empty to scan the entire container. The code is configured to run with 500 threads by default, but you can adjust this number according to your needs.

• Add Required Packages:

• Build the Project:

• Run the Program:

Once the application is running, you can monitor the console window to track its progress and identify any potential issues or failures.