Retry Pattern

Details in Retry pattern - Azure Architecture Center | Microsoft Learn

Problem

Faults include the momentary loss of network connectivity to components and services, the temporary unavailability of a service, or timeouts that occur when a service is busy.
Faults are typically self-correcting, and if the action that triggered a fault is repeated after a suitable delay

Solution

Introduce a retry mechanism to minimize the impact on the performance.
There are a lot of Azure resources capable of helping to implement a retry pattern even though we know that we should do it in the code :

→ Azure Service Bus; Azure Functions; Azure API Management; Azure Cosmos DB.

→ In the code, we use the .NET Library

Retry In Practice

Code & Explanation : Implement a retry policy using the Azure Storage client library for .NET - Azure Storage | Microsoft Learn

// Provide the client configuration options for connecting to Azure Blob Storage
BlobClientOptions blobOptions = new BlobClientOptions()
{
    Retry = {
        Delay = TimeSpan.FromSeconds(2),
        MaxRetries = 5,
        Mode = RetryMode.Exponential,
        MaxDelay = TimeSpan.FromSeconds(10),
        NetworkTimeout = TimeSpan.FromSeconds(100)
    },
};
BlobServiceClient blobServiceClient = new BlobServiceClient(accountUri, new DefaultAzureCredential(), blobOptions);