DocumentDB TransientFaultHandling最佳实践

我一直在为受限制的DocumentDB客户端调用编写非常详细的重试逻辑。

以下示例是10次重试尝试的常见示例。

我的问题有两个方面：这是最好的做法，是否有一种不那么冗长的方式来处理这个问题？ 我看到有一个Microsoft.Azure.Documents.Client.TransientFaultHandling nuget包应该用更少的代码实现相同的结果，但我在StackOverflow或Google上找不到任何示例，似乎没有任何明确的文档可用来自微软。

int maxRetryAttempts = 10; while (maxRetryAttempts > 0) { try { // Attempt to call DocumentDB Method // ---[DocumentDB Method Here]--- } catch (DocumentClientException de) { if (de.StatusCode.HasValue) { var statusCode = (int)de.StatusCode; if (statusCode == 429 || statusCode == 503) { //Sleep for retry amount Thread.Sleep(de.RetryAfter); //Decrement max retry attempts maxRetryAttempts--; } } } catch (AggregateException ae) { foreach (Exception ex in ae.InnerExceptions) { if (ex is DocumentClientException) { var documentClientException = ex as DocumentClientException; var statusCode = (int)documentClientException.StatusCode; if (statusCode == 429 || statusCode == 503) { //Sleep for retry amount Thread.Sleep(documentClientException.RetryAfter); //Decrement max retry attempts maxRetryAttempts--; } else { throw; } } } } } if (maxRetryAttempts < 0) { //Max retry attempts reached } 

Answer 1

您可以使用DocumentU数据迁移工具的Github仓库中的TransientFaultHandling Nuget包找到示例代码：

https://github.com/Azure/azure-documentdb-datamigrationtool/blob/master/DocumentDb/Microsoft.DataTransfer.DocumentDb.FunctionalTests/DocumentDbHelper.cs

看起来像这样：

 private static IReliableReadWriteDocumentClient CreateClient(IDocumentDbConnectionSettings connectionSettings) { return new DocumentClient(new Uri(connectionSettings.AccountEndpoint), connectionSettings.AccountKey) .AsReliable(new FixedInterval(10, TimeSpan.FromSeconds(1))); }