RavenDB 连接问题

Question

我们发现与 RavenDB 连接相关的问题明显增多。我们使用的是 IIS 服务器连接方式。

我检查了索引错误，但没有看到任何列出的内容。

此服务器使用 MySQL 服务器进行复制，并且从今天开始的日志中出现一个与复制相关的错误。客户端堆栈跟踪错误是否真的来自复制的服务器而不是 Raven？

编辑

在这种情况下，客户端是一个每天运行数百次的单一作业...成功了很多次，但由于这些错误而失败的次数越来越多。

Sql Replication 复制失败

以下是来自客户端日志的部分堆栈跟踪错误：

[WebException: Unable to connect to the remote server]
System.Net.HttpWebRequest.GetRequestStream(TransportContext& context):367
System.Net.HttpWebRequest.GetRequestStream():3
Raven.Abstractions.Connection.HttpRequestHelper.WriteDataToRequest(HttpWebRequest req, String data, Boolean disableCompression):7
Raven.Client.Connection.ServerClient.DirectBatch(IEnumerable`1 commandDatas, String operationUrl):171
Raven.Client.Connection.ReplicationInformer.TryOperation[T](Func`2 operation, String operationUrl, Boolean avoidThrowing, T& result, Boolean& wasTimeout):35
Raven.Client.Connection.ReplicationInformer.ExecuteWithReplication[T](String method, String primaryUrl, Int32 currentRequest, Int32 currentReadStripingBase, Func`2 operation):169
Raven.Client.Connection.ServerClient.ExecuteWithReplication[T](String method, Func`2 operation):33
Raven.Client.Document.DocumentSession.SaveChanges():65

和

[WebException: Unable to connect to the remote server]
System.Net.HttpWebRequest.GetResponse():570
Raven.Client.Connection.HttpJsonRequest.ReadJsonInternal(Func`1 getResponse):45
Raven.Client.Connection.HttpJsonRequest.ReadResponseJson():206
Raven.Client.Connection.ServerClient.DirectGet(String[] ids, String operationUrl, String[] includes, String transformer, Dictionary`2 queryInputs, Boolean metadataOnly):631
Raven.Client.Connection.ServerClient+<>c__DisplayClass77.<Get>b__76(String u):51
Raven.Client.Connection.ReplicationInformer.TryOperation[T](Func`2 operation, String operationUrl, Boolean avoidThrowing, T& result, Boolean& wasTimeout):35
Raven.Client.Connection.ReplicationInformer.ExecuteWithReplication[T](String method, String primaryUrl, Int32 currentRequest, Int32 currentReadStripingBase, Func`2 operation):169
Raven.Client.Connection.ServerClient.ExecuteWithReplication[T](String method, Func`2 operation):33
Raven.Client.Document.HiLoKeyGenerator.GetDocument(IDatabaseCommands databaseCommands):41
Raven.Client.Document.HiLoKeyGenerator.GetNextRange(IDatabaseCommands databaseCommands):109
Raven.Client.Document.HiLoKeyGenerator.NextId(IDatabaseCommands commands):58
Raven.Client.Document.HiLoKeyGenerator.GenerateDocumentKey(IDatabaseCommands databaseCommands, DocumentConvention convention, Object entity):9
Raven.Client.Document.MultiTypeHiLoKeyGenerator.GenerateDocumentKey(IDatabaseCommands databaseCommands, DocumentConvention conventions, Object entity):174
Raven.Client.Document.DocumentStore+<>c__DisplayClass4.<Initialize>b__2(String dbName, IDatabaseCommands databaseCommands, Object entity):20
Raven.Client.Document.DocumentConvention.GenerateDocumentKey(String dbName, IDatabaseCommands databaseCommands, Object entity):164
Raven.Client.Document.GenerateEntityIdOnTheClient.GenerateDocumentKeyForStorage(Object entity):46
Raven.Client.Document.InMemoryDocumentSessionOperations.StoreInternal(Object entity, Etag etag, String id, Boolean forceConcurrencyCheck):79
Raven.Client.Document.InMemoryDocumentSessionOperations.Store(Object entity):23

Answer 1

错误提示客户端无法连接到服务器。可能客户端离线。或者服务器是。或者防火墙挡住了路。或者可能服务器在那里，但在向客户端返回响应之前就崩溃了。如果问题是间歇性的，并且用户没有抱怨，那可能只是您可以忽略的连接问题。如果用户抱怨，您应该查看服务器端日志。