已存在具有相同键的条目

Question

我正在 Umbraco 7 中构建站点。我使用的是 7。3.x 现在更新到 7.4.0。在随机的情况下，网站会崩溃，我会收到以下消息。

 [ArgumentException: An entry with the same key already exists.]
   System.ThrowHelper.ThrowArgumentException(ExceptionResource resource) +52
   System.Collections.Generic.SortedList`2.Add(TKey key, TValue value) +6744873
   Umbraco.Core.MainDom.Register(Action install, Action release, Int32 weight) +128
   Umbraco.Core.Sync.DatabaseServerMessenger.Boot() +55
   Umbraco.Web.BatchedDatabaseServerMessenger.Startup() +186
   Umbraco.Web.BatchedDatabaseServerMessengerStartup.ApplicationStarted(UmbracoApplicationBase umbracoApplication, ApplicationContext applicationContext) +63
   Umbraco.Core.ApplicationEventHandler.OnApplicationStarted(UmbracoApplicationBase umbracoApplication, ApplicationContext applicationContext) +37
   Umbraco.Core.CoreBootManager.<Complete>b__a(IApplicationEventHandler x) +230
   Umbraco.Core.EnumerableExtensions.ForEach(IEnumerable`1 items, Action`1 action) +141
   Umbraco.Core.CoreBootManager.Complete(Action`1 afterComplete) +293
   Umbraco.Web.WebBootManager.Complete(Action`1 afterComplete) +60
   Umbraco.Core.UmbracoApplicationBase.StartApplication(Object sender, EventArgs e) +234
   Umbraco.Core.UmbracoApplicationBase.Application_Start(Object sender, EventArgs e) +34

我已经缩小了问题范围，它与检查索引有关。在开发环境中，我只需要重建它就可以正常工作，但在测试中我们需要停止应用程序池删除检查索引并重新启动。

我也是从日志中得到的

2016-02-16 08:12:50,006 [P4656/D62/T1] INFO  Umbraco.Core.DatabaseContext - CanConnect = True
 2016-02-16 08:12:50,051 [P4656/D62/T1] INFO  Umbraco.Core.DatabaseContext - CanConnect = True
 2016-02-16 08:12:50,051 [P4656/D62/T1] INFO  Umbraco.Core.DatabaseContext - CanConnect = True
 2016-02-16 08:12:50,072 [P4656/D62/T1] INFO  Umbraco.Core.DatabaseContext - CanConnect = True
 2016-02-16 08:12:50,072 [P4656/D62/T1] ERROR Umbraco.Core.CoreBootManager - An error occurred running OnApplicationStarted for handler Umbraco.Web.BatchedDatabaseServerMessengerStartup
System.ArgumentException: An entry with the same key already exists.
   at System.ThrowHelper.ThrowArgumentException(ExceptionResource resource)
   at System.Collections.Generic.SortedList`2.Add(TKey key, TValue value)
   at Umbraco.Core.MainDom.Register(Action install, Action release, Int32 weight)
   at Umbraco.Core.Sync.DatabaseServerMessenger.Boot()
   at Umbraco.Web.BatchedDatabaseServerMessenger.Startup()
   at Umbraco.Web.BatchedDatabaseServerMessengerStartup.ApplicationStarted(UmbracoApplicationBase umbracoApplication, ApplicationContext applicationContext)
   at Umbraco.Core.ApplicationEventHandler.OnApplicationStarted(UmbracoApplicationBase umbracoApplication, ApplicationContext applicationContext)
   at Umbraco.Core.CoreBootManager.<Complete>b__a(IApplicationEventHandler x)
 2016-02-16 08:12:50,074 [P4656/D62/T1] ERROR Umbraco.Core.UmbracoApplicationBase - An unhandled exception occurred
System.ArgumentException: An entry with the same key already exists.
   at System.ThrowHelper.ThrowArgumentException(ExceptionResource resource)
   at System.Collections.Generic.SortedList`2.Add(TKey key, TValue value)
   at Umbraco.Core.MainDom.Register(Action install, Action release, Int32 weight)
   at Umbraco.Core.Sync.DatabaseServerMessenger.Boot()
   at Umbraco.Web.BatchedDatabaseServerMessenger.Startup()
   at Umbraco.Web.BatchedDatabaseServerMessengerStartup.ApplicationStarted(UmbracoApplicationBase umbracoApplication, ApplicationContext applicationContext)
   at Umbraco.Core.ApplicationEventHandler.OnApplicationStarted(UmbracoApplicationBase umbracoApplication, ApplicationContext applicationContext)
   at Umbraco.Core.CoreBootManager.<Complete>b__a(IApplicationEventHandler x)
   at Umbraco.Core.EnumerableExtensions.ForEach[TItem](IEnumerable`1 items, Action`1 action)
   at Umbraco.Core.CoreBootManager.Complete(Action`1 afterComplete)
   at Umbraco.Web.WebBootManager.Complete(Action`1 afterComplete)
   at Umbraco.Core.UmbracoApplicationBase.StartApplication(Object sender, EventArgs e)
   at Umbraco.Core.UmbracoApplicationBase.Application_Start(Object sender, EventArgs e)

我了解到这可能与重复用户有关，但数据库中不存在此类问题。

可能导致此问题的另一个问题是开发站点和测试站点共享同一个 Umbraco 数据库。我不确定这是否会导致这种冲突。

无论如何，我对这个错误感到很困惑，我们将不胜感激任何帮助，因为它真的很重要。

提前致谢，瓦西利斯

Answer 1

可以共享数据库，但您需要将其设置为负载平衡环境。（缓存）

按照指南进行操作 https://our.umbraco.org/documentation/Getting-Started/Setup/Server-Setup/load-balancing/

已存在具有相同键的条目

An entry with the same key already exists

c#

umbraco7