具有相同密钥的条目已经存在

Question

我正在Umbraco 7中构建一个站点。我在7.3.x上现在更新为7.4.0。在随机的场合，该网站将中断，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 

我缩小了这个问题，它与检查指数有关。在开发环境中，我只需要重建并且工作正常，但是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。

我也是从我已阅读，这可能涉及到重复的用户，但存在于数据库中没有这样的事日志

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) 

得到这个。

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相同的Umbraco数据库。我不确定这是否会导致这种冲突。

无论如何，我对这个错误感到非常困惑，任何帮助都会受到高度赞赏，因为它非常重要。

由于提前，瓦西利斯

Answer 1

这是可以共享的数据库，但是你需要设置它作为一个负载平衡环境。 （缓存）

按照该指南 https://our.umbraco.org/documentation/Getting-Started/Setup/Server-Setup/load-balancing/