ViewComponent 和 Redis 的 Asp.Net Core 2 问题

Question

我正在使用基本应用程序，但我遇到了 Core 2.0 的问题，而我在 1.1 中没有。

该站点在 Core 2.0 上具有前端和后端 api。前端布局检查Redis上是否存在条目（Windows本地安装）用于填充导航栏，如果不存在则调用api，api获取数据，使用数据在redis上创建条目，并将数据返回到前端。

直接访问视图时一切正常，但如果其中一个视图使用例如

return RedirectToAction("Blah2");

重定向工作正常，但是当视图组件检查 Redis 中是否存在导航栏的条目时，服务器会挂起。意见是：

[HttpGet]
public IActionResult Blah1()
{
    return RedirectToAction("Blah2");
}

[HttpGet]
public IActionResult Blah2()
{
    return View();
}

视图组件中对Redis的检查是

var value = await _redisCache.GetAsync(userid + "-NavBar");

if (value != null)
{
    List<VMNavBar> mynavs = JsonConvert.DeserializeObject<List<VMNavBar>>(Encoding.UTF8.GetString(value));
    return View("Default", mynavs);
}
else
{
    ...
}

如果我直接访问视图“Blah2”它可以工作，但如果我访问“Blah1”，它会阻塞 var value = await _redisCache.GetAsync(userid + "-NavBar"); 和除了停止和重新启动前端应用程序之外，没有任何效果。

关于它为什么只在重定向时阻塞的任何想法，或者我如何找到它阻塞的原因，我没有收到任何错误，控制台没有给我任何东西

Microsoft.AspNetCore.Hosting.Internal.WebHost:Information: Request starting HTTP/1.1 GET http://localhost:55554/Dashboard/User/blah1  
Microsoft.AspNetCore.Hosting.Internal.WebHost:Information: Request starting HTTP/1.1 GET http://localhost:55554/Dashboard/User/blah1  
Microsoft.AspNetCore.Authentication.Cookies.CookieAuthenticationHandler:Information: AuthenticationScheme: Cookies was successfully authenticated.
Microsoft.AspNetCore.Authentication.Cookies.CookieAuthenticationHandler:Information: AuthenticationScheme: Cookies was successfully authenticated.
Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker:Information: Executing action method IRDevDashboardCore22.Areas.Dashboard.Controllers.UserController.Blah1 (IRDevDashboardCore22) with arguments ((null)) - ModelState is Valid
Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker:Information: Executing action method IRDevDashboardCore22.Areas.Dashboard.Controllers.UserController.Blah1 (IRDevDashboardCore22) with arguments ((null)) - ModelState is Valid
Microsoft.AspNetCore.Mvc.RedirectToActionResult:Information: Executing RedirectResult, redirecting to /Dashboard/User/Blah2.
Microsoft.AspNetCore.Mvc.RedirectToActionResult:Information: Executing RedirectResult, redirecting to /Dashboard/User/Blah2.
Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker:Information: Executed action IRDevDashboardCore22.Areas.Dashboard.Controllers.UserController.Blah1 (IRDevDashboardCore22) in 26.7977ms
Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker:Information: Executed action IRDevDashboardCore22.Areas.Dashboard.Controllers.UserController.Blah1 (IRDevDashboardCore22) in 26.7977ms
Microsoft.AspNetCore.Hosting.Internal.WebHost:Information: Request finished in 80.8103ms 302 
Microsoft.AspNetCore.Hosting.Internal.WebHost:Information: Request finished in 80.8103ms 302 
Microsoft.AspNetCore.Hosting.Internal.WebHost:Information: Request starting HTTP/1.1 GET http://localhost:55554/Dashboard/User/Blah2  
Microsoft.AspNetCore.Hosting.Internal.WebHost:Information: Request starting HTTP/1.1 GET http://localhost:55554/Dashboard/User/Blah2  
Microsoft.AspNetCore.Authentication.Cookies.CookieAuthenticationHandler:Information: AuthenticationScheme: Cookies was successfully authenticated.
Microsoft.AspNetCore.Authentication.Cookies.CookieAuthenticationHandler:Information: AuthenticationScheme: Cookies was successfully authenticated.
Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker:Information: Executing action method IRDevDashboardCore22.Areas.Dashboard.Controllers.UserController.Blah2 (IRDevDashboardCore22) with arguments ((null)) - ModelState is Valid
Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker:Information: Executing action method IRDevDashboardCore22.Areas.Dashboard.Controllers.UserController.Blah2 (IRDevDashboardCore22) with arguments ((null)) - ModelState is Valid
Microsoft.AspNetCore.Mvc.ViewFeatures.Internal.ViewResultExecutor:Information: Executing ViewResult, running view at path /Areas/Dashboard/Views/User/Blah2.cshtml.
Microsoft.AspNetCore.Mvc.ViewFeatures.Internal.ViewResultExecutor:Information: Executing ViewResult, running view at path /Areas/Dashboard/Views/User/Blah2.cshtml.

Answer 1

我找到了它，但我不明白为什么会这样

我不得不改变

var value = await _redisCache.GetAsync(userid + "-NavBar");

到

var value = await _redisCache.Get(userid + "-NavBar");

在视图组件中，阻止它有点愚蠢。