读取 ASP.NET 会话变量非常慢（30 秒）！
在调试执行缓慢的操作时，我发现（令我惊讶的是）该行：
if (HttpContext.Current.Session["CurrentCompany"] == null)
需要大约 30 秒 来执行。
可能发生什么事情！？有人见过这样的事情吗？
（它位于具有 StateServer 存储会话的负载平衡配置中，这可能相关吗？）
Debugging an operation that's performing slowly, I've discovered (to my astonishment) that the line:
if (HttpContext.Current.Session["CurrentCompany"] == null)
takes about 30 seconds to execute.
What could possibly be happening!? Anyone seen anything like this before?
(It's in a loadbalanced config with StateServer storing session, could that be related?)
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我找到了一个解决方法：我将 web.config 中的会话提供程序
从“StateServer”更改为“InProc”：
...并且暂停消失了。
（很可能它无法到达状态服务器，当前服务器不是它最初运行的位置）。
感谢您的所有建议，特别是@Hari 和@dougajmcdonald。
。
事后编辑
这可能会对以后的人有所帮助：这个问题的根本原因似乎是一种方法，它发出了大量非常繁重的 SQL 查询，这些查询与这个状态服务器问题大约在同一时间发生。我认为这些是相关的，但不确定如何相关。从那以后我遇到了类似的问题，所以如果您遇到这样的会话问题，请查找大量的数据库活动。
I found a workaround: I changed the session provider in the web.config:
from "StateServer" to "InProc":
... and the pause went away.
(Most likely it had trouble reaching the stateserver, the current server is not where it was originally running from).
Thanks to all your suggestions, especially @Hari and @dougajmcdonald.
.
Hindsight edit
This may help someone later: The root cause of this issue seems to have been a method that made a huge number of very heavy SQL queries that occurred around the same time as this stateserver problem. I think these are related, not exactly sure how. I've had similar problems since, so if you have a session issue like this, look for heavy DB activity.