application-state

问题 We have a website that runs on two load balanced servers. We used the ASP.Net Application variable to make application state "online/ offline", or for some important messages across the application, So when i try update a application variable its available on one server but not on other. How i can manage a application variable across load balanced servers. What may I use? Of course keeping it as simple as possible. 回答1: Are you using sticky sessions? How often does the data change? Is

问题 We have a website that runs on two load balanced servers. We used the ASP.Net Application variable to make application state "online/ offline", or for some important messages across the application, So when i try update a application variable its available on one server but not on other. How i can manage a application variable across load balanced servers. What may I use? Of course keeping it as simple as possible. 回答1: Are you using sticky sessions? How often does the data change? Is

问题 Any good way to preserve ASP.NET Application state across restarts? I want to be able to set some values restart the app and have them still be there. I want to primarily do this for small "throw-away" test web apps that don't even need a database. Is there some way to do it with static members and serialization? web cache? UPDATE : Application should be able to update these values. Values could be custom objects like: public class Person { public string FirstName { get; set; } public string

问题 Any good way to preserve ASP.NET Application state across restarts? I want to be able to set some values restart the app and have them still be there. I want to primarily do this for small "throw-away" test web apps that don't even need a database. Is there some way to do it with static members and serialization? web cache? UPDATE : Application should be able to update these values. Values could be custom objects like: public class Person { public string FirstName { get; set; } public string

问题 I just read an article that describes how HttpApplicationState has AcquireRead() / AcquireWrite() functions to manage concurrent access. It continues to explain, that in some conditions however we need to use an explict Lock() and Unlock() on the Application object to avoid a Race condition. I am unable to understand why a race condition should exist for Application state if concurrent access is implicitly handled by the object. Could someone please explain this to me ? Why would I ever need

问题 I am busy converting a web application to MVC and have some information saved to Application variables used across multiple tenants/accounts to make things a bit more efficient. I realise the point of MVC is to keep things as stateless as possible, Sesion State obviously makes sense to have and exists in MVC but we dont want to just convert Application to Session variables as we would rather have something more global and more secure. Do MVC applications have Application Variables? I have

问题 I need to implement several application-level behavior in a project I'm currently working on. There are several things I need to get my head around: 1. Where and how do I define application level variables? 2. What is the lifetime of these variables? or more accuratly, in what scenarios are they discarded? (Application pool recycle? App binaries dropped from memory and recompiled on the next request? etc.) 3. Is the global.asax file a good place to put a session counter, or maybe storing the

问题 Let's say I wish to store an instance of the following in Application State, to be accessed very often. public class Example { public string A; public string B; public bool C; public int D; // ... } I can't decide whether to store the whole class together as Application["Example"] , or to store its properties individually as Application["ExampleA"] etc. My thinking is that ((Example)Application["Example"]).A might have to copy the whole class into memory just to access one property - is that

问题 I have code within my app delegate's application:didReceiveLocalNotification: method to display an UIAlertView for that local notification, whenever my app is in the foreground. If my app is within the background when the local notification arrives the user gets presented with the notification and is able to launch the app by selecting it. In this case my app comes to the foreground my App Delegate's applicationWillEnterForeground: is called. Afterwards though my didReceiveLocalNotification

问题 I've been working on the Android SDK platform, and it is a little unclear how to save an application's state. So given this minor re-tooling of the 'Hello, Android' example: package com.android.hello; import android.app.Activity; import android.os.Bundle; import android.widget.TextView; public class HelloAndroid extends Activity { private TextView mTextView = null; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate