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Editorial Team
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Asked: 2026-05-21T02:43:03+00:00

I’m trying to learn about caching in asp.net and am having difficulty understanding the

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I’m trying to learn about caching in asp.net and am having difficulty understanding the following questions from this article (http://msdn.microsoft.com/en-us/library/18c1wd61%28v=vs.71%29.aspx):

  1. When adding items to the cache, I understand that you can specify a time limit for how long the data will persist. However, does this data persist only for this user or, if another user visits the same page simultaneously, will this data persist for that user as well?
  2. If the data is added to a cache, where exactly does it reside? Is it on the server or a user’s browser? If it’s on the server, how does the framework decide when it needs to release the resources?
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  1. Editorial Team

    ASP .NET offers a few forms of caching and the form demonstrated on that page is (arbitrary) data caching (using the Cache object). So to answer your questions:

    1.) Data cached using this method is available to all users (in a threadsafe manner). But if you need to store user-specific data, use session state instead.

    2.) Data is cached server side and is released when any of the following occur:

    • It becomes stale according to the expiration time explicitly set by the caller
    • One of the resources the cached data depends on is altered
    • Or the server simply requires more memory (and the data has a relatively low caching priority compared to other cached data)
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