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.NET Forum / ASP.NET / Caching / July 2005Cache.Remove() in a clustered environment
In a clustered environment does Cache.Remove() kill all instances of the cache item, or does it just kill the item from the box that the code is currently executing on? For example, suppose I have two boxes within a cluster. If a request gets served up to Box 1, and Cache.Remove(foo) is executed, does foo get removed from both Box 1 and Box 2, or just Box 1. Hello, The Cache object is restricted to being used only within an application running on a single machine. Therefore, I think Cache.Remove() only remove cached objects on one server. Luke that's correct  SignatureRegards, Alvin Bruney - ASP.NET MVP [Shameless Author Plug] The Microsoft Office Web Components Black Book with .NET Now available @ www.lulu.com/owc, Amazon.com etc > Hello, > [quoted text clipped - 3 lines] > > Luke so how to easy migrate asp.net project that uses cache and session objects from single server to cluster servers? > that's correct > [quoted text clipped - 5 lines] >> >> Luke Firstly, you are limited by the technology. If you need to share cache in a cluster, it needs to be in the database or in a third party application that makes this functionality available. SignatureRegards, Alvin Bruney - ASP.NET MVP [Shameless Author Plug] The Microsoft Office Web Components Black Book with .NET Now available @ www.lulu.com/owc, Amazon.com etc > so how to easy migrate asp.net project that uses cache and session objects > from single server to cluster servers? [quoted text clipped - 8 lines] >>> >>> Luke Thank you very much for your response. This explains a lot. Do you know where I could find some information, or possibly sample code, that would clear the Cache for all servers in the cluster. The only way I can think of is to actually run Cache.Remove() on each server. That would force me to find a way to make a request to each server. It seems like there must be a more elegant solution. > Hello, > [quoted text clipped - 3 lines] > > Luke Yup, that's pretty much it. Or another cheesy way is to force an application pool recycle. You can actually generate the recylce thru a script app that runs on the servers. If you google, you should be able to find the app pool recycle script. SignatureRegards, Alvin Bruney - ASP.NET MVP [Shameless Author Plug] The Microsoft Office Web Components Black Book with .NET Now available @ www.lulu.com/owc, Amazon.com etc > Thank you very much for your response. This explains a lot. > [quoted text clipped - 14 lines] >> >> Luke Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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