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.NET Forum / ASP.NET / Caching / April 2004Maximum value for OutputCache Duration
According to the documention the maximum value for duration is a positive integer (2147483647), but if i specify the max value for an integer then it thows the following error. Specified argument was out of the range of valid values. Parameter name: delta can any one help. Regards Ashish M Bhonkiya Which documentation and duration of what? -rwg This is what I think, not necessarily what is accurate! -------------------- | From: "Ashish M Bhonkiya" <bhonkiya@hotmail.com.nospam> | Subject: Maximum value for OutputCache Duration [quoted text clipped - 10 lines] | Regards | Ashish M Bhonkiya if you include the following on the html of the aspx pag <%@ outputcache duration="0" varybyparam="none" % the following error will com Parser Error Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately. Parser Error Message: The 'duration' attribute must be set to a positive integer valu Source Error: Line 1: <%@ Page language="c#" Codebehind="infinitecaching.aspx.cs" AutoEventWireup="false" Inherits="aspdotnetcaching.infinitecaching" % Line 2: <%@ outputcache duration="0" varybyparam="none" % Line 3: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" Line 4: <html if you see the errormessage it says the The 'duration' attribute must be set to a positive integer value. Now according to me i am using windows xp machine, and the maximum value for the integer i have computed as 2 to the power 32 minus 1 which is "2147483647" but then i get the erro Specified argument was out of the range of valid values. Parameter name: delta Regard Ashish M Bhonkiy ----- "rwg" wrote: ---- Which documentation and duration of what? -rw This is what I think, not necessarily what is accurate ------------------- | From: "Ashish M Bhonkiya" <bhonkiya@hotmail.com.nospam | Subject: Maximum value for OutputCache Duration | Date: Mon, 19 Apr 2004 16:34:08 +053 | Lines: 1 | | According to the documention the maximum value for duration is a positiv | integer (2147483647), but if i specify the max value for an integer then i | thows the following error | Specified argument was out of the range of valid values. Parameter name | delt | can any one help | | Regard | Ashish M Bhonkiy The number, 2147483647 corresponds to a cached time of about 68 years! Do you really need your data held in cache that long? In your code below, you have 0 seconds set as the duration, which means you DON'T want the page cached. In this case you should just remove the page cache directive altogether. The OutputCache is best used when you have high volume in a short period of time with minimal changes to the output during that time. In these cases, setting the cache to as small of a number as 30 or 60 can dramatically reduce server load. This was how the OutputCache was intended to be used. If you need something held significantly longer than this, I would suggest the application.cache or writing to a file. > if you include the following on the html of the aspx page > <%@ outputcache duration="0" varybyparam="none" %> > the following error will come > Parser Error > Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately. > Parser Error Message: The 'duration' attribute must be set to a positive integer value > [quoted text clipped - 6 lines] > > if you see the errormessage it says the The 'duration' attribute must be set to a positive integer value. Now according to me i am using windows xp machine, and the maximum value for the integer i have computed as > 2 to the power 32 minus 1 which is "2147483647" but then i get the erro > Specified argument was out of the range of valid values. Parameter name: delta [quoted text clipped - 23 lines] > | Regards > | Ashish M Bhonkiya Hi Scott, thanks for your reply. in the code i have specified 0 just to reproduce the error message, which displays the possible values for the duration attribute (a positive integer). i agree this is a huge time (68 years) but then if the error message displays that it can be a positive integer it should accept the values in that range. I was just trying to check the boundary conditions for this range and it fails, does this means that its a bug as it fails the boundary conditions ? can any one explain me why ?? FYI the maximum time it allows is for one year and not more than that. Thanks for your Time Ashish M Bhonkiya > The number, 2147483647 corresponds to a cached time of about 68 years! Do > you really need your data held in cache that long? [quoted text clipped - 63 lines] > > | Regards > > | Ashish M Bhonkiya I would guess it's just a documentation issue. > Hi Scott, > [quoted text clipped - 89 lines] > > > | Regards > > > | Ashish M Bhonkiya | that range. I was just trying to check the boundary conditions for this | range and it fails, does this means that its a bug as it fails the boundary | can any one explain me why ?? If your number if too small it gives you a "Parser Error" which tells you that you need an integer greater than zero, and if it's too large you get a "Specified argument was out of the range of valid values" error. They are not great messages, but it seems to be working. -rwg This is what I think, not necessarily what is accurate! -------------------- | From: "Ashish M Bhonkiya" <bhonkiya@hotmail.com.nospam> | References: <efUZ43fJEHA.3712@TK2MSFTNGP09.phx.gbl> <5Gm6eghJEHA.3564@cpmsftngxa10.phx.gbl> <024088C3-439C-453C-8328- 82991B049C8A@microsoft.com> <uusQEMkJEHA.3596@tk2msftngp13.phx.gbl> | Subject: Re: Maximum value for OutputCache Duration | Date: Tue, 20 Apr 2004 09:46:16 +0530 [quoted text clipped - 91 lines] | > > | Regards | > > | Ashish M Bhonkiya Hello, Ashish: This one year limitation is due to the implementation of the System.Web.HttpCachePolicy class on the .NET Framework class library. The documentation for the method "public void SetMaxAge(Timespan delta)" states that "delta" must be between Timespan.Zero and one year, or an ArgumentOutOfRangeException will be thrown. I don't know why they set this upper bound to this value, but it's there. Maybe they just thought it was reasonable. But, I think all of us will agree that there is a documentation issue to not show the range of valid values of the "duration" attribute on <%@ OutputCache %> directive help page. [], Marcelo > Hi Scott, > [quoted text clipped - 89 lines] > > > | Regards > > > | Ashish M Bhonkiya 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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