Classic ASP Discussion - Create a 3 day cache

Create a 3 day cache

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Category: General Discussion
Forum Name: Classic ASP Discussion
Forum Description: Discussion on Active Server Pages (Classic ASP).
URL: https://forums.webwiz.net/forum_posts.asp?TID=31768
Printed Date: 28 March 2026 at 3:30pm
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Topic: Create a 3 day cache

Posted By: Roberto Randall
Subject: Create a 3 day cache
Date Posted: 24 June 2023 at 4:44pm

If I want to create a 3 day cache to put on a page, is this correct?

Response.Expires = 4320
Response.ExpiresAbsolute = DateAdd("d", 3, Now())
Response.AddHeader "pragma","public"
Response.AddHeader "cache-control","public,max-age=259200"
Response.CacheControl = "public"

I am doing some tests for the images and I am not sure if this code is correct so that the page where I want to put it has a cache of 3 days.

Thank you.

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Replies:

Posted By: WebWiz-Bruce
Date Posted: 25 June 2023 at 11:15am

This should work for the actual page itself, but for the images you will need to configure output caching through the websites web.config file.

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Posted By: Roberto Randall
Date Posted: 25 June 2023 at 12:42pm

Thanks for answering.

Searching the net I have read in Microsoft:

The Expires, https://learn.microsoft.com/en-us/dotnet/api/system.web.httpresponse.expiresabsolute?view=netframework-4.8.1" rel="nofollow - ExpiresAbsolute and https://learn.microsoft.com/en-us/dotnet/api/system.web.httpresponse.cachecontrol?view=netframework-4.8.1" rel="nofollow - CacheControl properties have been deprecated in favor of the methods of the https://learn.microsoft.com/en-us/dotnet/api/system.web.httpcachepolicy?view=netframework-4.8.1" rel="nofollow - HttpCachePolicy class available through the https://learn.microsoft.com/en-us/dotnet/api/system.web.httpresponse.cache?view=netframework-4.8.1" rel="nofollow - Cache intrinsic object to control the Internet Information Services (IIS) output cache and client caches.

It is that I am doing tests with AspJpeg from Persits and I have created an asp page that changes the size of the image by means of a string (ej,. image.asp?width=230&file=myphoto.jpg) and for that reason I have to put the cache in the page, because I don't know if assigning a cache to a jpg via web.config will also do it to the results of this page.

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