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We are running Windows 2003, IIS 6 and ASP 2.0.50727. I am not very familiar with IIS/ASP caching. We have an application that makes the same requests over and over. (static content as well as dynamic asp requests) From what I have seen the only way to use caching with ASP is to do it at the code level. Is this true? I am not a developer but work on the systems side.

Do you recommend setting Expire HTTP Headers at the IIS level? If I set it to 1 day will this only cache static content for 1 day or also dynamic asp data? I know this caches it at the clients browser. Is there a way to cache these images on the IIS server side? It stores the files in memory?

Thanks

roacha
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  • Expires controls caching on the users end, not the server side. Rick has a good start for controlling it. – Doozer Blake Oct 26 '11 at 01:45
  • Take a look at this answer, this is, IMO, the best way to do caching on IIS, specially for images, js files, css files, etc: http://stackoverflow.com/questions/7541032/caching-specific-javascript-and-css-files/7542816#7542816 – Icarus Oct 26 '11 at 01:46
  • Thanks for the link, unfortunately I am running IIS 6 so I don't have the "Output Caching" option in IIS. I have read about Kernal caching with IIS 6 but not sure if its the same or not. – roacha Oct 26 '11 at 02:37
  • Icarus, this setting is in IIS correct? When I right click on my Images folder I don't see Output caching as an option anywhere. Its not under properties and it doesn't have the new panel with all the options that include Output caching. Can you give me more details on where exactly I would see this option in IIS 6? Based on a few links I found this feature was started with IIS7. – roacha Oct 26 '11 at 11:46

1 Answers1

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You can control overall caching in the web.config:

Cache Configuration in ASP.NET

rick schott
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  • Thanks for the link Rick. Quick question, I don't see anything like: section in my web.config or machine.config. Do you have to add this? I only see: . And is this essentially setting a 60 second server-side cache for all static file requests? How about dynamic asp requests? – roacha Oct 26 '11 at 02:41
  • We essentially have an ASP application that serves up lots of static pages (images,css,js,etc) and then also makes an asp request to a web service and waits for the response. Each asp request will be dynamic as its a different user in which data will be provided for. – roacha Oct 26 '11 at 02:48
  • you have to add it. webconfigs start at the most basic and the rest is assumed to be default. As you change things in IIS you will notice it adds/changes things in the webconfig. You can add things to the webconfig to specify alternate settings. – FlavorScape Apr 20 '12 at 22:09