Learning Cache Control

Update 3/26/2010 6:50 p.m.

• The cache-control had been set to private by the host (thank you to http://www.seoconsultants.com/tools/headers for the great tool that I've been using for a few years now)
• I added <% Response.CacheControl="public" %> to change it to public
• Then I added <% Response.ExpiresAbsolute="5/31/2010" %>
• According to the header check
• #1 Server Response: http://www.uticahousekeeping.com/
  HTTP Status Code: HTTP/1.1 200 OK
  Cache-Control: public
  Date: Fri, 26 Mar 2010 22:45:38 GMT
  Content-Length: 3028
  Content-Type: text/html
  Expires: Mon, 31 May 2010 05:00:00 GMT
  Server: Microsoft-IIS/6.0
  X-Powered-By: ASP.NET
  MicrosoftOfficeWebServer: 5.0_Pub
  Set-Cookie: ASPSESSIONIDQCBDBCQQ=GFGHLLJCGKPEPJHJEJFBPNBG; path=/

But Google's PageSpeed tool still says:
The following resources are missing a cache expiration. Resources that do not specify an expiration may not be cached by browsers. Specify an expiration at least one month in the future for resources that should be cached, and an expiration in the past for resources that should not be cached:

• http://www.uticahousekeeping.com/images/button.gif
• http://www.uticahousekeeping.com/images/foot.gif
• http://www.uticahousekeeping.com/images/footer_bckg.jpg
• http://www.uticahousekeeping.com/images/header_bckg.jpg
• http://www.uticahousekeeping.com/images/home_button.png
• http://www.uticahousekeeping.com/images/home_button2.png
• http://www.uticahousekeeping.com/images/menu_bckg.jpg
• http://www.uticahousekeeping.com/style.css

The following cacheable resources have a short freshness lifetime. Specify an expiration at least one month in the future for the following resources:

• http://www.google-analytics.com/ga.js

Non-scoring information
The following resources are explicitly non-cacheable. Consider making them cacheable if possible:

• http://www.google-analytics.com/__utm.gif?utmwv=4.6.5&utmn=73339721&utmhn=www.uticahousekeep

So what am I missing? How do I fix this? Can anybody help me?

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According to Google's PageSpeed tool:
The following resources are missing a cache expiration. Resources that do not specify an expiration may not be cached by browsers. Specify an expiration at least one month in the future for resources that should be cached, and an expiration in the past for resources that should not be cached:

• http://www.uticahousekeeping.com/images/button.gif
• http://www.uticahousekeeping.com/images/button_over.gif
• http://www.uticahousekeeping.com/images/foot.gif
• http://www.uticahousekeeping.com/images/footer_bckg.jpg
• http://www.uticahousekeeping.com/images/header_bckg.jpg
• http://www.uticahousekeeping.com/images/kitchen.png
• http://www.uticahousekeeping.com/images/li.gif
• http://www.uticahousekeeping.com/images/menu_bckg.jpg
• http://www.uticahousekeeping.com/style.css

The following cacheable resources have a short freshness lifetime. Specify an expiration at least one month in the future for the following resources:

• http://www.google-analytics.com/ga.js

Non-scoring information
The following resources are explicitly non-cacheable. Consider making them cacheable if possible:

• http://www.google-analytics.com/__utm.gif?utmwv=4.6.5&utmn=1479324700&utmhn=www.uticahouseke...
• http://www.uticahousekeeping.com/images/c.gif

So, I've searched and searched and found the following tutorials:

• http://www.web-caching.com/mnot_tutorial/how.html
• http://www.web-caching.com/mnot_tutorial/notes.html
• http://www.mnot.net/cache_docs/#IMP-SERVER
• http://developer.yahoo.com/performance/rules.html#expires
• http://www.codeave.com/html/code.asp?u_log=5080
• http://www.lansa.com/support/tips/t0235.htm

 

Using <% Response.CacheControl="public" %> didn't change the error in PageSpeed

Using <% Response.ExpiresAbsolute=#May 31,1996 13:30:15 GMT# %> caused an ASP error so the page wouldn't show up at all
Using <% Response.Expires=1440 %> didn't change the error in PageSpeed

 

When I contacted my website hosting company, IXWebHosting, their response was:

You are not able to change this value on a shared hosting environment.

 

Not the answer I was looking for...

 

Can anybody help??