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Can't stop ISA from Caching ! - 5.Jan.2008 7:53:42 PM

marvinmiller

Posts: 66
Joined: 2.Jan.2006
Status: offline

Hi Folks;

I run ISA 2004 STD and I can't for the life of me get it to stop reverse caching website content.

The only way I can get it to stop is by disabling caching altogether.

My understanding was that you enabled caching and then defined cache rules to tell ISA what it could cache and what it can't.

I must be wrong in my assumption because live logging shows that it's caching my sites.

Is the problem the default rule? It does not seem that a person can disable it. It contains this;

To: All Networks (and Local Host)
Object Size: All Objects
SSL Responses: Cache
Cache Content & Retrieval: Connect if valid object in cache, cache the response if cacheable
HTTP Caching: Disabled

Is ISA 2004's caching not quite (gasp) living up to it's design or is it supposed to be this way?

< Message edited by marvinmiller -- 5.Jan.2008 7:55:54 PM >

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RE: Can't stop ISA from Caching ! - 7.Jan.2008 4:49:46 AM

bgd_pep

Posts: 34
Joined: 8.Oct.2007
Status: offline

If you enable Caching it cache everything also reverse.
You can make no caching rules if you want

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RE: Can't stop ISA from Caching ! - 9.Jan.2008 12:02:29 AM

unleashedpsycho

Posts: 11
Joined: 15.Jun.2007
Status: offline

quote:

ORIGINAL: bgd_pep

If you enable Caching it cache everything also reverse.
You can make no caching rules if you want

Isn't there any best practice methods, so that we could control what to cache and what not to..

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RE: Can't stop ISA from Caching ! - 9.Jan.2008 12:16:43 AM

marvinmiller

Posts: 66
Joined: 2.Jan.2006
Status: offline

Hmmm.... I guess ISA's caching is not all it's cracked up to be.

Everything else in ISA seems to be very granular but it sounds like caching doesn't follow.

It almost makes me wonder why there are cache rules?

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Marvin

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RE: Can't stop ISA from Caching ! - 9.Jan.2008 7:24:19 AM

bgd_pep

Posts: 34
Joined: 8.Oct.2007
Status: offline

You can make rules to not cahe something for ex google, you don't want to cache google. So you can control it. You can make a rule not to cache your web sites.

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RE: Can't stop ISA from Caching ! - 9.Jan.2008 9:38:46 PM

marvinmiller

Posts: 66
Joined: 2.Jan.2006
Status: offline

OK, so basically you can enable global caching and you can disable caching for certain sites but you cannot do the reverse?

That gives me something to work with - thanks. Although I can't help but think it would be better to be able to enable caching only on a per site basis.

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Marvin

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RE: Can't stop ISA from Caching ! - 16.Jan.2008 3:05:17 PM

abqtech

Posts: 216
Joined: 9.Mar.2004
Status: offline

If you only want to cache a certain subset of sites, you can.

You'll need to perform the following:

Create a Domain Name Set that includes the domains you want to cache, call it My_Cache_Domain_Name_Set

Create a Cache rule thats set as follows:
General: My Cache List
To: My_Cache_Domain_Name_Set
Exceptions: Add the External Network
And then specify what you need for the remaining tabs.

If your ISA Server is also running CARP, you'll probably want to use the same reasoning to configure the CARP execptions.

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RE: Can't stop ISA from Caching ! - 16.Jan.2008 4:42:00 PM

elmajdal

Posts: 6022
Joined: 16.Sep.2004
From: Lebanese in Kuwait
Status: offline

To disable caching for specific sites, then check this : http://www.elmajdal.net/ISAServer/How_to_Disable_Caching_of_Specific_Website.aspx

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RE: Can't stop ISA from Caching ! - 22.Jan.2008 5:20:52 PM

marvinmiller

Posts: 66
Joined: 2.Jan.2006
Status: offline

Thank you elmajdal - that was an excellent article!

Couple points though - you might want to mention that a person can go back in and edit the rule to turn off HTML, FTP & SSL caching.

Way to go - that fixed my issue and I learned something new!

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Marvin

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RE: Can't stop ISA from Caching ! - 23.Jan.2008 2:59:24 PM

elmajdal

Posts: 6022
Joined: 16.Sep.2004
From: Lebanese in Kuwait
Status: offline

Hi marvinmiller,

Glad that it worked and thanks for the follow up.

I will look into it.

Thanks,
Tarek

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Tarek Majdalani

Windows Expert - IT Pro MVP
Facebook : https://www.facebook.com/ElMajdal.Net

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