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12/8/2011 4:39 PM
 
cathal connolly


cathal connolly's Avatar

www.cathal.co.uk
Joined: 4/9/2003
Posts: 9676
there is an updated version (that includes details for the webbased request caching provider in the pro/enterprise editions as well) - I've sent a request to have it uploaded to a public location
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12/12/2011 1:43 PM
 
cathal connolly


cathal connolly's Avatar

www.cathal.co.uk
Joined: 4/9/2003
Posts: 9676
the updated document has now been upload to the relevant folder (direct link: http://www.dotnetnuke.com/Portals/25/Documents/DotNetNuke_Web_Farm_Support-2011.PDF )
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12/13/2011 4:33 PM
 
Geoff Bishop


Joined: 11/22/2011
Posts: 5
http://www.dotnetnuke.com/Portals/25/Documents/DotNetNuke_Web_Farm_Support-2011.PDF

First off, this document is EXCELLENT. It well-written and comprehensive but very much on topic. Thank you!

There do seem to be some omissions however:

A. - Page 2, bullet point 5, states that the File Server is "Optional". How would it be optional, please? Would it only be optional if I don't plan on allowing any file uploads to my DNN site?

B. - Page 3, paragraph 3, states that there are two options for hosting the application files; locally, or via a UNC share. OK. If I use a single UNC share, then obviously there is only 1 set of files, so I don't need to worry about keeping files in sync, or worry about how web server 2 will serve up a file which was only uploaded to web server 1. But what if I do NOT use a UNC share? I don't see any instructions on what else to do in that case. Would I need some sort of 3rd party file synchronization tool then?

C. - Page 16, paragraphs 2 and 3 mention that the WebRequestCachingProvider (Pro only) is superior to the FileBasedCachingProvider. OK. But my understanding is that Web Farms ARE SUPPORTED in the community edition of DNN. So where are the instructions for configuring the FileBasedCachingProvider? (I see in Appendix A, the Jan 15, 2010 note, that the FileBasedCachingProvider section was "Replaced" with the WebRequestCachingProvider. Why have those instructions been removed if the FileBasedCachingProvider still functions, and it is the ONLY option available to community users?)

Thanks again.
 
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12/14/2011 3:19 AM
 
cathal connolly


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www.cathal.co.uk
Joined: 4/9/2003
Posts: 9676

Please note the document was the one given to PE/EE customers so some of it makes those assumptions, which is why it may not be 100% clear.

As to your questions

A. the caching providers only handle syncronising the cache - users still have to ensure the files are in sync (if the files change - obviously if none do then do sync is required). The easiest way to do this is with a shared filesystem e.g. a SAN/fileserver - however this is optional and instead users may choose to syncronise the files e.g. via DFS/robocopy

B.yes, you would need to syncronise the files manually e.g. via dfs/robocopy

C.CE supports webfarms but only comes with the filebased caching provider (it also used to have the database based one but that was deprecated as it had seriour scaling issues) - there is no real setup for filebased as it uses the file system to invalidate cache (and if you're set up with a UNC path will "just work") . i hadnt realised they had removed the file based provider details -ill have to get the "old" document put back (unfortunately I cant just edit the new one and merge it - this is why i hate downloadable pdf's and much prefer a wiki)

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12/15/2011 5:47 AM
 
Jean-Sylvain Boige


dotnetnuke.aricie.com
Joined: 5/27/2004
Posts: 151

Hi,

 You may alternatively give a try at our Ditributed Caching Provider, which comes with connectors to distributed caching technologies such as AppFabric or Memcached.  It performs cache synchronization and cached objects distribution through powerful caching strategies.

Cheers

Jesse
CTO - Aricie
 
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