Products

Evoq Content Overview Content Creation Workflow Asset Management Mobile Responsive Personalization Content Analytics SEO Integrations Security Website PerformanceEvoq Engage Overview Community Management  Dashboard  Analytics  Member Profile Gamification Advocate Marketing Community Engagement  Ideas  Answers  Discussions  Groups  Wikis  Events Mobile ReadyDNN Support PackagesEvoq: CMS FeaturesEvoq OnDemandCompare DNN's CMS Products

Solutions

Content Management SystemMulti-Channel PublishingDigital MarketingOnline Community ManagementIntranet Software SolutionOur CustomersPrime

Resources

Test DrivesSchedule A DemoDocumentation CenterWebinarsWhite PapersProduct ManualsRequest PricingData SheetsCase StudiesEvoq Preferred Products Content Management Ecommerce Forms Identity Management and Authentication Site Management Social Themes

Partners

DNN Partners Partner Directory Become a DNN Partner Partner Program Overview  Hosting  Implementation  ISV  Training  Competencies

Community

Participate Ask a Question Forums Community Showcase DNN MVP  Program Overview  Lifetime MVPs  Honorary MVPs Subscribe to DNN Digest Advisory Groups  Awareness Advisory Group  Developer Advisory Group  Partner Advisory Group  Technology Advisory GroupLearn Documentation Wiki Community Blog Video Library Project History Development RoadmapDownload DNN Store Language Packs Manuals Nightly BuildsSecurity Policies Security Center

Blog

About

News Press Releases News Coverage Press KitCareersContact DNN

QA

Ideas Test

New Community Website

Ordinarily, you'd be at the right spot, but we've recently launched a brand new community website... For the community, by the community.

Yay... Take Me to the Community!

Welcome to the DNN Community Forums, your preferred source of online community support for all things related to DNN.
In order to participate you must be a registered DNNizen
HomeHomeGetting StartedGetting StartedInstalling DNN ...Installing DNN ...DNN 4.4.1 Caching Issue on a Web FarmDNN 4.4.1 Caching Issue on a Web Farm
Previous
 
Next
New Post
2/24/2007 11:33 AM
 
David Felker

Joined: 1/27/2006
Posts: 13

Our company has a web farm that includes three front end web servers, a file server, and a database server.  The three front end web servers access the web files placed on a UNC share on the file server.  Everything is working okay but our customers notified me of a random error that is occurring and I noticed the following error popping up in the event log:

System.IO.IOException: The process cannot access the file '\\server\site\Portals\_default\Cache\VGFiUGVybWlzc2lvbnMtMQ==.resources' because it is being used by another process.

I confirmed that all settings are configured correctly based on the Web Farm support documentation.  We are using DNN 4.4.1 and (I think) that this error did not show up until we upgraded our sites to 4.4.1.  Anybody have any ideas on what is going on and how to correct this as it is starting to annoy our users.

Any help is appreciated...

 
 
New Post
2/26/2007 1:21 AM
 
Oren Vandersteen

Joined: 9/23/2003
Posts: 9
We are having exactly the same problems that you are seeing, and it is causing us some serious issues. It occurs in both 4.4.0 and 4.4.1, and also occurs when you try and set up a web garden, not just a web farm.

I am surprised that this issue has arisen given that DNN core team said that this release was a performance release, given that is very obvious when you put 4.4.0 or 4.4.1 under load though load testing software.

Our website has anywhere from 600 to 900+ users on it at one time during business hours, and our inability to go to a web farm, or even a web garden is a big problem for us in terms of our ability to meet the needs of our customers.

It appears that the error occurring is proportional to the load the site is under, and for us, unfortunately the error occurs way to frequently for us to even consider going to a web garden or web farm until this issue is resolved.

Sorry we can't be of any help, but if anyone else has a workaround knowing about it would be very appreciated!!
 
New Post
3/2/2007 10:45 PM
 
David Felker

Joined: 1/27/2006
Posts: 13

Are there any other companies running their DNN portals in a web farm?  I would really like to get some feedback from anyone else who is running the web farm with 4.4.1.  The issue above is occuring on all of our portals (15) that have been upgraded to 4.4.1.  I did confirm that this error did not occur under 4.3.6 by going back and looking at the logs.  It seems the greater the load on the servers, the more often the error occurs.  If I turn off caching, the error does not occur.  If I change the caching to memory instead of file based, the error does not occur.  So clearly this has something to do with the .resource files under the _default/cache folder being locked by a worker process on one server and attempted to be written to or deleted by another server (or worker process).  Any help would be appreciated in helping us get to the bottom of this.
 
New Post
3/3/2007 5:27 AM
 
Chris Smith


www.nddllc.com
Joined: 1/25/2003
Posts: 681
We experienced the same problems in earlier builds of DNN. This was one of the minor factors in not deploying in the DNN recommended architecture. The main reason being this method creates a single point of failure, should the DFS or storage devise become unavailable...the site is down.

The method we choose was to use the local storage on all web heads and use a file replication software (PeerSync) in real-time to ensure all local file directories are identical at all times. As well the DB's are (transaction) replicated between SQL servers to eliminate this as a single source of failure.

Perhaps this is a method for you to explore.

 
New Post
5/12/2011 5:12 AM
 
Olin


Joined: 11/22/2010
Posts: 16
Hi

Does this problem still occur in 05.05.01 ?


thanks !
 
 Page 1 of 2
12Next 
Previous
 
Next
HomeHomeGetting StartedGetting StartedInstalling DNN ...Installing DNN ...DNN 4.4.1 Caching Issue on a Web FarmDNN 4.4.1 Caching Issue on a Web Farm


These Forums are dedicated to discussion of DNN Platform and Evoq Solutions.

For the benefit of the community and to protect the integrity of the ecosystem, please observe the following posting guidelines:

  1. No Advertising. This includes promotion of commercial and non-commercial products or services which are not directly related to DNN.
  2. No vendor trolling / poaching. If someone posts about a vendor issue, allow the vendor or other customers to respond. Any post that looks like trolling / poaching will be removed.
  3. Discussion or promotion of DNN Platform product releases under a different brand name are strictly prohibited.
  4. No Flaming or Trolling.
  5. No Profanity, Racism, or Prejudice.
  6. Site Moderators have the final word on approving / removing a thread or post or comment.
  7. English language posting only, please.
What is Liquid Content?
Find Out
What is Liquid Content?
Find Out
What is Liquid Content?
Find Out