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What will happen if I stop the Distributed Cache Service from Central Administration on my SP2013 server ?

Will I really get better performance ? Improve navigation speed ? As I'm talking about production environment, I would like to know every side effects before doing it. I couldn't find it on google.

By the way, enabling BLOB cache is a good idea ? does it take much disk space ? and does it really improve performances ? I mean : is that worth it ? (Remind still talking about production env.)

I tried on my test lab, I didn't get any improvements, but I only have 1 site with 1 library.

Thanks.

  • I had to stop Distributed cache once because my custom webparts were failing to work. Viewstate was showing very odd behaviour and server controls like Wizard were not functioning properly. Disabling the distributed cache worked perfectly but I couldn't figure out what was the reason. Do you get similar behaviour? – sethidev Dec 31 '14 at 11:00
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I wouldn't stop it, many functionalities depend on it.

"The Distributed Cache service is either required by or improves performance of the following features:

  • Authentication
  • Newsfeeds
  • OneNote client access
  • Security Trimming
  • Page performance" (source)

For blob cache, I'd definitely enable it. Not only does it take strain off the SQL server, but it also modifies the HTTP headers so that browsers don't need to even come to server to verify if specific files (images/javascripts, and others in blobcache) have been renewed. Please review this for details how you can even see it happen in Fiddler. Article discusses it from anonymous user perspective, so you might just want to skip the rest of the article where that is discussed.

  • Thanks for answering. I can't find any informations on where does this cache is stored, only on the SP Server (from the web.config) ? so I have to prepare another disk (because I didn't read anything about the disk space usage of such a feature). Good article though ! :) – Nico Dec 31 '14 at 10:18
  • Ok, its a french article, but I got some info on disk/ram usage : we can configure blob cache to use only a amount of disk space (and this can be under 1GB), and blob cache use 800B of RAM per file. (blog.bliz.fr/…) – Nico Dec 31 '14 at 10:33

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