Comments for SharePoint Interface

Comment on Client-Server Interactions and the max-age Attribute with SharePoint BLOB Caching by SharePoint 2010 Cache Configuration « myspworld

SharePoint 2010 Cache Configuration « myspworld — Wed, 09 May 2012 18:27:44 +0000

[...] Deeper into the 2010 Caching Options: Part 1 Digging Deeper into the 2010 Caching Options: Part 2 Client-Server Interactions and the max-age Attribute with SharePoint BLOB Caching BLOB Cache, HTTP 304 Results and [...]

Comment on DPM, RPC, and DCOM with Forefront TMG 2010 by Troubleshooting DPM Agent Issues - Universal Systems Solutions

Troubleshooting DPM Agent Issues - Universal Systems Solutions — Thu, 26 Apr 2012 16:01:36 +0000

[...] Article on DPM Across TMG / WAN [...]

Comment on Do You Know What’s Going to Happen When You Enable the SharePoint BLOB Cache? by Performance Optimising SharePoint Sites – Part 3 « SPMatt

Performance Optimising SharePoint Sites – Part 3 « SPMatt — Wed, 04 Apr 2012 15:29:35 +0000

[...] site. For more information on BLOB caching i’d recommend reading Sean McDonough’s Do You Know What’s Going to Happen When You Enable the SharePoint BLOB Cache? – it’s a long but quality post. For Output Caching (and caching in general) have a read [...]

Comment on Do You Know What’s Going to Happen When You Enable the SharePoint BLOB Cache? by Sean McDonough

Sean McDonough — Tue, 03 Apr 2012 13:49:19 +0000

Thanks for the link, Lionel. I agree: Keith made an incredible discovery and did a fantastic job of documenting the situation, reproduction steps, etc. He actually looped me into the process while he was working through it; frankly, it was more fun than I’d had in a long time to be combing through the PublishingHttpModule with Reflector :-)

Comment on Do You Know What’s Going to Happen When You Enable the SharePoint BLOB Cache? by Lionel

Lionel — Tue, 03 Apr 2012 08:15:56 +0000

Hey
I’m come back with maybe a useful info about BlobCache, Anonymous access and Item Level security. It’s a very particular case but to keep in mind : http://blog.krichie.com/2012/04/02/sharepoint-item-level-security-means-nothing-to-the-blob-cache-with-anonymous-access/

Comment on Do You Know What’s Going to Happen When You Enable the SharePoint BLOB Cache? by SharePoint Item Level Security means nothing to the BLOB Cache with anonymous access « Keith Richie

Mon, 02 Apr 2012 16:20:54 +0000

[...] If you want to read a good article on using the BLOB Cache in your sharepoint environment, check out Seans’ post here: http://sharepointinterface.com/2012/03/12/do-you-know-whats-going-to-happen-when-you-enable-the-shar… [...]

Comment on SharePoint, WebDAV, and a Case of the 405 Status Codes by Sandip (@sandipsk)

Sandip (@sandipsk) — Sat, 31 Mar 2012 10:27:33 +0000

Thanks, It was very helpful to us ,
fixed issue related to third party application integration with Microsoft sharepoint SharePoint .

Comment on Do You Know What’s Going to Happen When You Enable the SharePoint BLOB Cache? by kazimo

kazimo — Tue, 27 Mar 2012 04:32:07 +0000

Thanks a lot for the reply, I will check at proxy server, appreciate your help.

Comment on Do You Know What’s Going to Happen When You Enable the SharePoint BLOB Cache? by Sean McDonough

Sean McDonough — Thu, 22 Mar 2012 12:47:02 +0000

Kazimo,

That’s certainly an odd combination of cache control directives. The “public, max-age=86400″ portion is exactly what I would expect given the settings you’ve specified. The “No-cache” portion, on the other hand, instructs the client to revalidate each use of the item with a callback to the server. The settings are effectively mutually exclusive (http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.9.1)

You indicated that the BLOB Cache is properly configured, so in this case I’d probably start looking at any network hardware, proxy servers, or other devices that are “in play” between your WFEs and your client browsers. It’s not uncommon for such devices to alter Cache-Control directives to control browser request patterns, and that may be happening here; e.g., a device in-between may simply be adding the “No-cache” directive on its own to ensure that every request for the item in question revalidates back to the source.

One other thing to consider is that IIS can be instructed to add additional headers to responses it serves. Double-check IIS to ensure that you (or someone else) isn’t inadvertantly altering the Cache-Control header.

Good luck!

Comment on Do You Know What’s Going to Happen When You Enable the SharePoint BLOB Cache? by Check Your BLOB Cache Lately? : Beyond Search

Check Your BLOB Cache Lately? : Beyond Search — Thu, 22 Mar 2012 11:00:21 +0000

[...] “The SharePoint BLOB Cache is a powerful mechanism to improve farm performance and scalability, but it shouldn’t be turned on without some forethought and a couple of changes to the default BLOB cache element attribute values,” McDonough writes in his post Do You Know What’s Going to Happen When You Enable the SharePoint BLOB Cache?. [...]