Disk-based cache flushing (SharePoint Server 2010)


Si applica a: SharePoint Foundation 2010, SharePoint Server 2010

Ultima modifica dell'argomento: 2010-06-24

Alert Name:   Disk-based cache flushing

Event ID:   None

Summary:   To save time accessing frequently used static files, Microsoft SharePoint Server 2010 uses the disk-based cache to store these files on the disk of the front-end Web server instead of accessing these files directly from the database server. Farm administrators can configure settings for the cache by modifying the Web.config file on each front-end Web server.

This alert indicates that a user or administrator has made a change that caused some of the disk-based cache contents to become invalid. This will initiate the process of cache flushing, which is removing a large set of items from the cache. Flushing is a resource-intensive process that can affect the performance of the front-end Web server. When the flushing process is finished, the performance of the front-end Web server will return to normal.


If you want to reduce the frequency of the flushing processes, you can perform one or more of the resolutions in this article. You can also ensure that users or administrators are not making changes that might invoke a cache flush process during peak usage hours.

Symptoms:   The Blob cache flushes / second performance counter threshold has been exceeded.

Cause:   A user or administrator made a change that caused the cached contents to become invalid. Examples include modifying content types of cached items, updated the schema of lists, or changing permissions on a list or library.

Resolution:   Change the file types to be stored by the disk-based cache

  1. For information about how to configure the Web.config file, see Configurare le impostazioni della cache per un'applicazione Web (SharePoint Server 2010)