Sitecore locked items list is slow

Tags sitecore, performance, upgrade

After upgrading to Sitecore 9. We were experiencing poor performance while using the locked items list. Luckily the problem was easily fixed. Here are a few pointer to what were done to optimize performance for this module. First of all we disabled the counter for users number of locked items i the Experience Editor.

This is done with a configuration file like this

  <configuration xmlns:patch=“http://www.sitecore.net/xmlconfig/">
    <sitecore>
      <settings>
        <setting name=“WebEdit.ShowNumberOfLockedItemsOnButton”>
          <patch:attribute name=“value”>false</patch:attribute>
        </setting>
      </settings>
    </sitecore>
  </configuration>

Well this does not quite does the job. When using the functionality the rendering of the list is still slow. This can be fixed with this guide Solution 4 is your friend here. :)

Thanks to my dear colleague Daniel for tracking this one down.