Home/ Questions/Q 8900699
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-06-15T01:09:41+00:00

I have an MVC 4 (Razor) website and I’ve enabled Azure Cache (Preview) (Co-Located)

  • 0

I have an MVC 4 (Razor) website and I’ve enabled Azure Cache (Preview) (Co-Located) for both the session and the outputCache providers. Since I enabled it, each web request causes a massive CPU spike and results in 3-5 second page response times while debugging.

I have narrowed the problem down to the outputCache provider. If I disable it in the web.config, the site runs great. No CPU spikes. I am not using page output caching yet… so no reads/writes should be occurring. The session provider runs fine via Azure Cache (Preview). Below is my outputCache config. If I disable it, the site runs without CPU spikes. Any thoughts?

<caching>
  <outputCache defaultProvider="DistributedCache">
    <providers>
      <add name="DistributedCache" type="Microsoft.Web.DistributedCache.DistributedCacheOutputCacheProvider, Microsoft.Web.DistributedCache" cacheName="default" dataCacheClientName="default" />
    </providers>
  </outputCache>
</caching>
Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    It appears the issue is due to the Web Optimization Framework. It does not have server caching enabled for non-default cache providers (e.g. Azure Cache Preview). So each time a request is made, the web server has to rebundle which is causing the CPU spikes. A future version of Microsoft.AspNet.Web.Optimization should enable server caching again.

    Here’s the issue on on CodePlex.

    • 0