Hi,

It's better to hook in to the cache refresher events. This is also the only way it will ever work on a load balancend environment.

/// <summary>
/// The boot manager.
/// </summary>
public class BootManager : ApplicationEventHandler
{
    protected override void ApplicationStarting(UmbracoApplicationBase umbracoApplication, ApplicationContext applicationContext)
    {
        // hook into core cacherefresher to make sure cache get's cleared correctly when in load balanced environment
        PageCacheRefresher.CacheUpdated += (sender, args) => this.ClearCache();            
        MediaCacheRefresher.CacheUpdated += (sender, args) => this.ClearCache();
        DictionaryCacheRefresher.CacheUpdated += (sender, args) => this.ClearCache();

        base.ApplicationStarting(umbracoApplication, applicationContext);            
    }

    /// <summary>
    /// Clears the runtime cache on all servers
    /// </summary>
    private void ClearCache()
    {            
        OutputCacheManager manager = new OutputCacheManager();
        manager.RemoveItems();
    }
}

Dave

Thanks Dave. This does not clear cache for me and my custom section still does not show still in backend. I followed this example to create custom section.

Turns out that tree.config was not being generated properly and that is why custom tree was not showing up. Is this supposed to be auto-generated by Umbraco or explicitly defined by user?

is working on a reply...