Hi! We are running a multi site, i.e. one Umbraco Instance to Host Multiple Sites/domains (one language).

Problem is that some content, like menus and loggo are randomly being displayed using another node/site's content. This happens only sometimes and cant find a way to reproduce on local environment or production.

A guess is that either code like this get wrong value: Home = currentPage.AncestorOrSelf(1) as Home or currentPage is from the wrong site node.

This seem to be most frequent, but not only on that page, on a page where there is a custom IContentFinder to find the relevant page:

public class NotFoundContentFinder : IContentFinder
{
    private string _domainRoutePrefixId;

    public bool TryFindContent(PublishedContentRequest contentRequest)
    {
        var uri = contentRequest.Uri.GetAbsolutePathDecoded();

        var ds = ApplicationContext.Current.Services.DomainService;
        var domains = ds.GetAll(true) as IList<IDomain> ?? ds.GetAll(true).ToList();
        _domainRoutePrefixId = String.Empty;
        if (domains.Any())
        {

            IDomain domain = null;
            foreach (IDomain currentDomain in domains)
            {
                if (currentDomain.DomainName.ToLower().StartsWith("http") && contentRequest.Uri.AbsoluteUri.ToLower().StartsWith(currentDomain.DomainName.ToLower()))
                {
                    domain = currentDomain;
                    break;
                }
                else if ((contentRequest.Uri.Authority.ToLower() + contentRequest.Uri.AbsolutePath.ToLower()).StartsWith(currentDomain.DomainName.ToLower()))
                {
                    domain = currentDomain;
                    break;
                }
            }

            if (domain != null)
            {

                _domainRoutePrefixId = domain.RootContentId.ToString();
            }
        }

        //closestContent not used in code later
        var closestContent = UmbracoContext.Current.ContentCache.GetByRoute(_domainRoutePrefixId + uri.ToString(), false);
        while (closestContent == null)
        {
            uri = uri.Remove(uri.Length - 1, 1);
            closestContent = UmbracoContext.Current.ContentCache.GetByRoute(_domainRoutePrefixId + uri.ToString(), false);
        }


        var productPage = GetProductPage(closestContent.Id);
        if (productPage != null)
        {
            contentRequest.PublishedContent = productPage;
            return true;
        }

        //  removed some code for brewity


        return true;
    }

    private IPublishedContent GetProductPage(int id)
    {
        //yeah I know, id not used here
        var home = GetHomePage();
        if (home != null)
        {
            var pp = home.ProductPage;
            if (pp != null)
                return pp;
        }

        return null;
    }


    private Home GetHomePage()
    {
        //is this returning wrong node sometimes?
        var home = UmbracoContext.Current.ContentCache.GetByRoute(_domainRoutePrefixId + "/", false) as Home;
        return home;
    }
}

public class ContentFinderStartUp : ApplicationEventHandler
{
    protected override void ApplicationStarting(UmbracoApplicationBase umbracoApplication, ApplicationContext applicationContext)
    {
        ContentFinderResolver.Current.InsertTypeBefore<ContentFinderByNotFoundHandlers, NotFoundContentFinder>();
    }
}

Running on Azure

Umbraco version 7.8.1

web.config settings:

key="umbracoConfigurationStatus" value="7.8.1" key="umbracoHideTopLevelNodeFromPath" value="true" key="umbracoUseDirectoryUrls" value="true" key="umbracoTimeOutInMinutes" value="20" key="umbracoDefaultUILanguage" value="en-US" key="umbracoUseSSL" value="true"

umbraco.config settings:

useDomainPrefixes =true addTrailingSlash=true urlReplacing toAscii="true"

trySkipIisCustomErrors="true" internalRedirectPreservesTemplate="false" disableAlternativeTemplates="false" disableFindContentByIdPath="false" umbracoApplicationUrl="" disableRedirectUrlTracking="true"