re-includes the static cache for published property types, this cache is much more than a simple cache of content type infos, it is also the cache for associated converters which is required for all front-end rendering. Fixes the issue of not setting the xpath cache level corectly.

src/Umbraco.Core/Models/PublishedContent/PublishedContentType.cs

@@ -98,10 +98,45 @@ namespace Umbraco.Core.Models.PublishedContent
 
         #endregion
 
-        
+        #region Cache
+
+        // these methods are called by ContentTypeCacheRefresher and DataTypeCacheRefresher
+
+        internal static void ClearAll()
+        {
+            Logging.LogHelper.Debug<PublishedContentType>("Clear all.");
+            // ok and faster to do it by types, assuming noone else caches PublishedContentType instances
+            //ApplicationContext.Current.ApplicationCache.ClearStaticCacheByKeySearch("PublishedContentType_");
+            ApplicationContext.Current.ApplicationCache.StaticCache.ClearCacheObjectTypes<PublishedContentType>();
+        }
+
+        internal static void ClearContentType(int id)
+        {
+            Logging.LogHelper.Debug<PublishedContentType>("Clear content type w/id {0}.", () => id);
+            // requires a predicate because the key does not contain the ID
+            // faster than key strings comparisons anyway
+            ApplicationContext.Current.ApplicationCache.StaticCache.ClearCacheObjectTypes<PublishedContentType>(
+                (key, value) => value.Id == id);
+        }
+
+        internal static void ClearDataType(int id)
+        {
+            Logging.LogHelper.Debug<PublishedContentType>("Clear data type w/id {0}.", () => id);
+            // there is no recursion to handle here because a PublishedContentType contains *all* its
+            // properties ie both its own properties and those that were inherited (it's based upon an
+            // IContentTypeComposition) and so every PublishedContentType having a property based upon
+            // the cleared data type, be it local or inherited, will be cleared.
+            ApplicationContext.Current.ApplicationCache.StaticCache.ClearCacheObjectTypes<PublishedContentType>(
+                (key, value) => value.PropertyTypes.Any(x => x.DataTypeId == id));
+        }
+
         public static PublishedContentType Get(PublishedItemType itemType, string alias)
         {
-            var type = CreatePublishedContentType(itemType, alias);
+            var key = string.Format("PublishedContentType_{0}_{1}",
+                itemType.ToString().ToLowerInvariant(), alias.ToLowerInvariant());
+
+            var type = ApplicationContext.Current.ApplicationCache.StaticCache.GetCacheItem<PublishedContentType>(key,
+                () => CreatePublishedContentType(itemType, alias));
 
             return type;
         }
@@ -134,8 +169,21 @@ namespace Umbraco.Core.Models.PublishedContent
             return new PublishedContentType(contentType);
         }
 
-        // for unit tests
-        internal static Func<string, PublishedContentType> GetPublishedContentTypeCallback { get; set; }
-        
+        // for unit tests - changing the callback must reset the cache obviously
+        private static Func<string, PublishedContentType> _getPublishedContentTypeCallBack;
+        internal static Func<string, PublishedContentType> GetPublishedContentTypeCallback
+        {
+            get { return _getPublishedContentTypeCallBack; }
+            set
+            {
+                // see note above
+                //ClearAll();
+                ApplicationContext.Current.ApplicationCache.StaticCache.ClearCacheByKeySearch("PublishedContentType_");
+
+                _getPublishedContentTypeCallBack = value;
+            }
+        }
+
+        #endregion
     }
 }

src/Umbraco.Core/Models/PublishedContent/PublishedPropertyType.cs

@@ -230,13 +230,13 @@ namespace Umbraco.Core.Models.PublishedContent
             {
                 _sourceCacheLevel = converterMeta.GetPropertyCacheLevel(this, PropertyCacheValue.Source);
                 _objectCacheLevel = converterMeta.GetPropertyCacheLevel(this, PropertyCacheValue.Object);
-                _objectCacheLevel = converterMeta.GetPropertyCacheLevel(this, PropertyCacheValue.XPath);
+                _xpathCacheLevel = converterMeta.GetPropertyCacheLevel(this, PropertyCacheValue.XPath);
             }
             else
             {
                 _sourceCacheLevel = GetCacheLevel(_converter, PropertyCacheValue.Source);
                 _objectCacheLevel = GetCacheLevel(_converter, PropertyCacheValue.Object);
-                _objectCacheLevel = GetCacheLevel(_converter, PropertyCacheValue.XPath);
+                _xpathCacheLevel = GetCacheLevel(_converter, PropertyCacheValue.XPath);
             }
             if (_objectCacheLevel < _sourceCacheLevel) _objectCacheLevel = _sourceCacheLevel;
             if (_xpathCacheLevel < _sourceCacheLevel) _xpathCacheLevel = _sourceCacheLevel;

src/Umbraco.Web/Cache/ContentTypeCacheRefresher.cs

@@ -141,7 +141,9 @@ namespace Umbraco.Web.Cache
             ApplicationContext.Current.ApplicationCache.RuntimeCache.ClearCacheByKeySearch(CacheKeys.ContentTypeCacheKey);
             //clear static object cache
             global::umbraco.cms.businesslogic.ContentType.RemoveAllDataTypeCache();
-            
+
+            PublishedContentType.ClearAll();
+
             base.RefreshAll();
         }
 
@@ -278,7 +280,9 @@ namespace Umbraco.Web.Cache
 
             //clears the dictionary object cache of the legacy ContentType
             global::umbraco.cms.businesslogic.ContentType.RemoveFromDataTypeCache(payload.Alias);
-            
+
+            PublishedContentType.ClearContentType(payload.Id);
+
             //need to recursively clear the cache for each child content type
             foreach (var descendant in payload.DescendantPayloads)
             {

src/Umbraco.Web/Cache/DataTypeCacheRefresher.cs

@@ -108,6 +108,7 @@ namespace Umbraco.Web.Cache
                 if (dataTypeCache)
                     dataTypeCache.Result.ClearCacheByKeySearch(string.Format("{0}{1}", CacheKeys.DataTypePreValuesCacheKey, payload.Id));
                 
+                PublishedContentType.ClearDataType(payload.Id);
             });
 
             base.Refresh(jsonPayload);