diff --git a/src/Umbraco.Core/Cache/AppCacheExtensions.cs b/src/Umbraco.Abstractions/Cache/AppCacheExtensions.cs
similarity index 88%
rename from src/Umbraco.Core/Cache/AppCacheExtensions.cs
rename to src/Umbraco.Abstractions/Cache/AppCacheExtensions.cs
index a4edf6479e..cbefb5d5c0 100644
--- a/src/Umbraco.Core/Cache/AppCacheExtensions.cs
+++ b/src/Umbraco.Abstractions/Cache/AppCacheExtensions.cs
@@ -1,7 +1,6 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
-using System.Web.Caching;
 
 namespace Umbraco.Core.Cache
 {
@@ -15,8 +14,6 @@ namespace Umbraco.Core.Cache
             Func<T> getCacheItem,
             TimeSpan? timeout,
             bool isSliding = false,
-            CacheItemPriority priority = CacheItemPriority.Normal,
-            CacheItemRemovedCallback removedCallback = null,
             string[] dependentFiles = null)
         {
             var result = provider.Get(cacheKey, () => getCacheItem(), timeout, isSliding, dependentFiles);
@@ -28,8 +25,6 @@ namespace Umbraco.Core.Cache
             Func<T> getCacheItem,
             TimeSpan? timeout = null,
             bool isSliding = false,
-            CacheItemPriority priority = CacheItemPriority.Normal,
-            CacheItemRemovedCallback removedCallback = null,
             string[] dependentFiles = null)
         {
             provider.Insert(cacheKey, () => getCacheItem(), timeout, isSliding, dependentFiles);
diff --git a/src/Umbraco.Core/Cache/AppPolicedCacheDictionary.cs b/src/Umbraco.Abstractions/Cache/AppPolicedCacheDictionary.cs
similarity index 87%
rename from src/Umbraco.Core/Cache/AppPolicedCacheDictionary.cs
rename to src/Umbraco.Abstractions/Cache/AppPolicedCacheDictionary.cs
index 5c60dededa..fa13ebf088 100644
--- a/src/Umbraco.Core/Cache/AppPolicedCacheDictionary.cs
+++ b/src/Umbraco.Abstractions/Cache/AppPolicedCacheDictionary.cs
@@ -17,24 +17,24 @@ namespace Umbraco.Core.Cache
         /// <param name="cacheFactory"></param>
         protected AppPolicedCacheDictionary(Func<TKey, IAppPolicyCache> cacheFactory)
         {
-            CacheFactory = cacheFactory;
+            _cacheFactory = cacheFactory;
         }
 
         /// <summary>
         /// Gets the internal cache factory, for tests only!
         /// </summary>
-        internal readonly Func<TKey, IAppPolicyCache> CacheFactory;
+        private readonly Func<TKey, IAppPolicyCache> _cacheFactory;
 
         /// <summary>
         /// Gets or creates a cache.
         /// </summary>
         public IAppPolicyCache GetOrCreate(TKey key)
-            => _caches.GetOrAdd(key, k => CacheFactory(k));
+            => _caches.GetOrAdd(key, k => _cacheFactory(k));
 
         /// <summary>
         /// Tries to get a cache.
         /// </summary>
-        public Attempt<IAppPolicyCache> Get(TKey key)
+        protected Attempt<IAppPolicyCache> Get(TKey key)
             => _caches.TryGetValue(key, out var cache) ? Attempt.Succeed(cache) : Attempt.Fail<IAppPolicyCache>();
 
         /// <summary>
@@ -56,7 +56,7 @@ namespace Umbraco.Core.Cache
         /// <summary>
         /// Clears a cache.
         /// </summary>
-        public void ClearCache(TKey key)
+        protected void ClearCache(TKey key)
         {
             if (_caches.TryGetValue(key, out var cache))
                 cache.Clear();
@@ -71,4 +71,4 @@ namespace Umbraco.Core.Cache
                 cache.Clear();
         }
     }
-}
\ No newline at end of file
+}
diff --git a/src/Umbraco.Abstractions/Cache/IRepositoryCachePolicy.cs b/src/Umbraco.Abstractions/Cache/IRepositoryCachePolicy.cs
index 020f4f7dd9..a31e715383 100644
--- a/src/Umbraco.Abstractions/Cache/IRepositoryCachePolicy.cs
+++ b/src/Umbraco.Abstractions/Cache/IRepositoryCachePolicy.cs
@@ -5,7 +5,7 @@ using Umbraco.Core.Scoping;
 
 namespace Umbraco.Core.Cache
 {
-    internal interface IRepositoryCachePolicy<TEntity, TId>
+    public interface IRepositoryCachePolicy<TEntity, TId>
         where TEntity : class, IEntity
     {
         /// <summary>
diff --git a/src/Umbraco.Core/Cache/IsolatedCaches.cs b/src/Umbraco.Abstractions/Cache/IsolatedCaches.cs
similarity index 100%
rename from src/Umbraco.Core/Cache/IsolatedCaches.cs
rename to src/Umbraco.Abstractions/Cache/IsolatedCaches.cs
diff --git a/src/Umbraco.Core/Cache/NoAppCache.cs b/src/Umbraco.Abstractions/Cache/NoAppCache.cs
similarity index 100%
rename from src/Umbraco.Core/Cache/NoAppCache.cs
rename to src/Umbraco.Abstractions/Cache/NoAppCache.cs
diff --git a/src/Umbraco.Core/Cache/NoCacheRepositoryCachePolicy.cs b/src/Umbraco.Abstractions/Cache/NoCacheRepositoryCachePolicy.cs
similarity index 93%
rename from src/Umbraco.Core/Cache/NoCacheRepositoryCachePolicy.cs
rename to src/Umbraco.Abstractions/Cache/NoCacheRepositoryCachePolicy.cs
index fecab66d84..20b57c49ff 100644
--- a/src/Umbraco.Core/Cache/NoCacheRepositoryCachePolicy.cs
+++ b/src/Umbraco.Abstractions/Cache/NoCacheRepositoryCachePolicy.cs
@@ -5,7 +5,7 @@ using Umbraco.Core.Models.Entities;
 
 namespace Umbraco.Core.Cache
 {
-    internal class NoCacheRepositoryCachePolicy<TEntity, TId> : IRepositoryCachePolicy<TEntity, TId>
+    public class NoCacheRepositoryCachePolicy<TEntity, TId> : IRepositoryCachePolicy<TEntity, TId>
         where TEntity : class, IEntity
     {
         private NoCacheRepositoryCachePolicy() { }
diff --git a/src/Umbraco.Core/Umbraco.Core.csproj b/src/Umbraco.Core/Umbraco.Core.csproj
index 34fd5349ee..644d30d38e 100755
--- a/src/Umbraco.Core/Umbraco.Core.csproj
+++ b/src/Umbraco.Core/Umbraco.Core.csproj
@@ -124,10 +124,8 @@
       <DependentUpon>Constants.cs</DependentUpon>
     </Compile>
     -->
-    <Compile Include="Cache\AppPolicedCacheDictionary.cs" />
     <Compile Include="Compose\AuditEventsComponent.cs" />
     <Compile Include="Cache\AppCaches.cs" />
-    <Compile Include="Cache\AppCacheExtensions.cs" />
     <Compile Include="Cache\CacheRefresherBase.cs" />
     <Compile Include="Cache\CacheRefresherCollection.cs" />
     <Compile Include="Cache\CacheRefresherCollectionBuilder.cs" />
@@ -139,10 +137,7 @@
     <Compile Include="Cache\FullDataSetRepositoryCachePolicy.cs" />
     <Compile Include="Cache\HttpRequestAppCache.cs" />
     <Compile Include="Cache\WebCachingAppCache.cs" />
-    <Compile Include="Cache\IsolatedCaches.cs" />
     <Compile Include="Cache\JsonCacheRefresherBase.cs" />
-    <Compile Include="Cache\NoCacheRepositoryCachePolicy.cs" />
-    <Compile Include="Cache\NoAppCache.cs" />
     <Compile Include="Cache\ObjectCacheAppCache.cs" />
     <Compile Include="Cache\PayloadCacheRefresherBase.cs" />
     <Compile Include="Cache\RepositoryCachePolicyBase.cs" />
diff --git a/src/Umbraco.Web/CacheHelperExtensions.cs b/src/Umbraco.Web/CacheHelperExtensions.cs
index ae8df63415..615e6a3982 100644
--- a/src/Umbraco.Web/CacheHelperExtensions.cs
+++ b/src/Umbraco.Web/CacheHelperExtensions.cs
@@ -1,6 +1,5 @@
 using System;
 using System.Web;
-using System.Web.Caching;
 using System.Web.Mvc;
 using System.Web.Mvc.Html;
 using Umbraco.Core.Cache;
@@ -46,7 +45,6 @@ namespace Umbraco.Web
             return appCaches.RuntimeCache.GetCacheItem<IHtmlString>(
                 PartialViewCacheKey + cacheKey,
                 () => htmlHelper.Partial(partialViewName, model, viewData),
-                priority: CacheItemPriority.NotRemovable, //not removable, the same as macros (apparently issue #27610)
                 timeout: new TimeSpan(0, 0, 0, cachedSeconds));
         }