--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/OrthancFramework/Sources/FileStorage/StorageCache.h	Thu Sep 30 12:14:19 2021 +0200
@@ -0,0 +1,59 @@
+/**
+ * Orthanc - A Lightweight, RESTful DICOM Store
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ * Copyright (C) 2017-2021 Osimis S.A., Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program. If not, see
+ * <http://www.gnu.org/licenses/>.
+ **/
+
+
+#pragma once
+
+#include "../Cache/MemoryStringCache.h"
+
+#include "../Compatibility.h"  // For ORTHANC_OVERRIDE
+
+#include <boost/thread/mutex.hpp>
+#include <map>
+
+namespace Orthanc
+{
+   /**
+   *  Note: this class is thread safe
+   **/
+   class ORTHANC_PUBLIC StorageCache : public boost::noncopyable
+    {
+      MemoryStringCache   cache_;
+    public:
+      void SetMaximumSize(size_t size);
+
+      void Add(const std::string& uuid, 
+               FileContentType contentType,
+               const std::string& value);
+
+      void Add(const std::string& uuid, 
+               FileContentType contentType,
+               const void* buffer,
+               size_t size);
+
+      void Invalidate(const std::string& uuid, FileContentType contentType);
+
+      bool Fetch(std::string& value, 
+                 const std::string& uuid,
+                 FileContentType contentType);
+
+    };
+}