--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Plugin/ICache.h	Wed Mar 22 16:13:52 2017 +0100
@@ -0,0 +1,42 @@
+/**
+ * Advanced authorization plugin for Orthanc
+ * Copyright (C) 2017 Osimis, Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU Affero 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
+ * Affero General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+#pragma once
+
+#include <boost/noncopyable.hpp>
+#include <string>
+
+namespace OrthancPlugins
+{
+  class ICache : public boost::noncopyable
+  {
+  public:
+    virtual ~ICache()
+    {
+    }
+
+    virtual void Store(const std::string& key,
+                       const std::string& value,
+                       unsigned int validity /* in seconds */) = 0;
+
+    virtual void Invalidate(const std::string& key) = 0;
+
+    virtual bool Retrieve(std::string& value,
+                          const std::string& key) = 0;
+  };
+}