diff --git a/src/ims/in-memory-storage-entry.hpp b/src/ims/in-memory-storage-entry.hpp
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+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2013-2017 Regents of the University of California.
+ *
+ * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
+ *
+ * ndn-cxx library 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.
+ *
+ * ndn-cxx library 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 copies of the GNU General Public License and GNU Lesser
+ * General Public License along with ndn-cxx, e.g., in COPYING.md file.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ *
+ * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
+ */
+
+#ifndef NDN_IMS_IN_MEMORY_STORAGE_ENTRY_HPP
+#define NDN_IMS_IN_MEMORY_STORAGE_ENTRY_HPP
+
+#include "../data.hpp"
+#include "../interest.hpp"
+#include "../util/scheduler-scoped-event-id.hpp"
+
+namespace ndn {
+
+/** @brief Represents an in-memory storage entry
+ */
+class InMemoryStorageEntry : noncopyable
+{
+public:
+  /** @brief Create an entry
+   */
+  InMemoryStorageEntry();
+
+  /** @brief Releases reference counts on shared objects
+   */
+  void
+  release();
+
+  /** @brief Returns the name of the Data packet stored in the in-memory storage entry
+   */
+  const Name&
+  getName() const
+  {
+    return m_dataPacket->getName();
+  }
+
+  /** @brief Returns the full name (including implicit digest) of the Data packet stored
+   *         in the in-memory storage entry
+   */
+  const Name&
+  getFullName() const
+  {
+    return m_dataPacket->getFullName();
+  }
+
+  /** @brief Returns the Data packet stored in the in-memory storage entry
+   */
+  const Data&
+  getData() const
+  {
+    return *m_dataPacket;
+  }
+
+  /** @brief Changes the content of in-memory storage entry
+   *
+   *  This method also allows data to satisfy Interest with MustBeFresh
+   */
+  void
+  setData(const Data& data);
+
+  /** @brief Set eventId for the markStale event.
+   */
+  void
+  setMarkStaleEventId(unique_ptr<util::scheduler::ScopedEventId> eventId);
+
+  /** @brief Disable the data from satisfying interest with MustBeFresh
+   */
+  void
+  markStale();
+
+  /** @brief Check if the data can satisfy an interest with MustBeFresh
+   */
+  bool
+  isFresh()
+  {
+    return m_isFresh;
+  }
+
+private:
+  shared_ptr<const Data> m_dataPacket;
+
+  bool m_isFresh;
+  unique_ptr<util::scheduler::ScopedEventId> m_markStaleEventId;
+};
+
+} // namespace ndn
+
+#endif // NDN_IMS_IN_MEMORY_STORAGE_ENTRY_HPP