diff --git a/src/com/urise/webapp/storage/ArrayStorage.java b/src/com/urise/webapp/storage/ArrayStorage.java
index b37a9eb7..169cca78 100644
--- a/src/com/urise/webapp/storage/ArrayStorage.java
+++ b/src/com/urise/webapp/storage/ArrayStorage.java
@@ -6,7 +6,7 @@
 /**
  * Array based storage for Resumes
  */
-public class ArrayStorage {
+public class ArrayStorage implements Storage {
 
   private static final int STORAGE_LIMIT = 10000;
   private Resume[] storage = new Resume[STORAGE_LIMIT];
diff --git a/src/com/urise/webapp/storage/Storage.java b/src/com/urise/webapp/storage/Storage.java
new file mode 100644
index 00000000..9372adba
--- /dev/null
+++ b/src/com/urise/webapp/storage/Storage.java
@@ -0,0 +1,24 @@
+package com.urise.webapp.storage;
+
+import com.urise.webapp.model.Resume;
+import java.util.Arrays;
+
+public interface Storage {
+
+  void clear();
+
+  void update(Resume r);
+
+  void save(Resume r);
+
+  Resume get(String uuid);
+
+  void delete(String uuid);
+
+  /**
+   * @return array, contains only Resumes in storage (without null)
+   */
+  Resume[] getAll();
+
+  int size();
+}