diff --git a/src/main/java/org/gcube/portal/databook/server/DBCassandraAstyanaxImpl.java b/src/main/java/org/gcube/portal/databook/server/DBCassandraAstyanaxImpl.java
index 362e49d..23dea6e 100644
--- a/src/main/java/org/gcube/portal/databook/server/DBCassandraAstyanaxImpl.java
+++ b/src/main/java/org/gcube/portal/databook/server/DBCassandraAstyanaxImpl.java
@@ -879,6 +879,38 @@ public final class DBCassandraAstyanaxImpl implements DatabookStore {
 	 * {@inheritDoc}
 	 */
 	@Override
+	public List<Notification> getRangeNotificationsByUser(String userid,int from, int quantity) throws NotificationTypeNotFoundException, ColumnNameNotFoundException, NotificationIDNotFoundException {
+		if (from < 1) {
+			throw new IllegalArgumentException("From must be greather than 0");
+		} 
+		ArrayList<Notification> toReturn = new ArrayList<Notification>();
+		ArrayList<String> notificationsIDs = getUserNotificationsIds(userid);
+		
+		//if from is greater than feeds size return empty
+		if (from >=  notificationsIDs.size()) {
+			_log.warn("The starting point of the range is greather than the total number of feeds for this timeline: " + from + " >= " + notificationsIDs.size());
+			return new  ArrayList<Notification>();
+		}
+		
+		int rangeStart = notificationsIDs.size()-from;
+		int rangeEnd = rangeStart-quantity;
+		
+		//check that you reached the end
+		if (rangeEnd<1)
+			rangeEnd = 0;
+		
+		_log.debug("BEFORE starting Point=" + rangeStart + " rangeEnd= " + rangeEnd);
+		//need them in reverse order		
+		for (int i = rangeStart; i > rangeEnd; i--) {
+			Notification toAdd = readNotification(notificationsIDs.get(i));
+			toReturn.add(toAdd);
+		}
+		return toReturn;	
+	}
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
 	public boolean setAllNotificationReadByUser(String userid) throws NotificationIDNotFoundException, NotificationTypeNotFoundException, ColumnNameNotFoundException {
 		ArrayList<String> notificationsIDs = getUserNotificationsIds(userid);
 
@@ -1625,4 +1657,5 @@ public final class DBCassandraAstyanaxImpl implements DatabookStore {
 
 
 
+
 }
diff --git a/src/main/java/org/gcube/portal/databook/server/DatabookCassandraTest.java b/src/main/java/org/gcube/portal/databook/server/DatabookCassandraTest.java
index 1d8d6dc..3bf4681 100644
--- a/src/main/java/org/gcube/portal/databook/server/DatabookCassandraTest.java
+++ b/src/main/java/org/gcube/portal/databook/server/DatabookCassandraTest.java
@@ -39,352 +39,362 @@ public class DatabookCassandraTest {
 		System.out.println("End");
 	}
 
-//
-//	/**
-//	 * use exclusively to add a new CF to a keyspace
-//	 */
-//	@Test
-//	public void addNotifPreferencesColumnFamily() {
-//		//		ColumnFamily<String, String> cf_UserNotificationsPreferences =	new ColumnFamily<String, String>(
-//		//				DBCassandraAstyanaxImpl.USER_NOTIFICATIONS_PREFERENCES,  // Column Family Name
-//		//				StringSerializer.get(),   // Key Serializer
-//		//				StringSerializer.get());  // Column Serializer
-//		//			
-//		//		try {
-//		//			new CassandraClusterConnection(false).getKeyspace().createColumnFamily(cf_UserNotificationsPreferences, ImmutableMap.<String, Object>builder()
-//		//			        .put("default_validation_class", "UTF8Type")
-//		//			        .put("key_validation_class",     "UTF8Type")
-//		//			        .put("comparator_type",          "UTF8Type")
-//		//			        .build());
-//		//		} catch (ConnectionException e) {
-//		//			e.printStackTrace();
-//		//		}
-//	}
-//
-//	@Test
-//	public void testFriendships() {
-//		assertTrue(store.requestFriendship("massimiliano.assante", "leonardo.candela"));
-//		assertTrue(store.requestFriendship("massimiliano.assante", "ermit"));
-//		assertTrue(store.requestFriendship("massimiliano.assante", "giorgino"));
-//		assertTrue(store.requestFriendship("barabba", "massimiliano.assante"));
-//
-//		assertTrue(store.approveFriendship("leonardo.candela", "massimiliano.assante"));
-//		assertTrue(store.approveFriendship("ermit", "massimiliano.assante"));
-//
-//		assertTrue(store.denyFriendship("giorgino", "massimiliano.assante"));
-//		System.out.println("Pending Connections for massimiliano.assante:");
-//		for (String userid: store.getPendingFriendRequests("massimiliano.assante")) {
-//			System.out.println(userid);
-//		}
-//
-//		System.out.println("Connections for massimiliano.assante:");
-//		for (String userid: store.getFriends("massimiliano.assante")) {
-//			System.out.println(userid);
-//		}
-//
-//	}
-//	@Test
-//	public void testLikedFeedsRetrieval() {
-//		try {
-//			for (Feed feed : store.getAllLikedFeedsByUser("luca.frosini", 10)) {
-//				System.out.println(feed);
-//			}
-//		} catch (Exception e) {
-//			e.printStackTrace();
-//		} 
-//	}
-//
-//	
-//	@Test
-//	public void testSingleNotificationPreference() {
-//		try {
-//			for (NotificationChannelType channel : store.getUserNotificationChannels("massimiliano.assante", NotificationType.COMMENT)) {
-//				System.out.println(channel);
-//			}
-//		} catch (NotificationChannelTypeNotFoundException e) {
-//			e.printStackTrace();
-//		} catch (NotificationTypeNotFoundException e) {
-//			e.printStackTrace();
-//		};
-//		HashMap<NotificationType, NotificationChannelType[]> toCreate = new HashMap<NotificationType, NotificationChannelType[]>();
-//		for (int i = 0; i < NotificationType.values().length; i++) {
-//			if (i == 0)
-//				toCreate.put(NotificationType.values()[i], null); 
-//			else if (i ==3) {
-//				NotificationChannelType[] nots = {NotificationChannelType.PORTAL};
-//				toCreate.put(NotificationType.values()[i], nots);
-//			}
-//			else
-//				toCreate.put(NotificationType.values()[i], NotificationChannelType.values()); 
-//		}
-//		store.setUserNotificationPreferences("antonio.gioia", toCreate);
-//
-//
-//		try {
-//			for (NotificationChannelType channel : store.getUserNotificationChannels("antonio.gioia", NotificationType.WP_FOLDER_RENAMED)) { //i == 3
-//				System.out.println(channel);
-//			}
-//		} catch (Exception e) {
-//			e.printStackTrace();
-//		}
-//	}
-//
-//	@Test
-//	public void testSingleNotification() {
-//		Notification not = new Notification(
-//				UUID.randomUUID().toString(), 
-//				NotificationType.LIKE, 
-//				"leonardo.candela", 
-//				"MESSAGEID", 
-//				new Date(), 
-//				"uri", 
-//				"This is notification about a like", 
-//				false, 
-//				"leonardo.candela", "Leonardo Candela",
-//				"thumburl");
-//		assertTrue(store.saveNotification(not));
-//
-//		not = new Notification(
-//				UUID.randomUUID().toString(), 
-//				NotificationType.MESSAGE, 
-//				"massimiliano.assante", 
-//				"MESSAGEID", 
-//				new Date(), 
-//				"uri", 
-//				"This is notification about a like", 
-//				false, 
-//				"antonio.gioia", "Antonio Gioia",
-//				"thumburl");
-//		assertTrue(store.saveNotification(not));
-//		System.out.println("Writing one Notification " +  not);
-//	}
-//
-//	@Test
-//	public void testNotifications() {
-//		Notification not = null;
-//		System.out.println("Writing 18 Notifications");
-//		int count = 18;
-//		for (int i = 0; i < count; i++) {
-//			if (i % 2 != 0) {
-//				not = new Notification(UUID.randomUUID().toString(), NotificationType.JOB_COMPLETED_OK, 
-//						"leonardo.candela",  "TWEETID", new Date(), "uri", "This is notification about job completed OK #"+i, false, "pasquale.pagano", "Pasquale Pagano", "thumburl");
-//			} else {
-//				not = new Notification(UUID.randomUUID().toString(), NotificationType.JOB_COMPLETED_NOK, 
-//						"massimiliano.assante", "MESSAGEID", new Date(), "uri", "This is notification about completed NOK #"+i, false, "leonardo.candela", "Leonardo Candela", "thumburl");
-//			}
-//			assertTrue(store.saveNotification(not));
-//			try {
-//				Thread.sleep(150);
-//			} catch (InterruptedException e) {
-//				// TODO Auto-generated catch block
-//				e.printStackTrace();
-//			}
-//		}
-//
-//		Notification rNot= null;
-//		try {
-//
-//			//read
-//			rNot = store.readNotification(not.getKey().toString());
-//			assertNotNull(rNot);
-//			System.out.println("Reading one Notification " +  rNot.getKey() + ": " + rNot.getDescription() + " Type: " + rNot.getType());
-//
-//			//set Read
-//			assertTrue(store.setNotificationRead(rNot.getKey().toString()));
-//
-//			System.out.println("Notification " +  rNot.getKey() + " of Type: " + rNot.getType() + " was set to READ");
-//
-//			not = new Notification(UUID.randomUUID().toString(), NotificationType.LIKE, 
-//					"leonardo.candela", "FEEDID", new Date(), "uri", "This is notification of a Liked Leo feed by Massi", false, "massimiliano.assante", "Massimiliano Assante", "thumburl");
-//			assertTrue(store.saveNotification(not));
-//			try {
-//				Thread.sleep(150);
-//			} catch (InterruptedException e) {
-//				// TODO Auto-generated catch block
-//				e.printStackTrace();
-//			}
-//			rNot = store.readNotification(not.getKey().toString());
-//			System.out.println("Reading another Notification " +  rNot.getKey() + " of Type: " + rNot.getType() + " Read:? " + rNot.isRead());
-//			//			//set Read
-//			//			assertTrue(store.setNotificationRead(rNot.getKey().toString()));
-//			//			System.out.println("Notification " +  rNot.getKey() + " of Type: " + rNot.getType() + " was set to READ subject was this: " + rNot.getSubjectid());
-//			//			
-//			Random randomGenerator = new Random();
-//
-//			System.out.println("leonardo.candela Notifications: ");
-//			List<Notification> recentNots =  store.getAllNotificationByUser("leonardo.candela",  randomGenerator.nextInt(50));
-//			assertNotNull(recentNots);
-//			for (Notification notif :recentNots)
-//				System.out.println(notif);
-//
-//
-//			System.out.println("massimiliano.assante Notifications: ");
-//			recentNots =  store.getUnreadNotificationsByUser("massimiliano.assante");
-//			assertNotNull(recentNots);
-//			for (Notification notif :recentNots)
-//				System.out.println(notif);
-//		} catch (Exception e) {
-//			e.printStackTrace();
-//		} 
-//	}
-//
-//
+	//
+	//	/**
+	//	 * use exclusively to add a new CF to a keyspace
+	//	 */
+	//	@Test
+	//	public void addNotifPreferencesColumnFamily() {
+	//		//		ColumnFamily<String, String> cf_UserNotificationsPreferences =	new ColumnFamily<String, String>(
+	//		//				DBCassandraAstyanaxImpl.USER_NOTIFICATIONS_PREFERENCES,  // Column Family Name
+	//		//				StringSerializer.get(),   // Key Serializer
+	//		//				StringSerializer.get());  // Column Serializer
+	//		//			
+	//		//		try {
+	//		//			new CassandraClusterConnection(false).getKeyspace().createColumnFamily(cf_UserNotificationsPreferences, ImmutableMap.<String, Object>builder()
+	//		//			        .put("default_validation_class", "UTF8Type")
+	//		//			        .put("key_validation_class",     "UTF8Type")
+	//		//			        .put("comparator_type",          "UTF8Type")
+	//		//			        .build());
+	//		//		} catch (ConnectionException e) {
+	//		//			e.printStackTrace();
+	//		//		}
+	//	}
+	//
+	//	@Test
+	//	public void testFriendships() {
+	//		assertTrue(store.requestFriendship("massimiliano.assante", "leonardo.candela"));
+	//		assertTrue(store.requestFriendship("massimiliano.assante", "ermit"));
+	//		assertTrue(store.requestFriendship("massimiliano.assante", "giorgino"));
+	//		assertTrue(store.requestFriendship("barabba", "massimiliano.assante"));
+	//
+	//		assertTrue(store.approveFriendship("leonardo.candela", "massimiliano.assante"));
+	//		assertTrue(store.approveFriendship("ermit", "massimiliano.assante"));
+	//
+	//		assertTrue(store.denyFriendship("giorgino", "massimiliano.assante"));
+	//		System.out.println("Pending Connections for massimiliano.assante:");
+	//		for (String userid: store.getPendingFriendRequests("massimiliano.assante")) {
+	//			System.out.println(userid);
+	//		}
+	//
+	//		System.out.println("Connections for massimiliano.assante:");
+	//		for (String userid: store.getFriends("massimiliano.assante")) {
+	//			System.out.println(userid);
+	//		}
+	//
+	//	}
+	//	@Test
+	//	public void testLikedFeedsRetrieval() {
+	//		try {
+	//			for (Feed feed : store.getAllLikedFeedsByUser("luca.frosini", 10)) {
+	//				System.out.println(feed);
+	//			}
+	//		} catch (Exception e) {
+	//			e.printStackTrace();
+	//		} 
+	//	}
+	//
+	//	
+	//	@Test
+	//	public void testSingleNotificationPreference() {
+	//		try {
+	//			for (NotificationChannelType channel : store.getUserNotificationChannels("massimiliano.assante", NotificationType.COMMENT)) {
+	//				System.out.println(channel);
+	//			}
+	//		} catch (NotificationChannelTypeNotFoundException e) {
+	//			e.printStackTrace();
+	//		} catch (NotificationTypeNotFoundException e) {
+	//			e.printStackTrace();
+	//		};
+	//		HashMap<NotificationType, NotificationChannelType[]> toCreate = new HashMap<NotificationType, NotificationChannelType[]>();
+	//		for (int i = 0; i < NotificationType.values().length; i++) {
+	//			if (i == 0)
+	//				toCreate.put(NotificationType.values()[i], null); 
+	//			else if (i ==3) {
+	//				NotificationChannelType[] nots = {NotificationChannelType.PORTAL};
+	//				toCreate.put(NotificationType.values()[i], nots);
+	//			}
+	//			else
+	//				toCreate.put(NotificationType.values()[i], NotificationChannelType.values()); 
+	//		}
+	//		store.setUserNotificationPreferences("antonio.gioia", toCreate);
+	//
+	//
+	//		try {
+	//			for (NotificationChannelType channel : store.getUserNotificationChannels("antonio.gioia", NotificationType.WP_FOLDER_RENAMED)) { //i == 3
+	//				System.out.println(channel);
+	//			}
+	//		} catch (Exception e) {
+	//			e.printStackTrace();
+	//		}
+	//	}
+	//
+	//	@Test
+	//	public void testSingleNotification() {
+	//		Notification not = new Notification(
+	//				UUID.randomUUID().toString(), 
+	//				NotificationType.LIKE, 
+	//				"leonardo.candela", 
+	//				"MESSAGEID", 
+	//				new Date(), 
+	//				"uri", 
+	//				"This is notification about a like", 
+	//				false, 
+	//				"leonardo.candela", "Leonardo Candela",
+	//				"thumburl");
+	//		assertTrue(store.saveNotification(not));
+	//
+	//		not = new Notification(
+	//				UUID.randomUUID().toString(), 
+	//				NotificationType.MESSAGE, 
+	//				"massimiliano.assante", 
+	//				"MESSAGEID", 
+	//				new Date(), 
+	//				"uri", 
+	//				"This is notification about a like", 
+	//				false, 
+	//				"antonio.gioia", "Antonio Gioia",
+	//				"thumburl");
+	//		assertTrue(store.saveNotification(not));
+	//		System.out.println("Writing one Notification " +  not);
+	//	}
+	//
+	//	@Test
+	//	public void testNotifications() {
+	//		Notification not = null;
+	//		System.out.println("Writing 18 Notifications");
+	//		int count = 18;
+	//		for (int i = 0; i < count; i++) {
+	//			if (i % 2 != 0) {
+	//				not = new Notification(UUID.randomUUID().toString(), NotificationType.JOB_COMPLETED_OK, 
+	//						"leonardo.candela",  "TWEETID", new Date(), "uri", "This is notification about job completed OK #"+i, false, "pasquale.pagano", "Pasquale Pagano", "thumburl");
+	//			} else {
+	//				not = new Notification(UUID.randomUUID().toString(), NotificationType.JOB_COMPLETED_NOK, 
+	//						"massimiliano.assante", "MESSAGEID", new Date(), "uri", "This is notification about completed NOK #"+i, false, "leonardo.candela", "Leonardo Candela", "thumburl");
+	//			}
+	//			assertTrue(store.saveNotification(not));
+	//			try {
+	//				Thread.sleep(150);
+	//			} catch (InterruptedException e) {
+	//				// TODO Auto-generated catch block
+	//				e.printStackTrace();
+	//			}
+	//		}
+	//
+	//		Notification rNot= null;
+	//		try {
+	//
+	//			//read
+	//			rNot = store.readNotification(not.getKey().toString());
+	//			assertNotNull(rNot);
+	//			System.out.println("Reading one Notification " +  rNot.getKey() + ": " + rNot.getDescription() + " Type: " + rNot.getType());
+	//
+	//			//set Read
+	//			assertTrue(store.setNotificationRead(rNot.getKey().toString()));
+	//
+	//			System.out.println("Notification " +  rNot.getKey() + " of Type: " + rNot.getType() + " was set to READ");
+	//
+	//			not = new Notification(UUID.randomUUID().toString(), NotificationType.LIKE, 
+	//					"leonardo.candela", "FEEDID", new Date(), "uri", "This is notification of a Liked Leo feed by Massi", false, "massimiliano.assante", "Massimiliano Assante", "thumburl");
+	//			assertTrue(store.saveNotification(not));
+	//			try {
+	//				Thread.sleep(150);
+	//			} catch (InterruptedException e) {
+	//				// TODO Auto-generated catch block
+	//				e.printStackTrace();
+	//			}
+	//			rNot = store.readNotification(not.getKey().toString());
+	//			System.out.println("Reading another Notification " +  rNot.getKey() + " of Type: " + rNot.getType() + " Read:? " + rNot.isRead());
+	//			//			//set Read
+	//			//			assertTrue(store.setNotificationRead(rNot.getKey().toString()));
+	//			//			System.out.println("Notification " +  rNot.getKey() + " of Type: " + rNot.getType() + " was set to READ subject was this: " + rNot.getSubjectid());
+	//			//			
+	//			Random randomGenerator = new Random();
+	//
+	//			System.out.println("leonardo.candela Notifications: ");
+	//			List<Notification> recentNots =  store.getAllNotificationByUser("leonardo.candela",  randomGenerator.nextInt(50));
+	//			assertNotNull(recentNots);
+	//			for (Notification notif :recentNots)
+	//				System.out.println(notif);
+	//
+	//
+	//			System.out.println("massimiliano.assante Notifications: ");
+	//			recentNots =  store.getUnreadNotificationsByUser("massimiliano.assante");
+	//			assertNotNull(recentNots);
+	//			for (Notification notif :recentNots)
+	//				System.out.println(notif);
+	//		} catch (Exception e) {
+	//			e.printStackTrace();
+	//		} 
+	//	}
+	//
+	//
 	@Test
 	public void testFeeds() {
-//		int count = 18;
-//		Feed feed = null;
-//		for (int i = 0; i < count; i++) {
-//			if (i % 2 != 0) {
-//				feed = new Feed(UUID.randomUUID().toString(), FeedType.JOIN, "massimiliano.assante", new Date(), "/gcube/devsec/devVRE", 
-//						"www.d4science.org/monitor", "thumbUri", "This is feed# "+ i, PrivacyLevel.VRES, "Massimiliano Assante", "massimiliano.assante@isti.cnr.it", "thumburl", "linkTitle", "linkDesc", "host");
-//			} else {
-//				feed = new Feed(UUID.randomUUID().toString(), FeedType.TWEET, "leonardo.candela", new Date(), "", 
-//						"www.d4science.org/web/guest", "thumbUri", "This is feed# "+ i, PrivacyLevel.PORTAL, "Leonardo Candela", "leonardo.candela@isti.cnr.it", "thumburl", "linkTitle", "linkDesc", "host");
-//			}
-//			assertTrue(store.saveUserFeed(feed));
-//			try {
-//				Thread.sleep(150);
-//			} catch (InterruptedException e) {
-//				// TODO Auto-generated catch block
-//				e.printStackTrace();
-//			}
-//		}
-//
-//		Feed rFeed = null;
-//		try {
-//			rFeed = store.readFeed(feed.getKey().toString());
-//			rFeed = store.readFeed(feed.getKey().toString());
-//			rFeed = store.readFeed(feed.getKey().toString());
-//			rFeed = store.readFeed(feed.getKey().toString());
-//			assertNotNull(rFeed);
-//
-//			String feedIdToDelete = UUID.randomUUID().toString();
-//			feed = new Feed(feedIdToDelete, FeedType.PUBLISH, "massimiliano.assante", new Date(), "/gcube/devsec/devVRE", 
-//					"www.d4science.org/monitor", "thumbUri", "This is feed to be deleted", PrivacyLevel.VRES, "Massimiliano Assante", "massimiliano.assante@isti.cnr.it", "thumburl", "linkTitle", "linkDesc", "host", false);
-//			assertTrue(store.saveUserFeed(feed));
-//			try {
-//				Thread.sleep(250);
-//			} catch (InterruptedException e) {
-//				// TODO Auto-generated catch block
-//				e.printStackTrace();
-//			}
-//			System.out.println("Test Delete Feed ");
-//			assertTrue(store.deleteFeed(feedIdToDelete));
-//
-//			System.out.println("massimiliano.assante ALL FEEDS: ");
-//			for (Feed recFeed : store.getAllFeedsByUser("massimiliano.assante"))
-//				System.out.println(recFeed);
-//
-//			Random randomGenerator = new Random();
-//
-//			System.out.println("leonardo.candela TIMELINE: ");
-//			List<Feed> recentFeeds =  store.getRecentFeedsByUser("leonardo.candela",  randomGenerator.nextInt(50));
-//			assertNotNull(recentFeeds);
-//			for (Feed recFeed :recentFeeds)
-//				System.out.println(recFeed);		
-	
+		//		int count = 18;
+		//		Feed feed = null;
+		//		for (int i = 0; i < count; i++) {
+		//			if (i % 2 != 0) {
+		//				feed = new Feed(UUID.randomUUID().toString(), FeedType.JOIN, "massimiliano.assante", new Date(), "/gcube/devsec/devVRE", 
+		//						"www.d4science.org/monitor", "thumbUri", "This is feed# "+ i, PrivacyLevel.VRES, "Massimiliano Assante", "massimiliano.assante@isti.cnr.it", "thumburl", "linkTitle", "linkDesc", "host");
+		//			} else {
+		//				feed = new Feed(UUID.randomUUID().toString(), FeedType.TWEET, "leonardo.candela", new Date(), "", 
+		//						"www.d4science.org/web/guest", "thumbUri", "This is feed# "+ i, PrivacyLevel.PORTAL, "Leonardo Candela", "leonardo.candela@isti.cnr.it", "thumburl", "linkTitle", "linkDesc", "host");
+		//			}
+		//			assertTrue(store.saveUserFeed(feed));
+		//			try {
+		//				Thread.sleep(150);
+		//			} catch (InterruptedException e) {
+		//				// TODO Auto-generated catch block
+		//				e.printStackTrace();
+		//			}
+		//		}
+		//
+		//		Feed rFeed = null;
+		//		try {
+		//			rFeed = store.readFeed(feed.getKey().toString());
+		//			rFeed = store.readFeed(feed.getKey().toString());
+		//			rFeed = store.readFeed(feed.getKey().toString());
+		//			rFeed = store.readFeed(feed.getKey().toString());
+		//			assertNotNull(rFeed);
+		//
+		//			String feedIdToDelete = UUID.randomUUID().toString();
+		//			feed = new Feed(feedIdToDelete, FeedType.PUBLISH, "massimiliano.assante", new Date(), "/gcube/devsec/devVRE", 
+		//					"www.d4science.org/monitor", "thumbUri", "This is feed to be deleted", PrivacyLevel.VRES, "Massimiliano Assante", "massimiliano.assante@isti.cnr.it", "thumburl", "linkTitle", "linkDesc", "host", false);
+		//			assertTrue(store.saveUserFeed(feed));
+		//			try {
+		//				Thread.sleep(250);
+		//			} catch (InterruptedException e) {
+		//				// TODO Auto-generated catch block
+		//				e.printStackTrace();
+		//			}
+		//			System.out.println("Test Delete Feed ");
+		//			assertTrue(store.deleteFeed(feedIdToDelete));
+		//
+		//			System.out.println("massimiliano.assante ALL FEEDS: ");
+		//			for (Feed recFeed : store.getAllFeedsByUser("massimiliano.assante"))
+		//				System.out.println(recFeed);
+		//
+		//			Random randomGenerator = new Random();
+		//
+		//			System.out.println("leonardo.candela TIMELINE: ");
+		//			List<Feed> recentFeeds =  store.getRecentFeedsByUser("leonardo.candela",  randomGenerator.nextInt(50));
+		//			assertNotNull(recentFeeds);
+		//			for (Feed recFeed :recentFeeds)
+		//				System.out.println(recFeed);		
+
 		try {
 			//store.enableDeletedPosts();
-			System.out.println("/gcube/devsec/devVRE  TIMELINE: ");
-			int from = 1;
+			System.out.println("Notifications  TIMELINE: ");
+
+			int from = 0;
 			for (int i = 0; i < 5; i++) {
 				System.out.println("\nFROM="+from);
-				RangeFeeds range = store.getRecentFeedsByVREAndRange("/gcube/devsec/TestVREFolder2", from, 5);
-				List<Feed> recentFeeds =  range.getFeeds();
-				assertNotNull(recentFeeds);
-				for (Feed recFeed :recentFeeds)
-					System.out.println("->"+recFeed.getDescription());	
-				from = range.getLastReturnedFeedTimelineIndex()-1;
+				List<Notification> range = store.getRangeNotificationsByUser("massimiliano.assante", from, 50);
+				for (Notification notification : range) {
+					System.out.println(notification.getDescription());
+					from = 1+i * 50;
+				}
 			}
-			
+			//			int from = 1;
+			//			for (int i = 0; i < 5; i++) {
+			//				System.out.println("\nFROM="+from);
+			//				RangeFeeds range = store.getRecentFeedsByVREAndRange("/gcube/devsec/TestVREFolder2", from, 5);
+			//				List<Feed> recentFeeds =  range.getFeeds();
+			//				assertNotNull(recentFeeds);
+			//				for (Feed recFeed :recentFeeds)
+			//					System.out.println("->"+recFeed.getDescription());	
+			//				from = range.getLastReturnedFeedTimelineIndex()-1;
+			//			}
 
-//			System.out.println("PORTAL  TIMELINE: ");
-//			recentFeeds =  store.getAllPortalPrivacyLevelFeeds();
-//			assertNotNull(recentFeeds);
-//			for (Feed recFeed :recentFeeds)
-//				System.out.println(recFeed);		
+
+			//			System.out.println("PORTAL  TIMELINE: ");
+			//			recentFeeds =  store.getAllPortalPrivacyLevelFeeds();
+			//			assertNotNull(recentFeeds);
+			//			for (Feed recFeed :recentFeeds)
+			//				System.out.println(recFeed);		
 
 		} catch (Exception e) {
 			e.printStackTrace();
 		} 
 	}
-//
-//	//	@Test
-//	//	public void testNotifications() {
-//	//		int count = 10;
-//	//		Notification notf = null;
-//	//		for (int i = 0; i < count; i++) {
-//	//			notf = new Notification(UUID.randomUUID().toString(), NotificationType.MESSAGE, "massimiliano.assante", new Date(), "http://urir.com", "Desc #"+i, "Gino Camillo", false);
-//	//			assertTrue(store.saveNotification(notf));
-//	//		}
-//	//		try {
-//	//			assertNotNull(store.getAllNotificationByUser("massimiliano.assante"));
-//	//		} catch (Exception e) {
-//	//			e.printStackTrace();
-//	//		} 
-//	//	}
-//
-//	@Test
-//	public void testComments() {
-//		int count = 10;
-//		Feed feed = new Feed(UUID.randomUUID().toString(), FeedType.SHARE, "massimiliano.assante", new Date(), "/gcube/devsec/devVRE", 
-//				"http://www.d4science.org/monitor", "thumbUri", "This is feed that is going to be commented ", PrivacyLevel.PUBLIC, "Massimiliano Assante", 
-//				"massimiliano.assante@isti.cnr.it", "thumburl", "linkTitle", "linkDesc", "host", false);
-//		assertTrue(store.saveUserFeed(feed));
-//
-//		Comment toDelete = null;
-//		for (int i = 0; i < count; i++) {
-//			try {
-//				toDelete = new Comment(UUID.randomUUID().toString(),"leonardo.candela", 
-//						new Date(), feed.getKey().toString(), "This comment #"+i, "Leonardo Candela", "thumbUrl");
-//				assertTrue(store.addComment(toDelete));
-//
-//			} catch (FeedIDNotFoundException e) {
-//				System.out.println("Exception feed id not found");
-//			}			
-//		}
-//		System.out.println("GetAllCOmmentsByFeed ");
-//		for (Comment cm : store.getAllCommentByFeed(feed.getKey().toString())) {
-//			System.out.println(cm.getText());
-//		};
-//
-//		try {
-//			assertTrue(store.deleteComment(toDelete.getKey(), toDelete.getFeedid()));
-//		} catch (Exception e) {
-//			System.out.println("Exception feed id not found");
-//		}
-//	}
-//
-//	@Test
-//	public void testLikes() {
-//		int count = 10;
-//		Feed feed = new Feed(UUID.randomUUID().toString(), FeedType.SHARE, "massimiliano.assante", new Date(), "/gcube/devsec/devVRE", 
-//				"http://www.d4science.org/monitor", "thumbUri", "This feed is Liked ", PrivacyLevel.PUBLIC, 
-//				"Massimiliano Assante", "massimiliano.assante@isti.cnr.it", "thumburl", "linkTitle", "linkDesc", "host", false);
-//		assertTrue(store.saveUserFeed(feed));
-//		Like toUnlike = new Like(UUID.randomUUID().toString(),"massimiliano.assante", 
-//				new Date(), feed.getKey().toString(), "Massi Pallino", "thumbUrl");
-//
-//		try {
-//			assertTrue(store.like(toUnlike));
-//			for (int i = 0; i < count; i++) 
-//				assertTrue(store.like(new Like(UUID.randomUUID().toString(),"massimiliano.assante", 
-//						new Date(), feed.getKey().toString(), "Rino Pallino", "thumbUrl")));
-//
-//			System.out.println("massimiliano.assante liked the following feeds: ");
-//			for (String feedid : store.getAllLikedFeedIdsByUser("massimiliano.assante")) {
-//				System.out.println(feedid);
-//			}
-//
-//			for (Like like : store.getAllLikesByFeed(feed.getKey().toString())) {
-//				System.out.println(like);
-//			}
-//
-//			System.out.println("trying unlike");
-//			assertTrue(store.unlike(toUnlike.getKey(), toUnlike.getFeedid()));
-//
-//		} catch (Exception e) {
-//			System.out.println("Exception feed id not found");
-//		}
-//	}
+	//
+	//	//	@Test
+	//	//	public void testNotifications() {
+	//	//		int count = 10;
+	//	//		Notification notf = null;
+	//	//		for (int i = 0; i < count; i++) {
+	//	//			notf = new Notification(UUID.randomUUID().toString(), NotificationType.MESSAGE, "massimiliano.assante", new Date(), "http://urir.com", "Desc #"+i, "Gino Camillo", false);
+	//	//			assertTrue(store.saveNotification(notf));
+	//	//		}
+	//	//		try {
+	//	//			assertNotNull(store.getAllNotificationByUser("massimiliano.assante"));
+	//	//		} catch (Exception e) {
+	//	//			e.printStackTrace();
+	//	//		} 
+	//	//	}
+	//
+	//	@Test
+	//	public void testComments() {
+	//		int count = 10;
+	//		Feed feed = new Feed(UUID.randomUUID().toString(), FeedType.SHARE, "massimiliano.assante", new Date(), "/gcube/devsec/devVRE", 
+	//				"http://www.d4science.org/monitor", "thumbUri", "This is feed that is going to be commented ", PrivacyLevel.PUBLIC, "Massimiliano Assante", 
+	//				"massimiliano.assante@isti.cnr.it", "thumburl", "linkTitle", "linkDesc", "host", false);
+	//		assertTrue(store.saveUserFeed(feed));
+	//
+	//		Comment toDelete = null;
+	//		for (int i = 0; i < count; i++) {
+	//			try {
+	//				toDelete = new Comment(UUID.randomUUID().toString(),"leonardo.candela", 
+	//						new Date(), feed.getKey().toString(), "This comment #"+i, "Leonardo Candela", "thumbUrl");
+	//				assertTrue(store.addComment(toDelete));
+	//
+	//			} catch (FeedIDNotFoundException e) {
+	//				System.out.println("Exception feed id not found");
+	//			}			
+	//		}
+	//		System.out.println("GetAllCOmmentsByFeed ");
+	//		for (Comment cm : store.getAllCommentByFeed(feed.getKey().toString())) {
+	//			System.out.println(cm.getText());
+	//		};
+	//
+	//		try {
+	//			assertTrue(store.deleteComment(toDelete.getKey(), toDelete.getFeedid()));
+	//		} catch (Exception e) {
+	//			System.out.println("Exception feed id not found");
+	//		}
+	//	}
+	//
+	//	@Test
+	//	public void testLikes() {
+	//		int count = 10;
+	//		Feed feed = new Feed(UUID.randomUUID().toString(), FeedType.SHARE, "massimiliano.assante", new Date(), "/gcube/devsec/devVRE", 
+	//				"http://www.d4science.org/monitor", "thumbUri", "This feed is Liked ", PrivacyLevel.PUBLIC, 
+	//				"Massimiliano Assante", "massimiliano.assante@isti.cnr.it", "thumburl", "linkTitle", "linkDesc", "host", false);
+	//		assertTrue(store.saveUserFeed(feed));
+	//		Like toUnlike = new Like(UUID.randomUUID().toString(),"massimiliano.assante", 
+	//				new Date(), feed.getKey().toString(), "Massi Pallino", "thumbUrl");
+	//
+	//		try {
+	//			assertTrue(store.like(toUnlike));
+	//			for (int i = 0; i < count; i++) 
+	//				assertTrue(store.like(new Like(UUID.randomUUID().toString(),"massimiliano.assante", 
+	//						new Date(), feed.getKey().toString(), "Rino Pallino", "thumbUrl")));
+	//
+	//			System.out.println("massimiliano.assante liked the following feeds: ");
+	//			for (String feedid : store.getAllLikedFeedIdsByUser("massimiliano.assante")) {
+	//				System.out.println(feedid);
+	//			}
+	//
+	//			for (Like like : store.getAllLikesByFeed(feed.getKey().toString())) {
+	//				System.out.println(like);
+	//			}
+	//
+	//			System.out.println("trying unlike");
+	//			assertTrue(store.unlike(toUnlike.getKey(), toUnlike.getFeedid()));
+	//
+	//		} catch (Exception e) {
+	//			System.out.println("Exception feed id not found");
+	//		}
+	//	}
 }
diff --git a/src/main/java/org/gcube/portal/databook/server/DatabookStore.java b/src/main/java/org/gcube/portal/databook/server/DatabookStore.java
index 2fc7cdc..b2c92e0 100644
--- a/src/main/java/org/gcube/portal/databook/server/DatabookStore.java
+++ b/src/main/java/org/gcube/portal/databook/server/DatabookStore.java
@@ -177,7 +177,17 @@ public interface DatabookStore {
 	 * @throws ColumnNameNotFoundException 
 	 */
 	List<Notification> getAllNotificationByUser(String userid, int limit) throws NotificationTypeNotFoundException,	ColumnNameNotFoundException, NotificationIDNotFoundException;
-
+	/**
+	 * 
+	 * @param userid user identifier
+	 * @param from the range start has to be greater than 0
+	 * @param quantity the number of most recent notifications for this user starting from "from" param
+	 * @return all the notifications for the userid in the range requested
+	 * @throws NotificationTypeNotFoundException
+	 * @throws ColumnNameNotFoundException
+	 * @throws NotificationIDNotFoundException
+	 */
+	List<Notification> getRangeNotificationsByUser(String userid, int from, int quantity) throws NotificationTypeNotFoundException,	ColumnNameNotFoundException, NotificationIDNotFoundException;
 	/**
 	 * This is a fast way to set all notification to read quickly
 	 * @param userid