5 files changed, 178 insertions, 265 deletions

diff --git a/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/LocalGridServiceConnector.cs b/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/LocalGridServiceConnector.cs
index e585c25..58bd4ea 100644
--- a/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/LocalGridServiceConnector.cs
+++ b/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/LocalGridServiceConnector.cs
@@ -51,7 +51,7 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
         private static string LogHeader = "[LOCAL GRID SERVICE CONNECTOR]";
 
         private IGridService m_GridService;
-        private Dictionary<UUID, RegionCache> m_LocalCache = new Dictionary<UUID, RegionCache>();
+        private RegionInfoCache m_RegionInfoCache = null;
 
         private bool m_Enabled;
 
@@ -60,10 +60,10 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
             m_log.DebugFormat("{0} LocalGridServicesConnector no parms.", LogHeader);
         }
 
-        public LocalGridServicesConnector(IConfigSource source)
+        public LocalGridServicesConnector(IConfigSource source, RegionInfoCache regionInfoCache)
         {
             m_log.DebugFormat("{0} LocalGridServicesConnector instantiated directly.", LogHeader);
-            InitialiseService(source);
+            InitialiseService(source, regionInfoCache);
         }
 
         #region ISharedRegionModule
@@ -86,19 +86,25 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
                 string name = moduleConfig.GetString("GridServices", "");
                 if (name == Name)
                 {
-                    InitialiseService(source);
-                    m_log.Info("[LOCAL GRID SERVICE CONNECTOR]: Local grid connector enabled");
+                    
+                    if(InitialiseService(source,null))
+                        m_log.Info("[LOCAL GRID SERVICE CONNECTOR]: Local grid connector enabled");
                 }
             }
         }
 
-        private void InitialiseService(IConfigSource source)
+        private bool InitialiseService(IConfigSource source, RegionInfoCache ric)
         {
+            if(ric == null)
+                m_RegionInfoCache = new RegionInfoCache();
+            else
+                m_RegionInfoCache = ric;
+
             IConfig config = source.Configs["GridService"];
             if (config == null)
             {
                 m_log.Error("[LOCAL GRID SERVICE CONNECTOR]: GridService missing from OpenSim.ini");
-                return;
+                return false;
             }
 
             string serviceDll = config.GetString("LocalServiceModule", String.Empty);
@@ -106,7 +112,7 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
             if (serviceDll == String.Empty)
             {
                 m_log.Error("[LOCAL GRID SERVICE CONNECTOR]: No LocalServiceModule named in section GridService");
-                return;
+                return false;
             }
 
             Object[] args = new Object[] { source };
@@ -117,10 +123,11 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
             if (m_GridService == null)
             {
                 m_log.Error("[LOCAL GRID SERVICE CONNECTOR]: Can't load grid service");
-                return;
+                return false;
             }
 
             m_Enabled = true;
+            return true;
         }
 
         public void PostInitialise()
@@ -143,13 +150,8 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
 
             scene.RegisterModuleInterface<IGridService>(this);
 
-            lock (m_LocalCache)
-            {
-                if (m_LocalCache.ContainsKey(scene.RegionInfo.RegionID))
-                    m_log.ErrorFormat("[LOCAL GRID SERVICE CONNECTOR]: simulator seems to have more than one region with the same UUID. Please correct this!");
-                else
-                    m_LocalCache.Add(scene.RegionInfo.RegionID, new RegionCache(scene));
-            }
+            m_RegionInfoCache.CacheLocal(new GridRegion(scene.RegionInfo));
+            scene.EventManager.OnRegionUp += OnRegionUp;
         }
 
         public void RemoveRegion(Scene scene)
@@ -157,11 +159,8 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
             if (!m_Enabled)
                 return;
 
-            lock (m_LocalCache)
-            {
-                m_LocalCache[scene.RegionInfo.RegionID].Clear();
-                m_LocalCache.Remove(scene.RegionInfo.RegionID);
-            }
+            m_RegionInfoCache.Remove(scene.RegionInfo.ScopeID, scene.RegionInfo.RegionID);
+            scene.EventManager.OnRegionUp -= OnRegionUp;
         }
 
         public void RegionLoaded(Scene scene)
@@ -172,6 +171,15 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
 
         #region IGridService
 
+        private void OnRegionUp(GridRegion region)
+        {
+            // This shouldn't happen
+            if (region == null)
+                return;
+            
+            m_RegionInfoCache.CacheNearNeighbour(region.ScopeID, region);           
+        }
+
         public string RegisterRegion(UUID scopeID, GridRegion regionInfo)
         {
             return m_GridService.RegisterRegion(scopeID, regionInfo);
@@ -189,7 +197,15 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
 
         public GridRegion GetRegionByUUID(UUID scopeID, UUID regionID)
         {
-            return m_GridService.GetRegionByUUID(scopeID, regionID);
+            bool inCache = false;
+            GridRegion rinfo = m_RegionInfoCache.Get(scopeID,regionID,out inCache);
+            if (inCache)
+                return rinfo;
+
+            rinfo = m_GridService.GetRegionByUUID(scopeID, regionID);
+            if(rinfo != null)
+             m_RegionInfoCache.Cache(scopeID, rinfo);
+            return rinfo;
         }
 
         // Get a region given its base coordinates.
@@ -197,52 +213,37 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
         //     be the base coordinate of the region.
         public GridRegion GetRegionByPosition(UUID scopeID, int x, int y)
         {
-            GridRegion region = null;
-            uint regionX = Util.WorldToRegionLoc((uint)x);
-            uint regionY = Util.WorldToRegionLoc((uint)y);
+            // try in cache by handler first
+            ulong regionHandle = Util.RegionWorldLocToHandle((uint)x, (uint)y);
 
-            // First see if it's a neighbour, even if it isn't on this sim.
-            // Neighbour data is cached in memory, so this is fast
+            bool inCache = false;
+            GridRegion rinfo = m_RegionInfoCache.Get(scopeID, regionHandle, out inCache);
+            if (inCache)
+                return rinfo;
 
-            lock (m_LocalCache)
-            {
-                foreach (RegionCache rcache in m_LocalCache.Values)
-                {
-                    region = rcache.GetRegionByPosition(x, y);
-                    if (region != null)
-                    {
-                        //m_log.DebugFormat("{0} GetRegionByPosition. Found region {1} in cache (of region {2}). Pos=<{3},{4}>",
-                        //                 LogHeader, region.RegionName, rcache.RegionName,
-                        //                 Util.WorldToRegionLoc((uint)region.RegionLocX), Util.WorldToRegionLoc((uint)region.RegionLocY));
-                        break;
-                    }
-                }
-            }
+            // try in cache by slower position next
+            rinfo = m_RegionInfoCache.Get(scopeID, x, y, out inCache);
+            if (inCache)
+                return rinfo;
 
             // Then try on this sim (may be a lookup in DB if this is using MySql).
-            if (region == null)
-            {
-                region = m_GridService.GetRegionByPosition(scopeID, x, y);
-
-                if (region == null)
-                {
-                    m_log.DebugFormat("{0} GetRegionByPosition. Region not found by grid service. Pos=<{1},{2}>",
-                                      LogHeader, regionX, regionY);
-                }
-                else
-                {
-                    m_log.DebugFormat("{0} GetRegionByPosition. Got region {1} from grid service. Pos=<{2},{3}>",
-                                      LogHeader, region.RegionName,
-                                      Util.WorldToRegionLoc((uint)region.RegionLocX), Util.WorldToRegionLoc((uint)region.RegionLocY));
-                }
-            }
-
-            return region;
+            rinfo = m_GridService.GetRegionByPosition(scopeID, x, y);
+            if(rinfo != null)
+                m_RegionInfoCache.Cache(scopeID, rinfo);
+            return rinfo;
         }
 
         public GridRegion GetRegionByName(UUID scopeID, string regionName)
         {
-            return m_GridService.GetRegionByName(scopeID, regionName);
+            bool inCache = false;
+            GridRegion rinfo = m_RegionInfoCache.Get(scopeID, regionName, out inCache);
+            if (inCache)
+                return rinfo;
+
+            rinfo =  m_GridService.GetRegionByName(scopeID, regionName);
+            if(rinfo != null)
+                m_RegionInfoCache.Cache(scopeID, rinfo);
+            return rinfo;
         }
 
         public List<GridRegion> GetRegionsByName(UUID scopeID, string name, int maxNumber)
@@ -290,7 +291,7 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
         public void HandleShowNeighboursCommand(string module, string[] cmdparams)
         {
             System.Text.StringBuilder caps = new System.Text.StringBuilder();
-
+/*   temporary broken
             lock (m_LocalCache)
             {
                 foreach (KeyValuePair<UUID, RegionCache> kvp in m_LocalCache)
@@ -303,6 +304,8 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
             }
 
             MainConsole.Instance.Output(caps.ToString());
+*/
+            MainConsole.Instance.Output("Neighbours list not avaiable in this version\n");
         }
     }
 }
diff --git a/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/RegionCache.cs b/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/RegionCache.cs
deleted file mode 100644
index 2961c10..0000000
--- a/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/RegionCache.cs
+++ /dev/null
@@ -1,103 +0,0 @@
-/*
- * Copyright (c) Contributors, http://opensimulator.org/
- * See CONTRIBUTORS.TXT for a full list of copyright holders.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *     * Redistributions of source code must retain the above copyright
- *       notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above copyright
- *       notice, this list of conditions and the following disclaimer in the
- *       documentation and/or other materials provided with the distribution.
- *     * Neither the name of the OpenSimulator Project nor the
- *       names of its contributors may be used to endorse or promote products
- *       derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-using System;
-using System.Collections.Generic;
-using System.Reflection;
-
-using OpenSim.Framework;
-using OpenSim.Region.Framework.Scenes;
-using OpenSim.Services.Interfaces;
-using GridRegion = OpenSim.Services.Interfaces.GridRegion;
-
-using OpenMetaverse;
-using log4net;
-
-namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
-{
-    public class RegionCache
-    {
-        private static readonly ILog m_log =
-                LogManager.GetLogger(
-                MethodBase.GetCurrentMethod().DeclaringType);
-
-        private Scene m_scene;
-        private Dictionary<ulong, GridRegion> m_neighbours = new Dictionary<ulong, GridRegion>();
-
-        public string RegionName
-        {
-            get { return m_scene.RegionInfo.RegionName; }
-        }
-
-        public RegionCache(Scene s)
-        {
-            m_scene = s;
-            m_scene.EventManager.OnRegionUp += OnRegionUp;
-        }
-
-        private void OnRegionUp(GridRegion otherRegion)
-        {
-            // This shouldn't happen
-            if (otherRegion == null)
-                return;
-
-            m_log.DebugFormat("[REGION CACHE]: (on region {0}) Region {1} is up @ {2}-{3}",
-                m_scene.RegionInfo.RegionName, otherRegion.RegionName, Util.WorldToRegionLoc((uint)otherRegion.RegionLocX), Util.WorldToRegionLoc((uint)otherRegion.RegionLocY));
-
-            m_neighbours[otherRegion.RegionHandle] = otherRegion;
-        }
-
-        public void Clear()
-        {
-            m_scene.EventManager.OnRegionUp -= OnRegionUp;
-            m_neighbours.Clear();
-        }
-
-        public List<GridRegion> GetNeighbours()
-        {
-            return new List<GridRegion>(m_neighbours.Values);
-        }
- 
-        public GridRegion GetRegionByPosition(int x, int y)
-        {
-            // do actual search by position
-            // not the best, but this will not hold that many regions
-            GridRegion foundRegion = null;
-            foreach(GridRegion r in m_neighbours.Values)
-            {
-                if (x >= r.RegionLocX && x < r.RegionLocX + r.RegionSizeX
-                     && y >= r.RegionLocY && y < r.RegionLocY + r.RegionSizeY)
-                {
-                    foundRegion = r;
-                    break;
-                }
-            }
-
-            return foundRegion;
-        }
-    }
-}
diff --git a/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/RegionInfoCache.cs b/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/RegionInfoCache.cs
index ffe3fab..8f3dfc1 100644
--- a/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/RegionInfoCache.cs
+++ b/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/RegionInfoCache.cs
@@ -59,26 +59,42 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
         
         public void Cache(UUID scopeID, GridRegion rinfo)
         {
-            // for now, do not cache negative results; this is because
-            // we need to figure out how to handle regions coming online
-            // in a timely way
             if (rinfo == null)
                 return;
             
             m_Cache.AddOrUpdate(scopeID, rinfo, CACHE_EXPIRATION_SECONDS);
         }
 
+        public void CacheLocal(GridRegion rinfo)
+        {
+            if (rinfo == null)
+                return;
+            
+            m_Cache.AddOrUpdate(rinfo.ScopeID, rinfo, 1e7f);
+        }
+
+        public void CacheNearNeighbour(UUID scopeID, GridRegion rinfo)
+        {
+            if (rinfo == null)
+                return;
+            
+//            m_Cache.AddOrUpdate(scopeID, rinfo, CACHE_EXPIRATION_SECONDS);
+            m_Cache.Add(scopeID, rinfo, CACHE_EXPIRATION_SECONDS); // don't override local regions
+        }
+
         public void Cache(UUID scopeID, GridRegion rinfo, float expireSeconds)
         {
-            // for now, do not cache negative results; this is because
-            // we need to figure out how to handle regions coming online
-            // in a timely way
             if (rinfo == null)
                 return;
             
             m_Cache.AddOrUpdate(scopeID, rinfo, expireSeconds);
         }
 
+        public void Remove(UUID scopeID, UUID regionID)
+        {
+            m_Cache.Remove(scopeID, regionID);
+        }
+
         public GridRegion Get(UUID scopeID, UUID regionID, out bool inCache)
         {
             inCache = false;
@@ -134,43 +150,47 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
             
             return null;
         }
-
     }
 
 
     // following code partialy adapted from lib OpenMetaverse
-    public class RegionKey : IComparable<RegionKey>
+    public class RegionKey 
     {
-        private UUID m_scopeID;
-        private UUID m_RegionID;
-        private DateTime m_expirationDate;
+        public UUID ScopeID;
+        public UUID RegionID;
 
         public RegionKey(UUID scopeID, UUID id)
         {
-            m_scopeID = scopeID;
-            m_RegionID = id;
+            ScopeID = scopeID;
+            RegionID = id;
         }
-
-        public UUID ScopeID
+  
+        public override int GetHashCode()
         {
-            get { return m_scopeID; }
+            int hash = ScopeID.GetHashCode();
+            hash += hash * 23 + RegionID.GetHashCode();
+            return hash;
         }
-        public DateTime ExpirationDate
+
+        public override bool Equals(Object b)
         {
-            get { return m_expirationDate; }
-            set { m_expirationDate = value; }
+            if(b == null)
+                return false;
+            RegionKey kb = b as RegionKey;
+            return (ScopeID == kb.ScopeID && RegionID == kb.RegionID);    
         }
+    }
 
-        public int GetHaskCode()
+    class RegionKeyEqual : EqualityComparer<RegionKey>
+    {
+        public override int GetHashCode(RegionKey rk)
         {
-            int hash = m_scopeID.GetHashCode();
-            hash += hash * 23 + m_RegionID.GetHashCode();
-            return hash;
+            return rk.GetHashCode();
         }
 
-        public int CompareTo(RegionKey other)
+        public override bool Equals(RegionKey a, RegionKey b)
         {
-            return GetHashCode().CompareTo(other.GetHashCode());
+            return (a.ScopeID == b.ScopeID && a.RegionID == b.RegionID);    
         }
     }
 
@@ -246,7 +266,7 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
         }
     }
   
-    public sealed class RegionsExpiringCache
+    public class RegionsExpiringCache
     {
         const double CACHE_PURGE_HZ = 60; // seconds
         const int MAX_LOCK_WAIT = 10000; // milliseconds
@@ -256,7 +276,9 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
         /// <summary>For thread safety</summary>
         object isPurging = new object();
 
-        Dictionary<RegionKey, GridRegion> timedStorage = new Dictionary<RegionKey, GridRegion>();
+        static RegionKeyEqual keyequal = new RegionKeyEqual();
+        Dictionary<RegionKey, GridRegion> timedStorage = new Dictionary<RegionKey, GridRegion>(keyequal);
+        Dictionary<RegionKey, DateTime> timedExpires = new Dictionary<RegionKey, DateTime>();
         Dictionary<UUID, RegionInfoByScope> InfobyScope = new Dictionary<UUID, RegionInfoByScope>();
         private System.Timers.Timer timer = new System.Timers.Timer(TimeSpan.FromSeconds(CACHE_PURGE_HZ).TotalMilliseconds);
 
@@ -278,8 +300,9 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
                 if (timedStorage.ContainsKey(key))
                     return false;
 
-                key.ExpirationDate = DateTime.UtcNow + TimeSpan.FromSeconds(expirationSeconds);
-                timedStorage.Add(key, region);
+                DateTime expire = DateTime.UtcNow + TimeSpan.FromSeconds(expirationSeconds);
+                timedStorage[key] = region;
+                timedExpires[key] = expire;
 
                 RegionInfoByScope ris = null;
                 if(!InfobyScope.TryGetValue(scope, out ris) || ris == null)
@@ -303,12 +326,13 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
             try
             {
                 RegionKey key = new RegionKey(scope, region.RegionID);
-                key.ExpirationDate = DateTime.UtcNow + TimeSpan.FromSeconds(expirationSeconds);
+                DateTime expire = DateTime.UtcNow + TimeSpan.FromSeconds(expirationSeconds);
 
                 if (timedStorage.ContainsKey(key))
                 {
-                    timedStorage.Remove(key);
-                    timedStorage.Add(key, region);
+                    timedStorage[key] = region;
+                    if(expire > timedExpires[key])
+                        timedExpires[key] = expire;
 
                     if(!InfobyScope.ContainsKey(scope))
                     {
@@ -319,7 +343,8 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
                 }
                 else
                 {
-                    timedStorage.Add(key, region);
+                    timedStorage[key] = region;
+                    timedExpires[key] = expire;
                     RegionInfoByScope ris = null;
                     if(!InfobyScope.TryGetValue(scope, out ris) || ris == null)
                     {
@@ -341,6 +366,7 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
             try
             {
                 timedStorage.Clear();
+                timedExpires.Clear();
                 InfobyScope.Clear();
             }
             finally { Monitor.Exit(syncRoot); }
@@ -370,10 +396,13 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
                 return timedStorage.Count;
             }
         }
-
         public bool Remove(UUID scope, GridRegion region)
         {
-            RegionKey key = new RegionKey(scope, region.RegionID);
+            return Remove(scope, region.RegionID);
+        }
+        public bool Remove(UUID scope, UUID regionID)
+        {
+            RegionKey key = new RegionKey(scope, regionID);
 
             if (!Monitor.TryEnter(syncRoot, MAX_LOCK_WAIT))
                 throw new ApplicationException("Lock could not be acquired after " + MAX_LOCK_WAIT + "ms");
@@ -391,6 +420,7 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
                             InfobyScope.Remove(scope);
                     }
                     timedStorage.Remove(key);
+                    timedExpires.Remove(key);
                     return true;
                 }
                 else
@@ -544,9 +574,11 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
                 if (!timedStorage.ContainsKey(key))
                     return false;
 
-                timedStorage.Remove(key);
-                key.ExpirationDate = DateTime.UtcNow + TimeSpan.FromSeconds(expirationSeconds);
-                timedStorage.Add(key, region);
+                DateTime expire = DateTime.UtcNow + TimeSpan.FromSeconds(expirationSeconds);
+                timedStorage[key] = region;
+                if(expire > timedExpires[key])
+                    timedExpires[key] = expire;
+
                 return true;
             }
             finally { Monitor.Exit(syncRoot); }
@@ -572,26 +604,18 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
                     return;
                 try
                 {
-                    OpenMetaverse.Lazy<List<object>> expiredItems = new OpenMetaverse.Lazy<List<object>>();
+                    List<RegionKey> expiredkeys = new List<RegionKey>();
 
-                    foreach (RegionKey timedKey in timedStorage.Keys)
+                    foreach (KeyValuePair<RegionKey, DateTime> kvp in timedExpires)
                     {
-                        if (timedKey.ExpirationDate < signalTime)
-                        {
-                            // Mark the object for purge
-                            expiredItems.Value.Add(timedKey);
-                        }
-                        else
-                        {
-                            break;
-                        }
+                        if (kvp.Value < signalTime)
+                            expiredkeys.Add(kvp.Key);
                     }
-
-
-                    RegionInfoByScope ris;
-                    if (expiredItems.IsValueCreated)
+                    
+                    if (expiredkeys.Count > 0)
                     {
-                        foreach (RegionKey key in expiredItems.Value)
+                        RegionInfoByScope ris;
+                        foreach (RegionKey key in expiredkeys)
                         {
                             ris = null;
                             if(InfobyScope.TryGetValue(key.ScopeID, out ris) && ris != null)
@@ -604,6 +628,7 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
                                     InfobyScope.Remove(key.ScopeID);
                             }
                             timedStorage.Remove(key);
+                            timedExpires.Remove(key);
                         }
                     }
                 }
diff --git a/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/RemoteGridServiceConnector.cs b/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/RemoteGridServiceConnector.cs
index 6575cfd..363adde 100644
--- a/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/RemoteGridServiceConnector.cs
+++ b/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/RemoteGridServiceConnector.cs
@@ -87,39 +87,47 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
                 string name = moduleConfig.GetString("GridServices", "");
                 if (name == Name)
                 {
-                    InitialiseServices(source);
-                    m_Enabled = true;
-                    m_log.Info("[REMOTE GRID CONNECTOR]: Remote grid enabled");
+                    if(InitialiseServices(source))
+                    {
+                        m_Enabled = true;
+                        m_log.Info("[REMOTE GRID CONNECTOR]: Remote grid enabled");
+                    }
                 }
             }
         }
 
-        private void InitialiseServices(IConfigSource source)
+        private bool InitialiseServices(IConfigSource source)
         {
             IConfig gridConfig = source.Configs["GridService"];
             if (gridConfig == null)
             {
                 m_log.Error("[REMOTE GRID CONNECTOR]: GridService missing from OpenSim.ini");
-                return;
+                return false;
             }
 
             string networkConnector = gridConfig.GetString("NetworkConnector", string.Empty);
             if (networkConnector == string.Empty)
             {
                 m_log.Error("[REMOTE GRID CONNECTOR]: Please specify a network connector under [GridService]");
-                return;
+                return false;
             }
 
             Object[] args = new Object[] { source }; 
             m_RemoteGridService = ServerUtils.LoadPlugin<IGridService>(networkConnector, args);
 
-            m_LocalGridService = new LocalGridServicesConnector(source);
+            m_LocalGridService = new LocalGridServicesConnector(source, m_RegionInfoCache);
+            if (m_LocalGridService == null)
+            {
+                m_log.Error("[REMOTE GRID CONNECTOR]: failed to loar local connector");
+                return false;
+            }
+
+            return true;
         }   
 
         public void PostInitialise()
         {
-            if (m_LocalGridService != null)
-                ((ISharedRegionModule)m_LocalGridService).PostInitialise();
+            ((ISharedRegionModule)m_LocalGridService).PostInitialise();
         }
 
         public void Close()
@@ -131,14 +139,12 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
             if (m_Enabled)
                 scene.RegisterModuleInterface<IGridService>(this);
 
-            if (m_LocalGridService != null)
-                ((ISharedRegionModule)m_LocalGridService).AddRegion(scene);
+            ((ISharedRegionModule)m_LocalGridService).AddRegion(scene);
         }
 
         public void RemoveRegion(Scene scene)
         {
-            if (m_LocalGridService != null)
-                ((ISharedRegionModule)m_LocalGridService).RemoveRegion(scene);
+            ((ISharedRegionModule)m_LocalGridService).RemoveRegion(scene);
         }
 
         public void RegionLoaded(Scene scene)
@@ -174,15 +180,11 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
 
         public GridRegion GetRegionByUUID(UUID scopeID, UUID regionID)
         {
-            bool inCache = false;
-            GridRegion rinfo = m_RegionInfoCache.Get(scopeID,regionID,out inCache);
-            if (inCache)
+            GridRegion rinfo = m_LocalGridService.GetRegionByUUID(scopeID, regionID);
+            if (rinfo != null)
                 return rinfo;
-            
-            rinfo = m_LocalGridService.GetRegionByUUID(scopeID, regionID);
-            if (rinfo == null)
-                rinfo = m_RemoteGridService.GetRegionByUUID(scopeID, regionID);
 
+            rinfo = m_RemoteGridService.GetRegionByUUID(scopeID, regionID);
             m_RegionInfoCache.Cache(scopeID, rinfo);
             return rinfo;
         }
@@ -193,24 +195,15 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
         // The coordinates are world coords (meters), NOT region units.
         public GridRegion GetRegionByPosition(UUID scopeID, int x, int y)
         {
-            // try in cache by handler first
-            ulong regionHandle = Util.RegionWorldLocToHandle((uint)x, (uint)y);
-
-            bool inCache = false;
-            GridRegion rinfo = m_RegionInfoCache.Get(scopeID, regionHandle, out inCache);
-            if (inCache)
-                return rinfo;
-
-            // try in cache by slower position next
-            rinfo = m_RegionInfoCache.Get(scopeID, x, y, out inCache);
-            if (inCache)
+            GridRegion rinfo = m_LocalGridService.GetRegionByPosition(scopeID, x, y);
+            if (rinfo != null)
+            {
+                m_log.DebugFormat("[REMOTE GRID CONNECTOR]: GetRegionByPosition. Added region {0} to the cache from local. Pos=<{1},{2}>, RegionHandle={3}",
+                    rinfo.RegionName, rinfo.RegionCoordX, rinfo.RegionCoordY, rinfo.RegionHandle);
                 return rinfo;
+            }
 
-            rinfo = m_LocalGridService.GetRegionByPosition(scopeID, x, y);
-            if (rinfo == null)
-                rinfo = m_RemoteGridService.GetRegionByPosition(scopeID, x, y);
-
-            
+            rinfo = m_RemoteGridService.GetRegionByPosition(scopeID, x, y);
 
             if (rinfo == null)
             {
@@ -223,23 +216,18 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
                 m_RegionInfoCache.Cache(scopeID, rinfo);
 
                 m_log.DebugFormat("[REMOTE GRID CONNECTOR]: GetRegionByPosition. Added region {0} to the cache. Pos=<{1},{2}>, RegionHandle={3}",
-                    rinfo.RegionName, rinfo.RegionCoordX, rinfo.RegionCoordY, (rinfo == null) ? regionHandle : rinfo.RegionHandle);
+                    rinfo.RegionName, rinfo.RegionCoordX, rinfo.RegionCoordY, rinfo.RegionHandle);
             }
             return rinfo;
         }
 
         public GridRegion GetRegionByName(UUID scopeID, string regionName)
         {
-            bool inCache = false;
-            GridRegion rinfo = m_RegionInfoCache.Get(scopeID, regionName, out inCache);
-            if (inCache)
+            GridRegion rinfo = m_LocalGridService.GetRegionByName(scopeID, regionName);
+            if (rinfo != null)
                 return rinfo;
-            
-            rinfo = m_LocalGridService.GetRegionByName(scopeID, regionName);
-            if (rinfo == null)
-                rinfo = m_RemoteGridService.GetRegionByName(scopeID, regionName);
-
-            // can't cache negative results for name lookups
+                
+            rinfo = m_RemoteGridService.GetRegionByName(scopeID, regionName);
             m_RegionInfoCache.Cache(scopeID, rinfo);
             return rinfo;
         }
diff --git a/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/Tests/GridConnectorsTests.cs b/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/Tests/GridConnectorsTests.cs
index c33f7f5..044e0e5 100644
--- a/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/Tests/GridConnectorsTests.cs
+++ b/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/Tests/GridConnectorsTests.cs
@@ -64,7 +64,7 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid.Tests
             config.Configs["GridService"].Set("Region_Test_Region_3", "FallbackRegion");
             config.Configs["GridService"].Set("Region_Other_Region_4", "FallbackRegion");
 
-            m_LocalConnector = new LocalGridServicesConnector(config);
+            m_LocalConnector = new LocalGridServicesConnector(config, null);
         }
 
         /// <summary>