Optimizations

MarketDataLib/Cache/LocalPriceCache.cs

@@ -15,6 +15,7 @@ namespace MarketData.Cache
 	{
 		private Dictionary<String,PricesByDate> priceCache=new Dictionary<String,PricesByDate>();
     private static LocalPriceCache instance=null;
+    private DateTime latestDate = Utility.Epoch;
     private Thread cacheMonitorThread=null;
     private volatile bool threadRun=true;
     private int cacheCycle=300000;
@@ -30,7 +31,8 @@ namespace MarketData.Cache
     {
       lock(thisLock)
       {
-        priceCache=new Dictionary<String,PricesByDate>(); 
+        priceCache=new Dictionary<String,PricesByDate>();
+        RefreshLatestDate();
       }
     }
 
@@ -55,18 +57,38 @@ namespace MarketData.Cache
     {
       lock(typeof(LocalPriceCache))
       {
-        if(null==instance)instance=new LocalPriceCache();
+        if(null==instance)
+        {
+          instance=new LocalPriceCache();
+          instance.RefreshLatestDate();
+        }
         return instance;
       }
     }
 
+    public void RefreshLatestDate()
+    {
+      lock(typeof(LocalPriceCache))
+      {
+        latestDate=PricingDA.GetLatestDate();
+      }
+    }
+
+    public DateTime GetLatestDate()
+    {
+      lock(typeof(LocalPriceCache))
+      {
+        return latestDate;
+      }
+    }
+
     public void Refresh()
     {
       lock(typeof(LocalPriceCache))
       {
         List<String> symbols=new List<String>(priceCache.Keys);
         Dictionary<String, DateTime> maxDbDates = PricingDA.GetLatestDates(symbols);
-
+        RefreshLatestDate();
         foreach(String symbol in symbols)
         {
           PricesByDate symbolPrices=priceCache[symbol];