Faster cbor serialization with caching

mROA.Cbor/CborSerializationToolkit.cs

@@ -13,6 +13,7 @@ namespace mROA.Cbor
 {
     public class CborSerializationToolkit : IContextualSerializationToolKit
     {
+        private static Dictionary<Type, List<PropertyInfo>> _propertiesCache = new();
         public static TimeSpan SerializationTime = TimeSpan.Zero;
         public byte[] Serialize(object objectToSerialize, IEndPointContext context)
         {
@@ -231,7 +232,7 @@ namespace mROA.Cbor
                 return;
             }
 
-            var properties = FilterProperties(type.GetProperties());
+            var properties = GetAvalibleProperties(type);
             var values = properties.Select(property => property.GetValue(obj)).ToList();
             WriteList(values, writer, context);
         }
@@ -402,9 +403,7 @@ namespace mROA.Cbor
 
         private void FillObject(object obj, Type type, CborReader reader, IEndPointContext? context)
         {
-            var propertyInfos = type.GetProperties();
-            var properties = FilterProperties(propertyInfos);
-
+            var properties = GetAvalibleProperties(type);
             var length = reader.ReadStartArray();
             try
             {
@@ -441,5 +440,16 @@ namespace mROA.Cbor
 
             return finalProperties;
         }
+
+        private List<PropertyInfo> GetAvalibleProperties(Type type)
+        {
+            if (_propertiesCache.TryGetValue(type, out var properties))
+            {
+                return properties;
+            }
+            var propertiesList = FilterProperties(type.GetProperties());
+            _propertiesCache[type] = propertiesList;
+            return propertiesList;
+        }
     }
 }