fix Fifo & Lru CacheKey exists bug

Author: Ahoo-Wang

build/version.props

@@ -2,7 +2,7 @@
 	<PropertyGroup>
 		<VersionMajor>4</VersionMajor>
 		<VersionMinor>0</VersionMinor>
-		<VersionPatch>11</VersionPatch>
+		<VersionPatch>12</VersionPatch>
 		<VersionPrefix>$(VersionMajor).$(VersionMinor).$(VersionPatch)</VersionPrefix>
 	</PropertyGroup>
 </Project>

src/SmartSql/Cache/Default/FifoCacheProvider.cs

@@ -41,13 +41,17 @@ public bool TryAdd(CacheKey cacheKey, object cacheItem)
         {
             lock (this)
             {
+                if (_cache.ContainsKey(cacheKey))
+                {
+                    return false;
+                }
+                _cacheKeys.Enqueue(cacheKey);
+                _cache.Add(cacheKey, cacheItem);
                 if (_cacheKeys.Count > _cacheSize)
                 {
                     var removedKey = _cacheKeys.Dequeue();
                     _cache.Remove(removedKey);
                 }
-                _cacheKeys.Enqueue(cacheKey);
-                _cache.Add(cacheKey, cacheItem);
             }
             return true;
         }

src/SmartSql/Cache/Default/LruCacheProvider.cs

@@ -42,14 +42,18 @@ public bool TryAdd(CacheKey cacheKey, object cacheItem)
         {
             lock (this)
             {
+                if (_cache.ContainsKey(cacheKey))
+                {
+                    return false;
+                }
+                _cache.Add(cacheKey, cacheItem);
+                _cacheKeys.Add(cacheKey);
                 if (_cacheKeys.Count > _cacheSize)
                 {
                     var removedKey = _cacheKeys[0];
                     _cacheKeys.RemoveAt(0);
                     _cache.Remove(removedKey);
                 }
-                _cache.Add(cacheKey, cacheItem);
-                _cacheKeys.Add(cacheKey);
             }
             return true;
         }