Viewmodel caching WIP

Hyperbar/Factories/IViewModelFactory.cs

@@ -1,6 +0,0 @@
-namespace Hyperbar;
-
-public interface IViewModelFactory<TIn, TOut>
-{
-    ValueTask<TOut> CreateAsync(TIn value);
-}

Hyperbar/Lifecycles/IViewModelFactory.cs

@@ -0,0 +1,30 @@
+namespace Hyperbar;
+
+public interface IViewModelFactory<TParameter, TViewModel>
+{
+    ValueTask<TViewModel> CreateAsync(TParameter value);
+}
+
+public interface IViewModelCache<TKey, TViewModel>
+{
+    void Add(TKey key, TViewModel value);
+
+    void Remove(TKey key);
+}
+
+public class ViewModelCache<TKey, TViewModel> :
+    IViewModelCache<TKey, TViewModel>
+{
+    private readonly Dictionary<TKey, TViewModel> cache = [];
+
+    public void Add(TKey key, 
+        TViewModel value)
+    {
+        cache.TryAdd(key, value);
+    }
+
+    public void Remove(TKey key)
+    {
+        cache.Remove(key);
+    }
+}