feat: dispose MemoryCache

Author: alastairtree

LazyCache/ICacheProvider.cs

@@ -4,7 +4,7 @@
 
 namespace LazyCache
 {
-    public interface ICacheProvider
+    public interface ICacheProvider : IDisposable
     {
         void Set(string key, object item, MemoryCacheEntryOptions policy);
         object Get(string key);

LazyCache/Mocks/MockCachingService.cs

@@ -108,5 +108,9 @@ public Task<T> GetOrCreateAsync<T>(string key, Func<ICacheEntry, Task<T>> func)
         {
             return func(null);
         }
+
+        public void Dispose()
+        {
+        }
     }
 }

LazyCache/Providers/MemoryCacheProvider.cs

@@ -6,7 +6,7 @@ namespace LazyCache.Providers
 {
     public class MemoryCacheProvider : ICacheProvider
     {
-        private readonly IMemoryCache cache;
+        internal readonly IMemoryCache cache;
 
         public MemoryCacheProvider() : this(new MemoryCache(new MemoryCacheOptions()))
         {
@@ -41,5 +41,10 @@ public Task<T> GetOrCreateAsync<T>(string key, Func<ICacheEntry, Task<T>> factor
         {
             return cache.GetOrCreateAsync(key, factory);
         }
+
+        public void Dispose()
+        {
+            cache?.Dispose();
+        }
     }
 }