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Kreta.Core/Cache.cs

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+using System;
+using System.Diagnostics.Contracts;
+using System.Runtime.Caching;
+
+namespace Kreta.Core
+{
+    public static class Cache
+    {
+        private static readonly MemoryCache DefaultCache = new MemoryCache("DefaultCache");
+
+        private static readonly CacheItemPolicy DefaultPolicy = new CacheItemPolicy { SlidingExpiration = TimeSpan.FromSeconds(30) };
+
+        [Pure]
+        public static Guid Add(object value)
+        {
+            var guid = Guid.NewGuid();
+            DefaultCache.Add(new CacheItem($"{guid}", value), DefaultPolicy);
+            return guid;
+        }
+
+        public static bool Add(string key, object value, CacheItemPolicy cacheItemPolicy)
+        {
+            return DefaultCache.Add(new CacheItem(key, value), cacheItemPolicy);
+        }
+
+        public static T AddOrGetExisting<T>(string key, T value, CacheItemPolicy cacheItemPolicy)
+        {
+            object existingValue = DefaultCache.AddOrGetExisting(key, value, cacheItemPolicy);
+            return (existingValue != null) ? (T)existingValue : value;
+        }
+
+        public static void Set(string key, object value, CacheItemPolicy cacheItemPolicy)
+        {
+            DefaultCache.Set(new CacheItem(key, value), cacheItemPolicy);
+        }
+
+        [Pure]
+        public static object Get(Guid guid)
+        {
+            return DefaultCache.Get($"{guid}");
+        }
+
+        [Pure]
+        public static object Get(string key)
+        {
+            return DefaultCache.Get(key);
+        }
+
+        [Pure]
+        public static void Remove(string key)
+        {
+            try
+            {
+                DefaultCache.Remove(key);
+            }
+            catch
+            {
+                throw;
+            }
+        }
+    }
+}