Add a cache system on the referential info

+ Add an identity service

Back/skydiveLogs-api.DomainBusiness/CacheService.cs

@@ -0,0 +1,51 @@
+using skydiveLogs_api.Domain;
+using skydiveLogs_api.DomainBusiness.Interfaces;
+using System;
+using System.Runtime.Caching;
+
+namespace skydiveLogs_api.DomainBusiness
+{
+    public class CacheService : ICacheService
+    {
+        #region Public Methods
+
+        public bool Contains(CacheType type, int id = 0)
+        {
+            var key = GetKey(id, type);
+            return MemoryCache.Default[key.ToString()] != null;
+        }
+
+        public void Delete(CacheType type, int id = 0)
+        {
+            var key = GetKey(id, type);
+            MemoryCache.Default.Remove(key.ToString());
+        }
+
+        public T Get<T>(CacheType type, int id = 0)
+        {
+            var key = GetKey(id, type);
+            return (T)MemoryCache.Default[key.ToString()];
+        }
+
+        public void Put(CacheType type, object value, int duration, int id = 0)
+        {
+            var key = GetKey(id, type);
+            if (duration <= 0)
+                throw new ArgumentException("Duration cannot be less or equal to zero", "duration");
+
+            var policy = new CacheItemPolicy
+            {
+                AbsoluteExpiration = DateTime.Now.AddMilliseconds(duration)
+            };
+
+            MemoryCache.Default.Set(key.ToString(), value, policy);
+        }
+
+        private string GetKey(int id, CacheType type)
+        {
+            return $"{id}-{type}";
+        }
+
+        #endregion Public Methods
+    }
+}