Merge pull request #93 from cnblogs/hotfix/computing-expiration

Change computing expiration to work with memcached 1.4

Author: cnblogs-dudu

Enyim.Caching/MemcachedClient.cs

@@ -90,22 +90,22 @@ private void StartPool()
 
         public void Add(string key, object value, int cacheSeconds)
         {
-            Store(StoreMode.Add, key, value, new TimeSpan(0, 0, cacheSeconds));
+            Store(StoreMode.Add, key, value, TimeSpan.FromSeconds(cacheSeconds));
         }
 
         public async Task AddAsync(string key, object value, int cacheSeconds)
         {
-            await StoreAsync(StoreMode.Add, key, value, new TimeSpan(0, 0, cacheSeconds));
+            await StoreAsync(StoreMode.Add, key, value, TimeSpan.FromSeconds(cacheSeconds));
         }
 
         public void Set(string key, object value, int cacheSeconds)
         {
-            Store(StoreMode.Set, key, value, new TimeSpan(0, 0, cacheSeconds));
+            Store(StoreMode.Set, key, value, TimeSpan.FromSeconds(cacheSeconds));
         }
 
         public async Task SetAsync(string key, object value, int cacheSeconds)
         {
-            await StoreAsync(StoreMode.Set, key, value, new TimeSpan(0, 0, cacheSeconds));
+            await StoreAsync(StoreMode.Set, key, value, TimeSpan.FromSeconds(cacheSeconds));
         }
 
         /// <summary>
@@ -1161,6 +1161,11 @@ protected static uint GetExpiration(
                 // infinity
                 if (validFor == TimeSpan.Zero || validFor == TimeSpan.MaxValue) return 0;
 
+                if (validFor.Value.TotalSeconds <= MaxSeconds)
+                {
+                    return (uint)validFor.Value.TotalSeconds;
+                }
+
                 expiresAt = DateTime.Now.Add(validFor.Value);
             }