基于Redis的CustomerSessionProvider（二）

接一的考虑，那么就做Redis的SessionProvider就非常简单了，只考虑整个Session的缓存，主要实现以下两个函数就可以了

 

 1         public override SessionStateStoreData GetItem(System.Web.HttpContext context, string id, out bool locked, out TimeSpan lockAge, out object lockId, out SessionStateActions actions)
 2         {
 3             OpenRedis();
 4             var response = _connection.Strings.Get(_dbNumber, id);
 5             var value = _connection.Wait(response);
 6             var sessionItems = value.FromBinary<SerializableSessionStateItemCollection>();
 7 
 8             locked = false;
 9             lockAge = new TimeSpan(0);
10             lockId = null;
11             actions = SessionStateActions.None;
12 
13             SessionStateStoreData storeData = null;
14             if (sessionItems != null)
15             {
16                 storeData = new SessionStateStoreData(sessionItems, SessionStateUtility.GetSessionStaticObjects(context), _timeout);
17             }
18             else
19             {
20                 storeData = new SessionStateStoreData(new SerializableSessionStateItemCollection(), SessionStateUtility.GetSessionStaticObjects(context), _timeout);
21             }
22             return storeData;
23         }
24 
25         public override SessionStateStoreData GetItemExclusive(System.Web.HttpContext context, string id, out bool locked, out TimeSpan lockAge, out object lockId, out SessionStateActions actions)
26         {
27             return GetItem(context, id, out locked, out lockAge, out lockId, out actions);
28         }
View Code

 

 1         public override void SetAndReleaseItemExclusive(System.Web.HttpContext context, string id, SessionStateStoreData item, object lockId, bool newItem)
 2         {
 3             OpenRedis();
 4             var items = item.Items as SerializableSessionStateItemCollection;
 5             if (items != null)
 6             {
 7                 var response = _connection.Strings.Set(_dbNumber, id, item.Items.ToBinary(), _timeout*60);
 8                 _connection.Wait(response);
 9             }
10         }
View Code


配置Web.Config

      <sessionState mode="Custom" customProvider="redis" timeout="20">
          <providers>
              <add name="redis" type=".Web.Session.RedisSessionProvider,Common.Web" server="localhost" port ="6379" dbNumber="2"/>
          </providers>
      </sessionState>

调试通过，包括设置和获取Session，Session超时，Session Aband，基本达到要求，美中不足的是，存入Session的对象必须标记可序列化的。

经测试发现，每次Request，都会调用上面的2个函数，用户量大的时候，redis会有点压力

 

posted @ 2013-09-14 21:28  gzkeo  阅读(1117)  评论(0)  编辑  收藏  举报