asp.net Cache vs memcached

一、环境

Server:IBM X365 M3 8Core 8G RAM

OS:windows server 2008 r2 & Hyper-V+CentOS 6.2

二、代码

（1）主体代码，简单读取：

[csharp] 

SqlDataAdapter DataAdapter = new SqlDataAdapter();  

SqlConnection Conn = new SqlConnection(DataConn);  

Conn.Open();  

SqlCommand myCommand = new SqlCommand(sql, Conn);  

DataAdapter.SelectCommand = myCommand;  

DataAdapter.Fill(ds);  

Conn.Close()  

（2）Memcached(客户端:BeITMemcached)

[csharp]  

cache.SendReceiveTimeout = 5000;  

cache.MinPoolSize = 2;  

cache.MaxPoolSize = 5;          

string cached_dt = cache.Get(key) as string;  

if (cached_dt == null)  

 {  

    //主体代码  

    string str_dt = DataTableXml.SerializeDataTableXml(ds.Tables[0]);  

    cache.Set(key, str_dt, 30);  

 }  

else  

{  

    ds.Tables.Add(DataTableXml.DeserializeDataTable(cached_dt));  

}  

（3）Asp.net Cache

[csharp] view plaincopy

if (HttpContext.Current.Cache[key]==null)  

{  

    //主体代码  

    HttpContext.Current.Cache.Insert(key, ds, null, DateTime.Now.AddSeconds(30), System.Web.Caching.Cache.NoSlidingExpiration);  

}  

else  

{  

    ds = (DataSet)HttpContext.Current.Cache[key];  

}  

三、测试工具与参数

ab -t 30 -c 50 192.168.0.226/t.aspx

说明：t.aspx页面读取Dataset 24次,for(int i=1;i<=24;i++)

四、结果

（1）Memcached

Requests per second:    293.53 [#/sec] (mean)

Time per request:       170.343 [ms] (mean)

（2）Asp.net Cache

Requests per second:    2408.06 [#/sec] (mean)

Time per request:       20.764 [ms] (mean)

五、结论

Memcached可能在对象序列化及网络上相对LocalCache性能损耗大很多！

 

 

引用：

Cache Type                Cache Gets/sec

 

Array Cache                       365000

APC Cache                          98000

File Cache                         27000

Memcached Cache (TCP/IP)           12200

MySQL Query Cache (TCP/IP)          9900

MySQL Query Cache (Unix Socket)    13500

Selecting from table (TCP/IP)       5100

Selecting from table (Unix Socket)  7400