使用MongoDB存储访问者信息
网站的访问者信息的存储一般都是海量的,通常使用关系数据库,现在NoSQL运动火热,满足这样的需求使用NoSQL数据库会更好,网站访问者信息主要是两个功能:
1、记录下网站的访问者信息
2、查询访问者信息和做相关的数据分析
本文采用MongoDB来记录访问者的信息的示例:
在asp.net中记录访问者信息的方法可以通过一个HttpHandler,在页面上放一个1像素的图片来请求这个HttpHandler,把他放到MasterPage页面就可以了。
下面给出ashx的代码
1: public class a : IHttpHandler
   2: {
    3: public void ProcessRequest(HttpContext ctx)
   4:     {
       5:         HttpBrowserCapabilities bc = ctx.Request.Browser;
    6: Stat stat = new Stat();
   7:         stat._id = Guid.NewGuid();
       8:         stat.Browser = bc.Browser;
       9:         stat.Type = bc.Type;
      10:         stat.Version = bc.Version;
      11:         stat.Platform = bc.Platform;
      12:         stat.UrlReferrer = ctx.Request.UrlReferrer.ToString();
      13:         stat.UserHostAddress = ctx.Request.UserHostAddress;
      14:         stat.HttpMethod = ctx.Request.HttpMethod;
      15:         stat.IsAuthenticated = ctx.Request.IsAuthenticated;
      16:         stat.LogDateTime = DateTime.Now.ToLocalTime();
      17:  
    18: WebClient wc=new WebClient();
19: try
  20:         {
    21: string s =
22: wc.DownloadString("http://ipinfodb.com/ip_query.php?ip=" + stat.UserHostAddress + "&output=xml");
23: XmlDocument doc = new XmlDocument();
  24:             doc.LoadXml(s);
    25: stat.Country = doc.DocumentElement.SelectNodes("CountryCode")[0].InnerText;
26: stat.State = doc.DocumentElement.SelectNodes("RegionName")[0].InnerText;
  27:  
    28: stat.City = doc.DocumentElement.SelectNodes("City")[0].InnerText;
29: stat.Latitude = doc.DocumentElement.SelectNodes("Latitude")[0].InnerText;
30: stat.Longitude = doc.DocumentElement.SelectNodes("Longitude")[0].InnerText;
  31:             
      32:         }
    33: catch(Exception ex)
  34:         {
      35:             System.Diagnostics.Debug.WriteLine(ex.Message+ ex.StackTrace );
      36:         }
    37: finally
  38:         {
      39:             wc.Dispose();
      40:         }
    41: using (Mongo mongo = Mongo.Create(Helper.ConnectionString() ))
  42:         {
      43:             MongoCollection<Stat> coll = (MongoCollection<Stat>)mongo.GetCollection<Stat>();
      44:             coll.Save(stat);
      45:         }
      46:        
    47: string sFileName = String.Empty;
48: string sPath = ctx.Server.MapPath(".");
49: try
  50:         {
    51: sFileName = ctx.Request["name"].ToString().Trim();
52: if (sFileName.Length < 5) { return; } // must be at least "1.gif" (5 chars)
53: // serve the image that was requested:
  54:             ctx.Response.WriteFile(sPath + @"\" +  sFileName);
      55:         }
    56: catch (Exception e)
  57:         {
      58:  
      59:             ctx.Response.Write(e.Message);
      60:         }
      61:     }
    62: public bool IsReusable { get { return true; } }
  63: }
上面代码使用到了HttpBrowserCapabilities,这里可以得到客户端的浏览器信息。还有客户端ip的来源使用到了ipinfodb.com这个服务,IPinfoDB网站非常的慷慨,慷慨到让人惊讶的程度,除了提供给你XML API和JSON API调用外,还提供了实现这些API的source code和所有的IP数据库,也就是说你只要下载这份code和database你也可以架设一个和IPinfoDB一样的网站,一样能够提供API服务,不过国外做的IP数据库对国内来说肯定不是很全很准,不过先将就着用吧。
访问访问者信息的MongoDB的信息记录:
   1: [Serializable]
    2: public class Stat
   3: {
       4: [MongoIdentifier]
    5: public Guid _id {get;set;}
6: public string Type {get;set;}
7: public string Browser {get;set;}
8: public string Version {get;set;}
9: public string Platform {get;set;}
10: public string UrlReferrer {get;set;}
11: public string UserHostAddress {get;set;}
12: public bool IsAuthenticated {get;set;}
13: public string HttpMethod {get;set;}
14: public DateTime LogDateTime { get; set; }
15: public string City { get; set; }
16: public string State { get; set;}
17: public string Country { get; set; }
18: public string Latitude { get; set; }
19: public string Longitude { get; set; }
  20: }
然后利用MongoDB的C# NORm驱动记录到MongoDB。
相关文章:
http://www.cnblogs.com/shanyou/archive/2010/06/04/1751734.html
http://www.eggheadcafe.com/tutorials/aspnet/63de8012-127a-4478-8725-3e1c27969596/nosql-mongodb-install-lotus-notes-and-couchdb.aspx
  
http://www.eggheadcafe.com/tutorials/aspnet/51d3ae19-d6f9-4807-ac0a-0baab2964b03/mongodb-install-as-service-and-use-net-drivers.aspx
  
http://www.eggheadcafe.com/tutorials/aspnet/93206c89-09c9-40fc-9296-7d74bb7996ad/a-mongodb-cache-utility.aspx
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