MemcachedUI-一款基于.NET MVC编写的Memcached监控软件

一、起源

服务器上使用了Memcached做缓存加速，但是想查看Memcached状态的时候都只能telnet 127.0.0.1 11211 这样来查看，甚是累人，就想能不能做一款web端的软件，方便在PC and 手机上查看，所以就有了这一款软件(属于闲暇时光写的，如有不对，请指正)

二、安装Memcached And 新建Web项目

安装教程略过，因为网上有许多教程，如有不懂请留言问我吧，我电脑上安装了4个Memcached作为测试用

新建一个MVC的项目(其他也行，随自己)，并在Nuget上搜索安装包Memcached.ClientLibrary

三、主要代码演示与讲解

首先，我们新建一个类MemcachedHelper，代码如下

using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Web;
using Memcached.ClientLibrary;
using Newtonsoft.Json;

namespace MemcachedUI.Web.Models
{
    public class MemcachedHelper
    {
        private MemcachedClient _mc;

        public MemcachedHelper(string[] servers)
        {
            //初始化池
            SockIOPool pool = SockIOPool.GetInstance();
            pool.SetServers(servers);
            pool.InitConnections = ;
            pool.MinConnections = ;
            pool.MaxConnections = ;
            pool.SocketConnectTimeout = ;
            pool.SocketTimeout = ;
            pool.MaintenanceSleep = ;
            pool.Failover = true;
            pool.Nagle = false;
            pool.Initialize();
            _mc = new MemcachedClient { EnableCompression = false };
        }

        /// <summary>获取Memcached的状态
        ///
        /// </summary>
        /// <returns></returns>
        public Hashtable Stats()
        {
            return _mc.Stats();
        }

        /// <summary>获取设置的服务器集群
        ///
        /// </summary>
        /// <returns></returns>
        public static ServersModel GetServerList()
        {
            StreamReader sr = System.IO.File.OpenText(System.Web.HttpContext.Current.Server.MapPath("~/Config/Servers.json"));
            StringBuilder jsonArrayTextTmp = new StringBuilder();
            string input;
            while ((input = sr.ReadLine()) != null)
            {
                jsonArrayTextTmp.Append(input);
            }
            sr.Close();
            ServersModel model = JsonConvert.DeserializeObject<ServersModel>(jsonArrayTextTmp.ToString());
            return model;
        }
    }
}

Memcached的列表放在/Config/Servers.json文件中，这里是我本地的4个Memcached实例

{
  "Data": [
    {
      "ServerName": "本地服务器-1",
      "Address": "127.0.0.1:11211"
    },
    {
      "ServerName": "本地服务器-2",
      "Address": "127.0.0.1:11212"
    },
    {
      "ServerName": "本地服务器-3",
      "Address": "127.0.0.1:11213"
    },
    {
      "ServerName": "本地服务器-4",
      "Address": "127.0.0.1:11214"
    }
  ]
}

HomeController主要为展示页面

　　　　 public ActionResult Index()
        {
            var model = MemcachedHelper.GetServerList();
            string[] servers = model.Data.Select(t => t.Address).ToArray();

            ViewBag.ht = new MemcachedHelper(servers).Stats();
            ViewBag.ServerList = model;
            return View();
        }

        public ActionResult Node(string server)
        {
            ViewBag.ht = new MemcachedHelper(new string[] { server }).Stats();
            return View();
        }

首页集群页面代码如下

@{
    ViewBag.Title = "集群视图";
}
@using System.Collections;
@using MemcachedUI.Web.Models
<div class="row">
    @{
        ServersModel model = ViewBag.ServerList;
        Hashtable ht = (Hashtable)ViewBag.ht;
        foreach (DictionaryEntry de in ht)
        {
            Hashtable info = (Hashtable)de.Value;
            string servsername = de.Key.ToString();
            foreach (var datum in model.Data)
            {
                if (datum.Address == de.Key.ToString())
                {
                    servsername = datum.ServerName;
                    continue;
                }
            }
            <div class="col-md-3">
                <div class="panel panel-primary">
                    <div class="panel-heading" onclick="">
                        @Html.Raw(servsername)  概况
                    </div>
                    <div class="panel-body">
                        <div class="container-fluid">
                            <div><label>服务器进程ID</label>：@Html.Raw(info["pid"].ToString())</div>
                            <div><label>服务器运行时间</label>：@Html.Raw(info["uptime"].ToString())</div>
                            <div><label>服务器当前的UNIX 时间</label>：@Html.Raw(info["time"].ToString())</div>
                            <div><label>版本号</label>：@Html.Raw(info["version"].ToString())</div>
                            <div><label>服务器操作系统位数</label>：@Html.Raw(info["pointer_size"].ToString())</div>
                            <div><label>当前连接数</label>：@Html.Raw(info["curr_connections"].ToString())</div>
                            <div><label>总连接数</label>：@Html.Raw(info["total_connections"].ToString())</div>
                            <div><label>获取请求数量</label>：@Html.Raw(info["cmd_get"].ToString())</div>
                            <div><label>存储请求数量</label>：@Html.Raw(info["cmd_set"].ToString())</div>
                            <div><label>flush请求的数量</label>：@Html.Raw(info["cmd_flush"].ToString())</div>
                            <div><label>获取成功的总次数</label>：@Html.Raw(info["get_hits"].ToString())</div>
                            <div><label>获取失败的总次数</label>：@Html.Raw(info["get_misses"].ToString())</div>
                            <div><label>删除失败次数</label>：@Html.Raw(info["delete_misses"].ToString())</div>
                            <div><label>删除命中次数</label>：@Html.Raw(info["delete_hits"].ToString())</div>
                            <div><label>递增失败次数</label>：@Html.Raw(info["incr_misses"].ToString())</div>
                            <div><label>递增命中次数</label>：@Html.Raw(info["incr_hits"].ToString())</div>
                            <div><label>递减命中次数</label>：@Html.Raw(info["decr_misses"].ToString())</div>
                            <div><label>递减失败次数</label>：@Html.Raw(info["decr_hits"].ToString())</div>
                            <div><label>Cas 原子设置操作失败次数</label>：@Html.Raw(info["cas_misses"].ToString())</div>
                            <div><label>Cas 命中次数</label>：@Html.Raw(info["cas_hits"].ToString())</div>
                            <div><label>Cas 操作找到key, 但是版本过期，没有设置成功</label>：@Html.Raw(info["cas_badval"].ToString())</div>
                            <div><label>认证次数（包括成功和失败）</label>：@Html.Raw(info["auth_cmds"].ToString())</div>
                            <div><label>认证失败次数</label>：@Html.Raw(info["auth_errors"].ToString())</div>
                            <div><label>总共获取的数据量</label>：@Html.Raw(info["bytes_read"].ToString())</div>
                            <div><label>总写入数量数</label>：@Html.Raw(info["bytes_written"].ToString())</div>
                            <div><label>总允许写入的数据量</label>：@Html.Raw(info["limit_maxbytes"].ToString())</div>
                            <div><label>允许的总连接数</label>：@Html.Raw(info["accepting_conns"].ToString())</div>
                            <div><label>监听失败的次数</label>：@Html.Raw(info["listen_disabled_num"].ToString())</div>
                            <div><label>需要的工作线程数</label>：@Html.Raw(info["threads"].ToString())</div>
                            <div><label>conn_yields</label>：@Html.Raw(info["conn_yields"].ToString())</div>
                            <div><label>已用缓存空间</label>：@Html.Raw(info["bytes"].ToString())</div>
                            <div><label>当前缓存item数量</label>：@Html.Raw(info["curr_items"].ToString())</div>
                            <div><label>总的存储缓存item数量</label>：@Html.Raw(info["total_items"].ToString())</div>
                            <div><label>通过删除item释放内存的次数</label>：@Html.Raw(info["evictions"].ToString())</div>
                        </div>
                    </div>
                </div>
            </div>
        }

    }

</div>

运行截图

四、后语

本文只是简单的将各个属性代表的意思给读取出来，大家可以根据自己的要求修改，如添加命中率等

闲暇时间写的，如有不对，请指正，谢谢