. Net/C # memcached get all cache keys (keys)

Use Components

Memcached 1.2.6

. Net class library memcacheddotnet_clientlib-1.1.5

1. Add memcacheddotnet_clientlib-1.1.5 code

Download the component, open the. NET class library memcacheddotnet_clientlib-1.1.5 with vs, open memcachedclient. CS, add the following method:

public Hashtable Stats(ArrayList servers, string command)        {            // get SockIOPool instance            SockIOPool pool = SockIOPool.GetInstance(_poolName);            // return false if unable to get SockIO obj            if (pool == null)            {                //if(log.IsErrorEnabled)                //{                //    log.Error(GetLocalizedString("unable to get socket pool"));                //}                return null;            }            // get all servers and iterate over them            if (servers == null)                servers = pool.Servers;            // if no servers, then return early            if (servers == null || servers.Count <= 0)            {                //if(log.IsErrorEnabled)                //{                //    log.Error(GetLocalizedString("stats no servers"));                //}                return null;            }            // array of stats Hashtables            Hashtable statsMaps = new Hashtable();            for (int i = 0; i < servers.Count; i++)            {                SockIO sock = pool.GetConnection((string)servers[i]);                if (sock == null)                {                    //if(log.IsErrorEnabled)                    //{                    //    log.Error(GetLocalizedString("unable to connect").Replace("$$Server$$", servers[i].ToString()));                    //}                    continue;                }                // build command                if (command == null || command.Length == 0)                {                    command = "stats\r\n";                }                else                {                    command = command + "\r\n";                }                try                {                    sock.Write(UTF8Encoding.UTF8.GetBytes(command));                    sock.Flush();                    // map to hold key value pairs                    Hashtable stats = new Hashtable();                    // loop over results                    while (true)                    {                        string line = sock.ReadLine();                        //if(log.IsDebugEnabled)                        //{                        //    log.Debug(GetLocalizedString("stats line").Replace("$$Line$$", line));                        //}                        if (line.StartsWith(STATS))                        {                            string[] info = line.Split(' ');                            string key = info[1];                            string val = info[2];                            //if(log.IsDebugEnabled)                            //{                            //    log.Debug(GetLocalizedString("stats success").Replace("$$Key$$", key).Replace("$$Value$$", val));                            //}                            stats[key] = val;                        }                        else if (line.StartsWith("ITEM"))                        {                                                        string[] info = line.Split('[');                            string key = info[0].Split(' ')[1];                            string val = "[" + info[1];                            stats[key] = val;                        }                        else if (END == line)                        {                            // finish when we get end from server                            //if(log.IsDebugEnabled)                            //{                            //    log.Debug(GetLocalizedString("stats finished"));                            //}                            break;                        }                        statsMaps[servers[i]] = stats;                    }                }                catch//(IOException e)                 {                    //if(log.IsErrorEnabled)                    //{                    //    log.Error(GetLocalizedString("stats IOException"), e);                    //}                    try                    {                        sock.TrueClose();                    }                    catch//(IOException)                     {                        //if(log.IsErrorEnabled)                        //{                        //    log.Error(GetLocalizedString("failed to close some socket").Replace("$$Socket$$", sock.ToString()));                        //}                    }                    sock = null;                }                if (sock != null)                    sock.Close();            }            return statsMaps;        }

2. Read this article http://www.cnblogs.com/daizhj/archive/2009/03/23/1386652.html

The getstats method is available in this article. modify it as follows:

/// <Summary> /// obtain the server-side cached data // </Summary> /// <Param name = "serverarraylist"> list of services to be accessed </param> /// <Param name = "statscommand"> the function of this parameter is temporarily invalid </param> /// <Param name = "Param"> the function of this parameter is temporarily invalid </param> // <returns> returned information </returns> Public static ilist <string> getstats (ilist <string> serverarraylist, memcachedstats statscommand, string PARAM) {ilist <string> statsarray = new list <string> (); If (Param = NULL) Param = ""; else {Param = Param. trim (). tolower ();} string commandstr = "stats"; // convert the stats command parameter switch (statscommand) {Case memcachedstats. reset: {commandstr = "stats RESET"; break;} case memcachedstats. malloc: {commandstr = "stats malloc"; break;} case memcachedstats. maps: {commandstr = "stats maps"; break;} case memcachedstats. sizes: {commandstr = "stats sizes"; break;} case memcachedstats. slabs: {commandstr = "stats slabs"; break;} case memcachedstats. items: {commandstr = "stats items"; break;} // originally returned stats case memcachedstats. cacheddump: {string [] statsparams = Param. split (''); If (statsparams. length = 2) if (Param. isintarr ('') // utils. isnumericarray (statsparams) commandstr = "stats cachedump" + Param; break;} case memcachedstats. detail: {If (string. equals (Param, "on") | string. equals (Param, "off") | string. equals (Param, "dump") commandstr = "stats detail" + Param. trim (); break;} default: {commandstr = "stats"; break;} arraylist arr = new arraylist (serverarraylist. toarray (); hashtable stats = memcachedmanager. cacheclient. stats (ARR, commandstr); foreach (string key in stats. keys) {statsarray. add ("server :__:" + key); // hashtable values = (hashtable) stats [Key]; foreach (string key2 in values. keys) {statsarray. add (key2 + ":" + values [key2]) ;}} return statsarray ;}

3. Add the following method.

/// <Summary> /// obtain all cache keys /// </Summary> /// <returns> </returns> Public static ilist <string> getallkeys () {ilist <int> idlist = new list <int> (); ilist <string> List = memcachedmanager. getstats (memcachedmanager. serverlist, memcachedstats. items, null); foreach (VAR item in list) {string [] tmparr = item. split (':'); If (tmparr. length> 1) {int Itemid = 0; If (tmparr [1] = "_") continue; Int. tryparse (Tmparr [1], out Itemid); If (Itemid <= 0) continue; bool find = false; foreach (INT Item1 in idlist) {If (Item1 = Itemid) {find = true; break ;}} if (! Find) {idlist. add (Itemid) ;}}} ilist <string> keys = new list <string> (); foreach (INT item in idlist) {ilist <string> cachearr = memcachedmanager. getstats (memcachedmanager. serverlist, memcachedstats. cacheddump, item + "0"); foreach (string itemcache in cachearr) {string [] tmparr = itemcache. split (':'); If (tmparr. length> 1) {If (tmparr [1] = "_") {continue;} Keys. add (tmparr [0]) ;}} return keys ;}

Call Method

IList<string> list = MemcachedManager.GetAllKeys();            foreach (var item in list)            {                Response.Write(item + "<br />");            }