Memcached基础入门和Java操作Memcached实现增删改查

淩亂°似流年 2021-09-26 01:30 362阅读 0赞

1.下载Memcached

*  32位系统 1.2.5版本：[http://static.runoob.com/download/memcached-1.2.5-win32-bin.zip][http_static.runoob.com_download_memcached-1.2.5-win32-bin.zip]
 *  32位系统 1.2.6版本：[http://static.runoob.com/download/memcached-1.2.6-win32-bin.zip][http_static.runoob.com_download_memcached-1.2.6-win32-bin.zip]
 *  32位系统 1.4.4版本：[http://static.runoob.com/download/memcached-win32-1.4.4-14.zip][http_static.runoob.com_download_memcached-win32-1.4.4-14.zip]
 *  64位系统 1.4.4版本：[http://static.runoob.com/download/memcached-win64-1.4.4-14.zip][http_static.runoob.com_download_memcached-win64-1.4.4-14.zip]
 *  32位系统 1.4.5版本：[http://static.runoob.com/download/memcached-1.4.5-x86.zip][http_static.runoob.com_download_memcached-1.4.5-x86.zip]
 *  64位系统 1.4.5版本：[http://static.runoob.com/download/memcached-1.4.5-amd64.zip][http_static.runoob.com_download_memcached-1.4.5-amd64.zip]

2.解压下载好的文件到指定目录

3.安装Memcached，以管理员的权限运行命令：

c:\\memcached\\memcached.exe -d install

4.安装完成之后，启动/停止Memcached，以管理员权限运行以下命令：

c:\\memcached\\memcached.exe -d start  
c:\\memcached\\memcached.exe -d stop

5.下载jar 包，下载地址：[spymemcached-2.10.3.jar][]。将下载好的Jar添加到项目中去。

6.测试连接到Memcached

//连接到Memcached  
    protected static MemcachedClient connect() \{  
        MemcachedClient mcc = null;  
        try \{  
            // 本地连接 Memcached 服务  
            mcc = new MemcachedClient(new InetSocketAddress("127.0.0.1", 11211));  
        \} catch (IOException e) \{  
            e.printStackTrace();  
        \}  
        return mcc;  
    \}

7.Java操作Memcached实现增删改查：

//save  
    public void save() \{  
        try \{  
  
            MemcachedClient mcc = connect();  
  
            // 存储数据  
            Future fo = mcc.add("memcached", 900, "Memcached");  
  
            // 输出值  
            System.out.println("Memcached value in cache - " + mcc.get("memcached"));  
  
            fo = mcc.add("test", 900, "test\_1");  
  
            // 输出值  
            System.out.println("test value in cache - " + mcc.get("memcached"));  
            // 关闭连接  
            mcc.shutdown();  
  
        \} catch (Exception ex) \{  
            System.out.println(ex.getMessage());  
        \}  
    \}  
  
    //find  
    public void find() \{  
        try \{  
  
            MemcachedClient mcc = connect();  
  
            // 存储数据  
            Future fo = mcc.add("memcached", 900, "Memcached");  
  
            // 输出值  
            System.out.println("Memcached value in cache - " + mcc.get("memcached"));  
  
            fo = mcc.add("test", 900, "test\_1");  
  
            // 输出值  
            System.out.println("test value in cache - " + mcc.get("memcached"));  
            // 关闭连接  
            mcc.shutdown();  
  
        \} catch (Exception ex) \{  
            System.out.println(ex.getMessage());  
        \}  
    \}  
  
    //update  
    public void update() \{  
        try \{  
  
            MemcachedClient mcc = connect();  
  
            // 存储数据  
            Future fo = mcc.add("memcached", 900, "Memcached");  
  
            // 输出值  
            System.out.println("Memcached value in cache - " + mcc.get("memcached"));  
  
            fo = mcc.replace("memcached", 900, "memcached\_new");  
  
            // 输出值  
            System.out.println("memcached\_new value in cache - " + mcc.get("memcached"));  
            // 关闭连接  
            mcc.shutdown();  
  
        \} catch (Exception ex) \{  
            System.out.println(ex.getMessage());  
        \}  
    \}  
  
    //delete  
    public void del() \{  
        try \{  
  
            MemcachedClient mcc = connect();  
  
            // 存储数据  
            Future fo = mcc.add("memcached\_new", 900, "Memcached");  
  
            // 输出值  
            System.out.println("Memcached value in cache - " + mcc.get("memcached\_new"));  
  
            fo = mcc.delete("memcached\_new");  
            // 关闭连接  
            mcc.shutdown();  
  
        \} catch (Exception ex) \{  
            System.out.println(ex.getMessage());  
        \}  
    \}

8.Memcached其它存储命令操作

//append  
    public void append() \{  
        try \{  
  
            MemcachedClient mcc = connect();  
  
            // 存储数据  
            Future fo = mcc.set("test\_append", 900, "Append");  
  
            // 输出值  
            System.out.println("Append value in cache - " + mcc.get("test\_append"));  
  
            fo  = mcc.append("append","append\_1");  
  
            // 输出值  
            System.out.println("append\_1 value in cache - " + mcc.get("append"));  
            // 关闭连接  
            mcc.shutdown();  
  
        \} catch (Exception ex) \{  
            System.out.println(ex.getMessage());  
        \}  
    \}  
      
    //prepend  
    public void prepend() \{  
        try \{  
  
            MemcachedClient mcc = connect();  
  
            // 存储数据  
            Future fo = mcc.set("test\_prepend", 900, "Prepend");  
  
            // 输出值  
            System.out.println("Prepend value in cache - " + mcc.get("test\_prepend"));  
  
            fo  = mcc.prepend("prepend","prepend\_1");  
  
            // 输出值  
            System.out.println("prepend\_1 value in cache - " + mcc.get("prepend"));  
            // 关闭连接  
            mcc.shutdown();  
  
        \} catch (Exception ex) \{  
            System.out.println(ex.getMessage());  
        \}  
    \}  
      
    //cas  
    public void cas() \{  
        try \{  
  
            MemcachedClient mcc = connect();  
  
            // 存储数据  
            Future fo = mcc.set("test\_cas", 900, "CAS");  
  
            // 输出值  
            System.out.println("CAS value in cache - " + mcc.get("test\_cas"));  
  
            CASValue   cas =  mcc.gets("test\_cas");  
            System.out.println("cas value---"+cas.getCas());  
              
            // 关闭连接  
            mcc.shutdown();  
  
        \} catch (Exception ex) \{  
            System.out.println(ex.getMessage());  
        \}  
    \}

9.Memcached查找命令：  
  
get memcached\_new  
get memcached,memcached\_new,test\_append  
  
gets memcached\_new  
gets memcached,memcached\_new,test\_append  
  
delete memcached  
  
key memcached初始值为10,使用incr之后key memcached 值变成15  
set memcached  900 10  
incr memcached 5  
  
  
key memcached初始值为10,使用decr之后key memcached 值变成5  
set memcached  900 10  
decr memcached 5  
  
  
10.Memcached统计命令：  
  
stat xxx  
  
stat items xxx  
  
stat 1:xxx  
  
stat xx xx  
  
set memcached  900 10  
flush\_all

[http_static.runoob.com_download_memcached-1.2.5-win32-bin.zip]: http://static.runoob.com/download/memcached-1.2.5-win32-bin.zip
[http_static.runoob.com_download_memcached-1.2.6-win32-bin.zip]: http://static.runoob.com/download/memcached-1.2.6-win32-bin.zip
[http_static.runoob.com_download_memcached-win32-1.4.4-14.zip]: http://static.runoob.com/download/memcached-win32-1.4.4-14.zip
[http_static.runoob.com_download_memcached-win64-1.4.4-14.zip]: http://static.runoob.com/download/memcached-win64-1.4.4-14.zip
[http_static.runoob.com_download_memcached-1.4.5-x86.zip]: http://static.runoob.com/download/memcached-1.4.5-x86.zip
[http_static.runoob.com_download_memcached-1.4.5-amd64.zip]: http://static.runoob.com/download/memcached-1.4.5-amd64.zip
[spymemcached-2.10.3.jar]: http://www.runoob.com/try/download/spymemcached-2.10.3.jar