📅  最后修改于: 2020-11-27 05:47:05             🧑  作者: Mango
Memcached flush_all命令用于从Memcached服务器删除所有数据(键值对)。它接受一个称为时间的可选参数,该参数设置一个时间,该时间之后将清除Memcached数据。
Memcached flush_all命令的基本语法如下所示-
flush_all [time] [noreply]
上面的命令总是返回OK。
在以下示例中,我们将一些数据存储到Memcached服务器中,然后清除所有数据。
set tutorialspoint 0 900 9
memcached
STORED
get tutorialspoint
VALUE tutorialspoint 0 9
memcached
END
flush_all
OK
get tutorialspoint
END
要从Memcached服务器清除数据,您需要使用Memcached刷新方法。
import net.spy.memcached.MemcachedClient;
public class MemcachedJava {
public static void main(String[] args) {
// Connecting to Memcached server on localhost
MemcachedClient mcc = new MemcachedClient(new
InetSocketAddress("127.0.0.1", 11211));
System.out.println("Connection to server sucessfully");
System.out.println("set status:"+mcc.set("count", 900, "5").isDone());
// Get value from cache
System.out.println("Get from Cache:"+mcc.get("count"));
// now increase the stored value
System.out.println("Increment value:"+mcc.incr("count", 2));
// now decrease the stored value
System.out.println("Decrement value:"+mcc.decr("count", 1));
// now get the final stored value
System.out.println("Get from Cache:"+mcc.get("count"));
// now clear all this data
System.out.println("Clear data:"+mcc.flush().isDone());
}
}
在编译和执行程序时,您将看到以下输出-
Connection to server successfully
set status:true
Get from Cache:5
Increment value:7
Decrement value:6
Get from Cache:6
Clear data:true