Memcached flush_all 命令用于从Memcached服务器中删除所有数据(键值对).它接受一个名为 time 的可选参数,用于设置清除Memcached数据的时间.
Memcached flush_all 命令的基本语法如下所示 :
flush_all [time] [noreply]
以上命令始终返回OK.
以下例如,我们将一些数据存储到Memcached服务器中,然后清除所有数据.
set it1352 0 900 9 memcached STORED get it1352 VALUE it1352 0 9 memcached END flush_all OK get it1352 END
要清除Memcached服务器中的数据,需要使用Memcached flush 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,你会到达请参阅以下输出 :
Connection to server successfully set status:true Get from Cache:5 Increment value:7 Decrement value:6 Get from Cache:6 Clear data:true