Memcached 删除键
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Telnet删除键
Memcached delete命令用于从Memcached服务器删除现有键。Memcached delete命令的基本语法如下所示-delete key [noreply]
返回- DELETED - 表示删除成功。
- ERROR - 表示删除数据时出错或语法错误。
- NOT_FOUND - 表示该密钥在Memcached服务器中不存在。
在此示例中,我们将 jc2182 用作密钥,并将memcached存储在其中,有效时间为900秒。此后,它将删除存储的密钥。set jc2182 0 900 9 memcached STORED get jc2182 VALUE jc2182 0 9 memcached END delete jc2182 DELETED get jc2182 END delete jc2182 NOT_FOUND
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使用Java应用程序删除键
要在Memcached服务器中删除键,您需要使用Memcached delete方法。import java.io.IOException; import java.net.InetSocketAddress; import net.spy.memcached.MemcachedClient; public class MemcachedJava { public static void main(String[] args) { // Connecting to Memcached server on localhost MemcachedClient mcc = null; try { mcc = new MemcachedClient(new InetSocketAddress("127.0.0.1", 11211)); } catch (IOException e) { // TODO 自动生成的 catch 块 e.printStackTrace(); } System.out.println("Connection to server sucessfully"); // 设置数据库 第一个参数key 第二个参数过期时间,第三个参数value System.out.println("set status:" + mcc.set("jc2182", 900, "memcachd").getStatus()); System.out.println("Get from Cache:" + mcc.get("jc2182")); System.out.println("Delete Key " + mcc.delete("jc2182").getStatus()); System.out.println("Get from Cache:" + mcc.get("jc2182")); } }
输出Connection to server sucessfully set status:{OperationStatus success=true: STORED} Get from Cache:memcachd Delete Key {OperationStatus success=true: DELETED} Get from Cache:null