Java中memcached的cache机制

<dependency>
    <groupId>net.spy</groupId>
    <artifactId>spymemcached</artifactId>
    <version>2.12.3</version> <!-- 请根据最新版本进行替换 -->
</dependency>

import net.spy.memcached.MemcachedClient;
import net.spy.memcached.AddrUtil;
import net.spy.memcached.MemcachedClientIF;
import java.net.InetSocketAddress;
import java.util.concurrent.Future;
public class MemcachedCacheExample {
    public static void main(String[] args) {
        try {
            // 连接到本地Memcached服务器，端口默认为11211
            MemcachedClientIF memcachedClient = new MemcachedClient(new InetSocketAddress("localhost", 11211));
            // 缓存的键值对
            String key = "example_key";
            String value = "Hello, Memcached!";
            // 将数据存入缓存，缓存过期时间为60秒
            Future<Boolean> setResult = memcachedClient.set(key, 60, value);
            System.out.println("Set Result: " + setResult.get());
            // 从缓存中获取数据
            Object cachedValue = memcachedClient.get(key);
            System.out.println("Cached Value: " + cachedValue);
            // 等待一段时间，使缓存过期
            Thread.sleep(60000);
            // 再次尝试获取数据
            Object expiredValue = memcachedClient.get(key);
            System.out.println("Expired Value: " + expiredValue);
            // 关闭连接
            memcachedClient.shutdown();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}