/* * Copyright 1999-2012 Alibaba Group. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.alibaba.dubbo.examples.cache; import org.springframework.context.support.ClassPathXmlApplicationContext; import com.alibaba.dubbo.examples.cache.api.CacheService; /** * CacheConsumer * * @author william.liangf */ public class CacheConsumer { public static void main(String[] args) throws Exception { String config = CacheConsumer.class.getPackage().getName().replace('.', '/') + "/cache-consumer.xml"; ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(config); context.start(); CacheService cacheService = (CacheService)context.getBean("cacheService"); // 测试缓存生效,多次调用返回同样的结果。(服务器端自增长返回值) String fix = null; for (int i = 0; i < 5; i ++) { String result = cacheService.findCache("0"); if (fix == null || fix.equals(result)) { System.out.println("OK: " + result); } else { System.err.println("ERROR: " + result); } fix = result; Thread.sleep(500); } // LRU的缺省cache.size为1000,执行1001次,应有溢出 for (int n = 0; n < 1001; n ++) { String pre = null; for (int i = 0; i < 10; i ++) { String result = cacheService.findCache(String.valueOf(n)); if (pre != null && ! pre.equals(result)) { System.err.println("ERROR: " + result); } pre = result; } } // 测试LRU有移除最开始的一个缓存项 String result = cacheService.findCache("0"); if (fix != null && ! fix.equals(result)) { System.out.println("OK: " + result); } else { System.err.println("ERROR: " + result); } } }