緩存技術內部交流_02_Ehcache3 XML 配置

參考資料：
http://www.ehcache.org/documentation/3.2/getting-started.html#configuring-with-xml
http://www.ehcache.org/documentation/3.2/xml.html

示例代碼：
https://github.com/gordonklg/study，cache module

A. 實例

gordon.study.cache.ehcache3.basic.XmlConfig.java

public class XmlConfig {
 
    public static void main(String[] args) {
        final URL myUrl = XmlConfig.class.getResource("/ehcache3_basic.xml");
        Configuration xmlConfig = new XmlConfiguration(myUrl);
        CacheManager cacheManager = CacheManagerBuilder.newCacheManager(xmlConfig);
        cacheManager.init();
        Cache<String, UserModel> phoneUserCache = cacheManager.getCache("phoneUserCache", String.class, UserModel.class);
        UserModel user = new UserModel("13316619988", "[e-mail]", "openid12345", "very very long user information ...");
        phoneUserCache.put(user.getPhone(), user);
        UserModel cached = phoneUserCache.get(user.getPhone());
        System.out.println(cached.getInfo());
    }
}

示例代碼簡單明了，沒啥好說的。

ehcache3_basic.xml in src/main/resources

<?xml version="1.0" encoding="UTF-8"?>
<config xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'
    xmlns='http://www.ehcache.org/v3' xmlns:jsr107='http://www.ehcache.org/v3/jsr107'
    xsi:schemaLocation="
        http://www.ehcache.org/v3 http://www.ehcache.org/schema/ehcache-core-3.2.xsd
        http://www.ehcache.org/v3/jsr107 http://www.ehcache.org/schema/ehcache-107-ext-3.2.xsd">
 
    <cache-template name="userTemplate">
        <key-type>java.lang.String</key-type>
        <value-type>gordon.study.cache.ehcache3.basic.UserModel</value-type>
        <heap unit="entries">5</heap>
    </cache-template>
 
    <cache alias="phoneUserCache" uses-template="userTemplate">
        <heap unit="entries">20</heap>
    </cache>
 
    <cache alias="emailUserCache" uses-template="userTemplate" />
</config>

配置文件同樣簡單明了。其中 cache-template 為緩存模板，可以簡化配置。