如何在不使用xml的情况下使用Spring Boot 2和ehcache 3?
现在,我有以下配置:
@Configuration@EnableCaching
public class EhcacheConfig {
@Bean
public CacheManager cacheManager() throws URISyntaxException {
return new JCacheCacheManager(Caching.getCachingProvider().getCacheManager(
getClass().getResource("/ehcache.xml").toURI(),
getClass().getClassLoader()
));
}
}
它引用以下XML:
<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-3.0.xsd
http://www.ehcache.org/v3/jsr107 http://www.ehcache.org/schema/ehcache-107-ext-3.0.xsd">
<cache alias="pow_cache">
<key-type>org.springframework.cache.interceptor.SimpleKey</key-type>
<value-type>java.lang.Double</value-type>
<expiry>
<ttl unit="seconds">15</ttl>
</expiry>
<listeners>
<listener>
<class>my.pack.CacheEventLogger</class>
<event-firing-mode>ASYNCHRONOUS</event-firing-mode>
<event-ordering-mode>UNORDERED</event-ordering-mode>
<events-to-fire-on>CREATED</events-to-fire-on>
<events-to-fire-on>EXPIRED</events-to-fire-on>
</listener>
</listeners>
<resources>
<heap unit="entries">2</heap>
<offheap unit="MB">10</offheap>
</resources>
</cache>
</config>
服务看起来像这样:
@Cacheable(value = "pow_cache", unless = "#pow==3||#result>100", condition = "#val<5")public Double pow(int val, int pow) throws InterruptedException {
System.out.println(String.format("REAL invocation myService.pow(%s, %s)", val, pow));
Thread.sleep(3000);
return Math.pow(val, pow);
}
它可以正常工作,但我想摆脱xml配置。
2,但我将使用Eehcache 3
我该如何实现?
回答:
由于EhCache
似乎符合JSR-107,因此您需要以这种方式使用它来进行程序配置:
@Beanpublic CacheManager cacheManager() throws URISyntaxException {
CachingProvider provider = Caching.getCachingProvider();
CacheManager cacheManager = provider.getCacheManager();
CacheConfigurationBuilder<SimpleKey, Double> configuration =
CacheConfigurationBuilder.newCacheConfigurationBuilder(org.springframework.cache.interceptor.SimpleKey.class,
java.lang.Double.class,
ResourcePoolsBuilder.heap(2).offheap(10, MemoryUnit.MB))
.withExpiry(Expirations.timeToLiveExpiration(new Duration(15, TimeUnit.SECONDS)));
Cache cache = cacheManager.createCache("pow_cache", configuration);
cache.getRuntimeConfiguration().registerCacheEventListener(listener, EventOrdering.UNORDERED,
EventFiring.ASYNCHRONOUS, EnumSet.of(EventType.CREATED, EventType.EXPIRED));
return cacheManager;
}
我自己还没有测试过,但这应该对您有用。
从EhCache存储库中查看更多带有配置选项的程序示例,以及有关如何以编程方式注册侦听器的文档部分。
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