com.github.mengweijin.quickboot.framework.cache.QuickBootCacheAutoConfiguration Maven / Gradle / Ivy
package com.github.mengweijin.quickboot.framework.cache;
import org.ehcache.CacheManager;
import org.ehcache.config.CacheConfiguration;
import org.ehcache.config.builders.CacheConfigurationBuilder;
import org.ehcache.config.builders.CacheManagerBuilder;
import org.ehcache.config.builders.ExpiryPolicyBuilder;
import org.ehcache.config.builders.ResourcePoolsBuilder;
import org.ehcache.config.units.EntryUnit;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import java.io.Serializable;
import java.time.Duration;
/**
* @author Meng Wei Jin
* @description EnableCaching 开启缓存
**/
@Configuration
@EnableCaching
public class QuickBootCacheAutoConfiguration {
public static final String DEFAULT_CACHE_ALIAS = "defaultCache";
/**
* EhCache缓存管理器
* 手动放入/取出缓存：
* Cache cache = ehCacheManager.getCache(DEFAULT_CACHE_ALIAS, Serializable.class, Serializable.class);
* 放入：cache.put("a", "b");
* 取出：cache.get("a");
*
* @return
*/
@Bean
@ConditionalOnMissingBean
public CacheManager ehCacheManager() {
// EhCacheManager管理缓存
return CacheManagerBuilder.newCacheManagerBuilder()
// 设置一个默认缓存配置
.withCache(DEFAULT_CACHE_ALIAS, defaultCacheConfiguration())
// 硬盘持久化地址
//.with(CacheManagerBuilder.persistence(Const.JAVA_TMP_PATH))
// 初始化CacheManager 传入true初始化；或者通过cacheManager.init();方法初始化
.build(true);
}
/**
* 默认缓存配置属性
*
* @return
*/
private CacheConfiguration defaultCacheConfiguration() {
return CacheConfigurationBuilder.newCacheConfigurationBuilder(
// 缓存数据K和V的数值类型，在ehcache3.3中必须指定缓存键值类型,如果使用中类型与配置的不同,会报类转换异常
Serializable.class,
// V：需要实现Serializable接口
Serializable.class,
ResourcePoolsBuilder.newResourcePoolsBuilder()
// 设置缓存堆容纳元素个数(JVM内存空间)超出个数后会存到offheap中
.heap(1000L, EntryUnit.ENTRIES)
// 设置堆外储存大小(内存存储) 超出offheap的大小会淘汰规则被淘汰，数值大小必须小于磁盘配置的大小
//.offheap(50L, MemoryUnit.MB)
// 配置磁盘持久化储存(硬盘存储)用来持久化到磁盘,这里设置为false不启用
//.disk(100L, MemoryUnit.MB, false)
)
// 数据最大存活时间
.withExpiry(ExpiryPolicyBuilder.timeToLiveExpiration(Duration.ofMinutes(10L)))
// 数据最大空闲时间
.withExpiry(ExpiryPolicyBuilder.timeToIdleExpiration(Duration.ofMinutes(10L)))
.build();
}
}