SpringCloud+Ehcache

最新推荐文章于 2022-03-23 14:25:01 发布

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最新推荐文章于 2022-03-23 14:25:01 发布

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文章标签： java 运维

原文链接：http://www.cnblogs.com/wangymd/p/11170380.html

本文主要介绍Java中Ehcache缓存的配置与使用。包括在pom文件中引入依赖，分别阐述磁盘存储、堆存储的缓存大小和类型设置，以及缓存超时设置等内容，还给出了创建缓存管理器和缓存的代码示例。

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1、pom文件引入

<dependency>
<groupId>org.ehcache</groupId>
<artifactId>ehcache</artifactId>
<version>3.7.0</version>
</dependency>

2、磁盘存储

@Bean("cacheManager")
public CacheManager cacheManager() {
//缓存大小设置:磁盘
ResourcePoolsBuilder cacheSize = ResourcePoolsBuilder.newResourcePoolsBuilder().disk(1, MemoryUnit.GB);
//缓存类型设置
CacheConfigurationBuilder<String, String> cacheConfigurationBuilder = CacheConfigurationBuilder.newCacheConfigurationBuilder(String.class, String.class, cacheSize);
//创建缓存管理器
CacheManager cacheManager = CacheManagerBuilder.newCacheManagerBuilder()
.with(CacheManagerBuilder.persistence(new File(getStoragePath(), "askbob")))//设置存储位置
.withCache("askbob", cacheConfigurationBuilder).build(true);//初始化，或cacheManager.init();
return cacheManager;
}
//设置磁盘路径
private String getStoragePath() {
ApplicationHome applicationHome = new ApplicationHome(getClass());
File file = applicationHome.getDir();
return file.toString();
}

3、堆存储

@Bean("cacheManager")
public CacheManager cacheManager() {
//缓存大小设置:堆
ResourcePoolsBuilder cacheSize = ResourcePoolsBuilder.newResourcePoolsBuilder().heap(1, EntryUnit.ENTRIES).offheap(1, MemoryUnit.GB);
//缓存类型设置
CacheConfigurationBuilder<String, String> cacheConfigurationBuilder = CacheConfigurationBuilder.newCacheConfigurationBuilder(String.class, String.class, cacheSize);
//创建缓存管理器
CacheManager cacheManager = CacheManagerBuilder.newCacheManagerBuilder()
.withCache("askbob", cacheConfigurationBuilder).build(true);//初始化或cacheManager.init();
return cacheManager;
}

@Bean("ehcache")
public Cache<String, String> createCache() {
CacheManager cacheManager = cacheManager();
Cache<String, String> cache = cacheManager.getCache("askbob", String.class, String.class);
return cache;
}

4、缓存设置

@Bean("cacheManager")
public CacheManager cacheManager() {
//缓存大小设置:堆
ResourcePoolsBuilder cacheSize = ResourcePoolsBuilder.newResourcePoolsBuilder().heap(1, EntryUnit.ENTRIES).offheap(1, MemoryUnit.GB);
//缓存类型设置
CacheConfigurationBuilder<String, String> cacheConfigurationBuilder = CacheConfigurationBuilder
.newCacheConfigurationBuilder(String.class, String.class, cacheSize)
.withExpiry(ExpiryPolicyBuilder.timeToLiveExpiration(Duration.ofHours(24)));//缓存超时设置
//创建缓存管理器
CacheManager cacheManager = CacheManagerBuilder.newCacheManagerBuilder()
.withCache("askbob", cacheConfigurationBuilder).build(true);//初始化或cacheManager.init();
return cacheManager;
}

5、测试类

@RunWith(SpringRunner.class)
@SpringBootTest(classes = AskBobApplication.class)
public class EhcacheTest {

@Autowired
Cache<String, String> ehcache;

@Test
public void ehcachTest() {
ehcache.put("ehcach", "hello ehcach 2019");
String cache = ehcache.get("ehcach");
System.out.println(cache);
Assert.assertNotNull(cache);
}
}

转载于:https://www.cnblogs.com/wangymd/p/11170380.html