要使用Hazelcast的Spring Boot缓存,您需要执行以下步骤:
步骤1:添加Hazelcast和Spring Boot依赖项
在您的Spring Boot项目的pom.xml文件中添加以下依赖项:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-cache</artifactId>
</dependency>
<dependency>
<groupId>com.hazelcast</groupId>
<artifactId>hazelcast-spring</artifactId>
</dependency>
步骤2:配置Hazelcast
在您的application.properties文件中添加以下配置:
spring.cache.type=hazelcast
hazelcast.config=hazelcast.xml
步骤3:创建Hazelcast配置文件
在您的项目的src/main/resources目录下创建一个名为hazelcast.xml的文件,并添加以下内容:
<hazelcast>
<cache name="myCache">
<management-enabled>true</management-enabled>
<statistics-enabled>true</statistics-enabled>
<eviction size="10000" max-size-policy="ENTRY_COUNT" eviction-policy="LFU"/>
<expiry-policy-factory>
<timed-expiry-policy-factory expiry-policy-type="CREATED"/>
</expiry-policy-factory>
</cache>
</hazelcast>
步骤4:创建缓存管理器
创建一个类来配置和管理缓存,例如:
import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializationContext;
@Configuration
@EnableCaching
public class CacheConfig {
@Bean
@Primary
public CacheManager cacheManager(RedisConnectionFactory redisConnectionFactory) {
RedisCacheConfiguration cacheConfig = RedisCacheConfiguration.defaultCacheConfig()
.serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(new GenericJackson2JsonRedisSerializer()));
return RedisCacheManager.builder(redisConnectionFactory)
.cacheDefaults(cacheConfig)
.build();
}
}
步骤5:使用缓存
在您的服务类或控制器类中使用@Cacheable注解来启用缓存,例如:
import org.springframework.cache.annotation.Cacheable;
import org.springframework.stereotype.Service;
@Service
public class MyService {
@Cacheable("myCache")
public String getValue(String key) {
// 在这里执行一些复杂的计算或数据库查询操作
return "value";
}
}
现在您已经设置了Hazelcast的Spring Boot缓存,并且可以在需要时使用@Cacheable注解来缓存方法的结果。