springboot缓存实现样例
时间: 2023-07-02 10:19:20 浏览: 105
以下是一个使用Spring Boot和Ehcache实现缓存的样例:
1. 添加Ehcache依赖
在pom.xml文件中添加如下依赖:
```xml
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-cache</artifactId>
</dependency>
<dependency>
<groupId>net.sf.ehcache</groupId>
<artifactId>ehcache</artifactId>
</dependency>
```
2. 配置Ehcache
在application.properties或application.yml文件中添加如下配置:
```yaml
spring:
cache:
type: ehcache
```
3. 编写缓存代码
在需要缓存的方法上添加@Cacheable注解,如下所示:
```java
@Service
public class UserService {
@Autowired
private UserDao userDao;
@Cacheable(value = "userCache", key = "#id")
public User getUserById(Long id) {
return userDao.getUserById(id);
}
}
```
上述代码中,@Cacheable注解指定了缓存的名称为"userCache",并且使用方法的参数作为缓存的键值。
4. 清理缓存
在需要清理缓存的方法上添加@CacheEvict注解,如下所示:
```java
@Service
public class UserService {
@Autowired
private UserDao userDao;
@CacheEvict(value = "userCache", key = "#id")
public void deleteUserById(Long id) {
userDao.deleteUserById(id);
}
}
```
上述代码中,@CacheEvict注解指定了需要清理的缓存名称和键值。当调用deleteUserById方法时,缓存中与该键值相关的数据将被清除。
需要注意的是,这只是一个简单的缓存实现样例,实际应用中需要根据具体的业务需求和系统特点来选择合适的缓存框架和配置方式。同时也需要注意缓存的一致性和安全性问题,避免出现数据不一致或者泄露敏感信息的情况。
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