springboot @Caching(
时间: 2023-12-23 18:24:07 浏览: 92
@Caching 是 Spring Framework 中的一个注解,用于在方法上声明缓存策略。它可以同时声明多个缓存注解,如 @Cacheable、@CachePut 和 @CacheEvict。
例如,下面的代码展示了如何使用 @Caching 注解:
```
@Caching(
cacheable = {
@Cacheable(value = "users", key = "#userId"),
@Cacheable(value = "emails", key = "#email")
},
evict = {
@CacheEvict(value = "users", key = "#userId"),
@CacheEvict(value = "emails", key = "#email")
}
)
public User getUserByIdAndEmail(String userId, String email) {
// ...
}
```
在上面的例子中,我们同时声明了两个缓存注解:@Cacheable 和 @CacheEvict。@Cacheable 用于从缓存中获取数据,@CacheEvict 用于从缓存中删除数据。
相关问题
springboot+mybatisplus
Spring Boot MyBatis Plus is a popular combination of frameworks for building Java-based web applications. Spring Boot is a powerful and widely used framework for building web applications in Java, while MyBatis Plus is a popular ORM (Object-Relational Mapping) framework that simplifies database operations in Java.
MyBatis Plus provides a set of abstractions over MyBatis, which is a lightweight data mapping framework. With MyBatis Plus, you can avoid writing repetitive SQL code, and instead focus on defining database queries using Java code. This makes it easier to work with databases in Java applications, and reduces the amount of boilerplate code that needs to be written.
Spring Boot MyBatis Plus provides a number of features that make it easy to build web applications in Java. It includes support for database migrations, which allows you to easily update your database schema as your application evolves. It also includes support for caching, which can help improve the performance of your application by reducing the number of database queries that need to be executed.
In summary, Spring Boot MyBatis Plus provides a powerful and flexible framework for building Java-based web applications that interact with databases. It simplifies the process of writing database queries, and provides a number of useful features that make it easier to build and maintain your application.
springboot+redisson+nacos
Spring Boot is a popular Java-based framework used for building web applications. Redisson is a Java-based client for the Redis database. Nacos is an open-source service discovery and configuration management system.
Using Spring Boot with Redisson and Nacos can provide a highly scalable and reliable system for building microservices-based applications. Redisson can be used for distributed caching and message passing, while Nacos can be used for service discovery and configuration management.
With Spring Boot, Redisson, and Nacos, developers can easily build and deploy microservices-based applications that can scale horizontally and handle a large number of requests. These technologies also provide features such as fault tolerance, load balancing, and dynamic service discovery, making it easier to build and manage complex distributed systems.
阅读全文