SpringCache缓存处理详解

import lombok.extern.slf4j.Slf4j;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.ServletComponentScan;
import org.springframework.cache.annotation.EnableCaching;
@Slf4j
@SpringBootApplication
@ServletComponentScan
@EnableCaching
public class ReggieApplication {
    public static void main(String[] args) {
        SpringApplication.run(ReggieApplication.class);
    }
}

/**
* 注入注解缓存接口
*/
@Autowired
private CacheManager cacheManager;

/**
* CachePut:将方法返回的值放入缓存中
* value：缓存的名称，每一个缓存名称下面可以有多个key
* key：缓存的key，重点灵活配置
*/
@CachePut(value = "userCache",key = "#users.id")
@GetMapping()
public User get(User user){
   User users= dishService.updateById(user);
     return users;
}

/**
* CacheEvict:清理指定缓存
* value：缓存的名称，每一个缓存名称下面可以有多个key
* key：缓存的key，重点灵活配置
*/
// @CacheEvict(value = "userCache",key = "#p0")
// @CacheEvict(value = "userCache",key = "#root.args[0]")
@CacheEvict(value = "userCache",key = "#id")
@DeletMapping("/{id}")
public void get(@PathVariable Long id){
   dishService.removeById(id);
}

/*
* unless：满足条件不缓存
* condition：满足条件时才缓存
* 
*/
// @CacheEvict(value = "userCache",key = "#p0")
// @CacheEvict(value = "userCache",key = "#root.args[0]")
@Cacheable(value = "userCache",key = "#users.id",unless= "#result == bull")
@GetMapping("/{id}")
public User get(@PathVariable Long id){
   User users = userService.getById(id);
   return users;
}

<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
<!--使用注解完成缓存技术-->
<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-cache</artifactId>
</dependency>

spring:
  # 配置redis链接学习
  redis:
    host: localhost
    port: 6379
    database: 0 # 操作的库（有12个）
    jedis:
      pool:
        max-active: 8 # 最大链接数据
        max-wait: 1ms # 连接池最大阻塞等待时间
        max-idle: 4 # 连接线中最大的空闲链接
        min-idle: 0 # 连接池中最小空闲链接
   cache:
    redis:
      time-to-live: 1800000 # 缓存的过期时间