SpringBoot集成Caffeine作本地缓存

1. 依赖引入

spring-cache
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-cache</artifactId>
</dependency>

caffeine
<dependency>
    <groupId>com.github.ben-manes.caffeine</groupId>
    <artifactId>caffeine</artifactId>
</dependency>

2. 参数配置（一般配置可以完全放在yaml文件内，不用专门写配置bean）

spring:
  cache:
    type: caffeine
    cache-names: 'ruleCache'
    caffeine:
      spec: initialCapacity=1000, maximumSize=18000, expireAfterAccess=20D

3. 缓存逻辑编写

package com.cfuture.dataqualitycontrol.service.impl;

import com.cfuture.dataqualitycontrol.domain.po.Rule;
import com.cfuture.dataqualitycontrol.service.RuleService;
import org.springframework.cache.annotation.CacheEvict;
import org.springframework.cache.annotation.CachePut;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.stereotype.Service;

/**
 * @author yangjx
 * @date 2021/1/21 14:04
 * @description
 */
@Service
public class RuleServiceImpl implements RuleService {

    @Override
    @CachePut(value = "ruleCache", key = "#rule.id")
    public Rule addRule(Rule rule) {
        return rule;  // 必须返回被缓存对象
    }

    @Override
    @Cacheable(value = "ruleCache", key = "#id")
    public Rule getRule(Long id) {
        Rule rule = Rule.builder().expression(String.valueOf(id)).message(String.valueOf(System.currentTimeMillis())).build();
        rule.setId(id);
        return rule;  // 必须返回被缓存对象
    }

    @Override
    @CacheEvict(value = "ruleCache", key = "#id")
    public boolean deleteRule(Long id) {
        return true;
    }

    @Override
    @CachePut(value = "ruleCache", key = "#rule.id")
    public Rule updateRule(Rule rule) {
        return rule;  // 必须返回被缓存对象
    }

}