Spring Boot 使用 Cacheable 笔记

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示例:

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cache.annotation.EnableCaching;

@EnableCaching // 开启缓存
@SpringBootApplication
public class DemoApplication {
    public static void main(String[] args) {
        SpringApplication.run(DemoApplication.class, args);
    }
}

import lombok.extern.slf4j.Slf4j;
import org.springframework.cache.annotation.CacheConfig;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.stereotype.Service;

import java.util.*;
import java.util.stream.Collectors;

@Slf4j
@Service
@CacheConfig(cacheNames = "Demo")
public class DemoService {
    // 缓存
    @Cacheable(key = "'DEMO'")
    public String demoCacheable(String name) {
        log.info("demoCacheable: {}", name);
        return "Hello " + name;
    }
    // 更新
    @CachePut(key = "'DEMO'")
    public String demoCachePut(String name) {
        log.info("demoCachePut: {}", name);
        return "Hello " + name;
    }
    // 清除
    @CacheEvict(key = "'DEMO'")
    public String demoCacheEvict(String name) {
        log.info("demoCacheEvict: {}", name);
        return "Hello " + name;
    }
}

注意: 内部调用时 @Cacheable、@CachePut、 @CacheEvict 均会失效