launch-webFlux-platform/launch-redis/src/main/java/com/weblux/launchredis/cacheConfig/CacheConfig.java

package com.weblux.launchredis.cacheConfig;

import com.google.common.cache.Cache;
import com.google.common.cache.CacheBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.time.Duration;
import java.time.LocalDateTime;


@Configuration
public class CacheConfig {

    @Bean
    public Cache<String, Object> guavaCache() {
        long secondsUntilMidnight = getSecondsUntilNextMidnight();
        return CacheBuilder.newBuilder()
                .expireAfterWrite(java.time.Duration.ofMinutes(secondsUntilMidnight))  // 设置缓存过期时间
                .maximumSize(1000)  // 设置缓存最大容量
                .build();
    }

    private static long getSecondsUntilNextMidnight() {
        LocalDateTime now = LocalDateTime.now();
        LocalDateTime midnight = now.toLocalDate().plusDays(1).atStartOfDay().plusHours(0).plusSeconds(0).plusMinutes(1);
        return   Duration.between(now, midnight).toMinutes();
    }
}