yb课堂实战之轮播图接口引入本地缓存 《二十一》

轮播图接口引入缓存

CacheKeyManager.java

package net.ybclass.online_ybclass.config;

/**
 * 缓存key管理类
 */
public class CacheKeyManager {
    /**
     * 首页轮播图，缓存key
     */
    public static String INDEX_BANNER_LIST_KEY="index:banner:list";
}

VideoServiceImpl.java

BaseCache.java

package net.ybclass.online_ybclass.utils;

import com.google.common.cache.Cache;
import com.google.common.cache.CacheBuilder;
import org.springframework.stereotype.Component;

import java.util.concurrent.TimeUnit;

@Component
public class BaseCache {
    private Cache<String, Object> tenMinteCache= CacheBuilder.newBuilder()
            .initialCapacity(10) //设置缓存初始大小，应该合理设置，后期会扩容
            .maximumSize(100) //最大值
            .concurrencyLevel(5) //并发数
            .expireAfterWrite(600, TimeUnit.SECONDS) //缓存过期时间，写入后10分钟过期
            .recordStats() //统计缓存命中率
            .build();

    public Cache<String, Object> getTenMinteCache() {
        return tenMinteCache;
    }

    public void setTenMinteCache(Cache<String, Object> tenMinteCache) {
        this.tenMinteCache = tenMinteCache;
    }
}

演示