使用hutool做本地缓存的工具类

Posted 2022-08-07 阿拉的梦想

gradle中引入hutool依赖

implementation group: 'cn.hutool', name: 'hutool-all', version: '5.8.4'

本地缓存工具类

package com.demo.devops.common.cache;

import cn.hutool.cache.CacheUtil;
import cn.hutool.cache.impl.TimedCache;
import cn.hutool.core.date.DateUnit;

/**
 * @createTime 2022年07月30日 14:50:00
 */
public class LocalCache 

    /**
     * 默认缓存时长 单位ms
     */

    private static final Long DEFAULT_TIMEOUT = 5 * 60 * 1000L;
    /**
     * 默认清理间隔时间 单位ms
     */
    private static final Long CLEAN_TIMEOUT = 5 * 60 * 1000L;
    /**
     * 缓存对象
     */
    private static TimedCache<String, Object> timedCache = CacheUtil.newTimedCache(DEFAULT_TIMEOUT);

    static 
        //启动定时任务
        timedCache.schedulePrune(CLEAN_TIMEOUT);
    

    public static void set(String key, Object value) 
        timedCache.put(key, value);
    

    public static void set(String key, Object value, Integer expire) 
        timedCache.put(key, value, DateUnit.SECOND.getMillis() * expire);
    

    /**
     * 禁止延迟缓存 isUpdateLastAccess = false
     *
     * @param key
     * @param isUpdateLastAccess 重新计算过期时间
     */
    public static Object get(String key, boolean isUpdateLastAccess) 
        return timedCache.get(key, isUpdateLastAccess);
    

    public static Object get(String key) 
        return timedCache.get(key);
    

    public static void remove(String key) 
        timedCache.remove(key);
    

    public static void clear() 
        timedCache.clear();
    

    public static class Constants
        public static final String DICT_LIST_PREFIX ="DICT:LIST:";
        public static final String DICT_MAP_PREFIX ="DICT:MAP:";