使用hutool做本地缓存的工具类

Posted 2022-11-26 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
     */
    private static final long DEFAULT_TIMEOUT = 5 *DateUnit.MINUTE.getMillis();
    /**
     * 默认清理间隔时间
     */
    private static final long CLEAN_TIMEOUT = 5 * DateUnit.MINUTE.getMillis();
    /**
     * 缓存对象
     */
    private static final TimedCache<String, Object> TIMED_CACHE = CacheUtil.newTimedCache(DEFAULT_TIMEOUT);

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

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

    public static void set(String key, Object value, long expire) 
        TIMED_CACHE.put(key, value, expire);
    

    /**
     * 获取并重新计算过期时间
     */
    public static Object getWithUpdateLastAccess(String key) 
        return TIMED_CACHE.get(key);
    

    /**
     * 获取
     *
     * @param key
     * @return
     */
    public static Object get(String key) 
        return TIMED_CACHE.get(key, false);
    

    public static Set<String> keySet() 
        return TIMED_CACHE.keySet();
    


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

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

    public static class Constants 
        public static final String DICT_LIST_PREFIX = "dict:list:";
        public static final String DICT_ONE_PREFIX = "dict:one:";
        public static final String DICT_MAP_PREFIX = "dict:map:";

        public static final String SCRIPT = "script:";