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@ -145,6 +145,68 @@ public final class SecurityCache {
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return cache;
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}
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/**
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* 获得缓存 (自定义 TTL)
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* @param redisTemplate redisTemplate
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* @param key 主键
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* @param callbackSource 原数据回调
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* @return Object
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*/
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public static Object getByTtl(
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final RedisTemplate<String, Object> redisTemplate,
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final String key, final Function<String, Object> callbackSource, final int ttl){
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if(null == redisTemplate || null == key || null == callbackSource){
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throw new RuntimeException("入参[redisTemplate,key,callbackSource]必填");
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}
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// 先判断本地缓存是否存在 默认为存在(类似于伪布隆过滤)
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if(isNonExist(key)){
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return null;
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}
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// 缓存 Object 对象
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Object cache = getCacheObject(redisTemplate, key);
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// 如果缓存不为空 则直接返回
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if(null != cache){
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return cache;
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}
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// 如果还没查到缓存 则需要 穿透到 源数据查询
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// 开启本地锁
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@SuppressWarnings("UnstableApiUsage")
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Lock lock = STRIPED.get(key);
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try {
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// 尝试获得锁
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if(lock.tryLock(DEFAULT_LOCK_TIME, TimeUnit.SECONDS)){
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// 先判断本地缓存是否存在 默认为存在(类似于伪布隆过滤)
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if(isNonExist(key)){
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return null;
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}
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// 梅开二度 如果查到后 直接返回
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cache = getCacheObject(redisTemplate, key);
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// 如果缓存不为空 则直接返回
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if(null != cache){
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return cache;
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}
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// 如果这时候还没有 则查询源数据
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cache = callbackSource.apply(key);
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if(null == cache){
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// 存储缓存状态
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LFU_NULL_CACHE.put(key, CacheStatus.NOT_EXIST);
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return null;
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}
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// 存入 Redis缓存
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put(redisTemplate, key, cache, ttl);
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}
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}catch (Exception e){
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log.error(e.getMessage(), e);
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}finally {
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lock.unlock();
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}
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return cache;
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}
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/**
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* 存储缓存
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* @param redisTemplate redisTemplate
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@ -199,7 +261,33 @@ public final class SecurityCache {
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LFU_NULL_CACHE.invalidate(key);
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}
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/**
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* 存储缓存
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* @param redisTemplate redisTemplate
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* @param key 主键
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* @param val 值
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* @param seconds 过期秒数
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*/
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public static void put(
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final RedisTemplate<String, Object> redisTemplate,
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final String key, final Object val, final Integer seconds) {
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if (null == redisTemplate || null == key || null == val) {
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throw new RuntimeException("入参[redisTemplate,key,val]必填");
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}
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String cacheKey = StrUtil.addPrefixIfNot(key, CACHE_PREFIX_KV);
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redisTemplate.opsForValue()
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.set(
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cacheKey,
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val,
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seconds,
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TimeUnit.SECONDS
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);
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// 清除本地记录
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LFU_NULL_CACHE.invalidate(key);
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}
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/**
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* 获得缓存 Hash
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