private volatile static Map<String, List<Long>> MAP = new ConcurrentHashMap<>();
// 根据队列id，取出对应的限流队列，若没有则创建
List<Long> list = MAP.computeIfAbsent(listId, k -> new LinkedList<>());
标签：MAP,队列,知识,零碎,限流,new From： https://www.cnblogs.com/p201821460026/p/17749874.html