ConcurrentLinkedQueue: An unbounded thread-safe queue based on linked nodes.
ConcurrentLinkedDeque: An unbounded concurrent deque based on linked nodes.
Interface Deque<E>: A linear collection that supports element insertion and removal at both ends.
Superinterfaces: Collection<E>, Queue<E>, etc.
Implementing Classes: ArrayDeque, ConcurrentLinkedDeque, LinkedList;
There’s no ConcurrentLinkedHashMaplink
没有ConcurrentLinkedHashMap, 但是有ConcurrentHashMap, 是为了 thread-safe 加入到这个hashmap中