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