Java / Concurrent collections
List some of the concurrency collection interfaces.
BlockingQueue defines a FIFO (first-in-first-out) data structure that blocks or times out when you attempt to add to a full queue, or retrieve from an empty queue.
ConcurrentMap is a subinterface of java.util.Map that defines useful atomic operations. These operations remove or replace a key-value pair only if the key is present, or add a key-value pair only if the key is absent. Making these operations atomic helps avoid synchronization. The general purpose implementation of ConcurrentMap is ConcurrentHashMap, which is a concurrent analog of HashMap.
ConcurrentNavigableMap is a subinterface of ConcurrentMap that supports approximate matches. The general-purpose implementation of ConcurrentNavigableMap is ConcurrentSkipListMap, which is a concurrent analog of TreeMap.
BlockingDeque interface extends BlockingQueue and adds the operations of Deque.
TransferQueue interface extends BlockingQueue and adds method where the producer will wait for the consumer to receive elements.
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