queue implementation in java

The delayqueue is an unbounded blocking queue that extracts elements only when the delay expires. The head of the queue is the delayed element with the longest save time after the delay expires. Delayqueue blocking queue is also often used in our system development, for example: the design of the cache system, the object in the cache, more than the idle time, ne

From the art of Java concurrency programming What is a blocking queueThe blocking queue (Blockingqueue) is a queue that supports two additional operations. Both of these additional operations support blocking insertion and removal methods. Blocking insertion method: means that when the queue is full, the

above issues: distributed Locks and task queues . Second, the realization of ideas 1.Redis realization of distributed lock idea The idea is very simple, the main use of the Redis function is setnx (), this should be the implementation of distributed locks the most important function. The first is to save a task identification name (here with Lock:order as an example of an identifier) as a key to the Redis, and set an expiration date, if there is

baked, it is necessary to place the muffin in the Delayqueue for the recommended baking time. Listing 4, taken from the Delayqueueusageexample class, shows Enqueue and dequeue muffin objects from Delayqueue.As you can see, the baking time for the muffin object is set using its constructor (the constructor expects the baking time to be in seconds).As mentioned before, the Muffin object is not allowed to be taken out of the delayqueue until his delay time (also called baking time) is extended. Th

take an element out of the queue, and if not, return nullBlocking: When the blocked queue is full, if the producer threads put elements into the queue, the queue blocks the producer thread until it gets the data, or the response breaks out. When the queue is empty, the cons

This article mainly introduces the blocking queue container in Java thread programming, and introduces some basic methods for implementing blocking queues in JDK. For more information, see 1. What is a blocking queue? BlockingQueue is a queue that supports two additional operations. The two additional operations are a

returns null if this queue is empty.5) Object poll (): Gets the element of the queue header, deletes the element, and returns null if this queue is empty.6) Object Remove (): Gets the element of the queue header and deletes the element.The queue interface has a Priorityqueu

Java custom Queue and Application Based on Arrays Java custom Queue: The abstract data type of the queue is a container. The objects in the queue are arranged in a sequence. We can only access and retrieve the objects at the fron

Transferred from: Http://www.cnblogs.com/cppguru/archive/2009/11/19/1605970.html Brief analysis of the implementation principle of Ogre rendering Queue (1) Rendering queue is an important concept in Ogre. All objects in the scenario are put into a specific rendering queue by Ogre before being drawn. The rendering

description of the queue A queue is a basic data structure. We usually wait in line waiting for service, is the first person to accept the service first. For the data structure of the queue, it is a strategy of FIFO (First-int, first-out, FIFO). There are only two--push and pops that change the way elements in the queue