The Improved Queue The a4j:queue component creates a queue of the Ajax requests. The Ajax4JSF or RichFaces components with built-in Ajax can reference the queue to optimize their Ajax requests. Previous version of RichFaces also provided queue functionality, but there was a number of reasons to develop the queue component and enhance the queue functionality. In the previous versions the queue had quite a simple implementation: it sent to the server only the last Ajax request out of all requests coming in the queue during a request delay...
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