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Tag Archive for 'queue'

running tasks in order with a task based sequence manager

Published
by
Rolf Vreijdenberger
on 29 August, 2009
in actionscript3, desing patterns and flash
. 8 Comments

The job of running a certain sequence of logic where the next task is dependent on the completion of the previous one is a recurring thing in software development. An example of this is an asynchronous queue of which we wrote in an earlier post right here. Sequence management is something that is invented time and time again by lots of developers but there is hardly any good complete sequencing solution out there. We have fixed this by releasing our nl.dpdk.commands.tasks package which features an incredibly powerful solution for managing sequences of virtually anything in actionscript.
Do you want to make your life simpler? Then read on…
Continue reading ‘running tasks in order with a task based sequence manager’

Asynchronous queue demo with a LinkedList

Published
by
Rolf Vreijdenberger
on 2 April, 2009
in actionscript3, datastructures and dpdk
. 1 Comment

This post will show you the principle of an asynchronous queue, demonstrating it with the LinkedList structure in our package, used as a Queue by making it’s datatype nl.dpdk.collections.core.IQueue.

An Asynchrounous Queue is a queue that is processed with asynchrounous operations. Instead of processing a Queue in synchronous fashion, where you would remove all items from the queue in a loop, the items are removed only when the previous operation has finished (succesfully or not). The time when this is handled is not known in advance, and is event driven rather than procedurally driven.

Most browser cannot handle more than a couple of simultaneous http requests from flash, and just trying to load them all at once (in a loop) is error prone. A queue is a lifesaver in a case like this.
Continue reading ‘Asynchronous queue demo with a LinkedList’