high_scalability high_scalability-2011 high_scalability-2011-1112 knowledge-graph by maker-knowledge-mining
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Introduction: When I was a child, I spake as a child, I understood as a child, I thought as a child: but when I became a man, I put away childish things . -- Corinthians With this new pricing, developments will be driven by the costs . I like to optimize my apps to make them better or faster, but to optimize them just to make them cheaper is a waste of time. -- Sylvain on Google Groups The dream is dead. Google App Engine's bold pay for what you use dream dies as it leaves childish things behind and becomes a real product . Pricing will change . Architectures will change. Customers will change. Hearts and minds will change. But Google App Engine will survive. Google is shutting down many of its projects . GAE is not among them. Do we have GAE's pricing change to thank for it surving the more wood behind more deadly arrows push? Without a radical and quick shift towards profitably GAE would no doubt be a historical footnote in the long scroll of good ideas. The urgency involve
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1 The urgency involved is clearly reflected in GAE's offering a 50% pricing discount and moving to the new pricing scheme before the multi-threaded version of Python has been rolled out. [sent-15, score-0.407]
2 From an abstract resource driven model, where pricing is pegged to actual CPU usage, GAE is moving to an instance driven model, in the Amazon style, where pricing is pegged to the fully burdened cost of real physical assets (see the FAQ for details). [sent-31, score-0.647]
3 I thought GAE would completely lose the instance image concept all together in favor of applications being written on one giant task queue container. [sent-97, score-0.432]
4 So with this super cool task queue framework and programming model being developed I felt sure they were ready to announce that the monolithic images would disappear, instances would disappear, and there would be an even finer pay for what you use billing model as a replacement. [sent-114, score-0.858]
5 A smaller work granularity would allow work to be schedule in idle times, which is why I think the task queue model is superior. [sent-123, score-0.586]
6 This caused the scheduler to create more instances to handle the work. [sent-160, score-0.433]
7 The increase in instances caused a lot more instance hours to be used compared to what the work would seem to entail. [sent-161, score-0.61]
8 Setting the Max Idle Instances to 1, and Min Pending Latency to 15 dropped the instance average to 4 or 5 instances rather than 10 to 15, with no decrease in perceived performance. [sent-173, score-0.401]
9 That' a strange consequence of the change from CPU pricing to instance pricing. [sent-200, score-0.437]
10 The scheduler is determining how many instances will run which in turn determines profitability. [sent-202, score-0.433]
11 Gubbi expresses the sense of this double bind: My gripe is, the new pricing brings latency into focus, while the developers have nothing but their app code to optimize it. [sent-221, score-0.461]
12 For example, when a task is low priority then the scheduler could say hay, we don't need to spin up instances for that, let's just schedule it whenever to take advantage of idle time. [sent-226, score-0.654]
13 By charging for actual instance usage, they are promoting keeping the number of instances down. [sent-233, score-0.487]
14 It appears that the tendency of task queues to bunch up tasks and fire them in parallel leads to a tendency for the scheduler to spin up new instances. [sent-247, score-0.437]
15 The new pricing model has two implications for us: a) we will start paying mostly for idle instances and b) we lose the simplicity and predictability of the existing model. [sent-276, score-0.568]
16 Multitasking is Back Baby With instance based pricing the goal is to get as high a utilization out of an instance as possible. [sent-294, score-0.582]
17 Unfortunately, the current practice of using frontend instances and tasks/map-reduce is now expensive also because for each instance, we have to pay an extra 1/4 instance hour tax beyond our usage. [sent-332, score-0.516]
18 And on the best case it seems this rate will be %25 on gae assuming everything is perfect . [sent-363, score-0.593]
19 The whole Instances Pricing thing is Too Complicated Daniel Florey with a great observation on how complex this all is: Is there no way to create a simple pricing model that will not force me to learn everything about the internals of the app engine scheduler? [sent-373, score-0.602]
20 I'd prefer a simple approach (from a users perspective) where I would get charged for the cpu resources/memory consumed + be able to spend a budget on "scalability/processing power" and let app engine take care of whatever it needs to speed up / slow down my app according to my settings. [sent-376, score-0.689]
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