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8

Keep in mind: Be funny. Don't explain it as a programmer. Take the user's point of view. Give a solution like "Come back in few minutes". For me the best example is the Twitter one with the whale. Really nice.


2

Combining both: you can use custom error pages on Apache and make a tailored-to-your-site error message for the 503 error. I think the phrasing you used yourself is very clear: "the system is experiencing higher than expected usage and the system timed out trying to log on the user" - You could adapt it a bit, but in essence this is clear and exactly what ...


2

NO. NO! NO!! NO!!! NO!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Don't 20 somethings work? Don't teens and 20 somethings have parents, significant others, room mates and others? Sometimes you need to be quiet and the last thing you need is SOUND. Yes you can turn the sound off, or have head phones - but we all forget don't we? So the answer is ...


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This may not be an answer to the specific question you are asking ("Any specific site, application or book...?"), but perhaps it can help... A drag-n-drop, graphical interface for Set-Manipulation should have a strong mapping of screen-geography to some aspect of the data being represented. When viewing a selection of Sets, the arrangement of those Sets on ...


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Well in short - and I'm sure your team has come to this conclusion already - users won't be able to run all of these in one fell swoop. The closest you could get would be to mimic Excel-like functionality whereby users can add cell-level functions to manipulate the values. My gut reaction/solution: Grids. 3,000-5,000 records is a trivial amount. Minuscule ...


2

The requirements sound like a good fit for a spreadsheet-like application to me: the primary focus should be on the data - display as much info as possible about the records (5000 is not that many data, but you could use infinite scroll techniques) autofilter-like search on the data, saved searches and tick-box selection would provide the best way to ...


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"Any specific site, application or book where I can find more about such an approach?" None I know of. Your best bet may be some Ph.D/M.Sc visualisation research thesis. To get the UX design right need to understand the Users Domain and create a model of this in the system that they can interact with. What not many people realise is that SQL is a textual ...


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With 100,000 controllers you're moving beyond the normal range of SCADA systems. For inspiration you're best off looking to data browsing from telecoms networks. Try: http://www.mamartino.com/images/pulse_city_graphicon_2010.pdf Also try a google image search for "internet network traffic map". There is however a bit of a disconnect between these high ...


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I don't know enough about your system to be sure this is going to work, but your description makes it sound similar to a field that uses the following approach. The way to locate a resource is by running a query. You say "Give me all controllers attached to node X". You can get complex boolean queries there, using the different metadata you have on the ...



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