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Questions tagged [scalable]

139 questions
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Scalable approach to make values in a list as column values in a dataframe in pandas in Python

I have a pandas dataframe which has only one column, the value of each cell in the column is a list/array of numbers, this list is of length 100 and this length is consistent across all the cell values. We need to convert each list value as a column…
Shreyance Shaw
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keeping databases in sync (after write/update) across regions/zones

I have to write a webservice in php to serve at three different zones/(cities or countries). Each zone will have its own machine to run this web service instance behind every webservice is a database which is exact clone/copy in each region, web…
Ahmed
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How to apply styles and make window scalable with window.open

After days of trying I am out of my brain: function prtDiv( o ) { var css = 'body {font:normal 10px Arial;}' ; var wo = window.open('','print','width=600,height=600,resizable=yes'); wo.document.write( '
Helmo56
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What are the best practices for database scaling?

What are the best practices to design a scalable database? If database / tables span on multiple servers, how can I join them? Where can I get more information for this?
Krish
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what are the various approaches for generating PDFs?

I have an idea for an app that would take some flash content which contains graphics and images like various geometric shapes and polygons and some random images and convert them to PDF. Also, since I envision this app to be used my multiple users I…
andthereitgoes
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Count for all combinations of two other columns on a large scale

SETUP - I have a large but simple query that usually takes a second or two to run SELECT DISTINCT t1.Col_1, t1.Col_2, t1.Col_3, Col_4, ... t2.Col_3, t3.Col_2, ... (14 columns total) FROM Table_1 t1 INNER JOIN Table_2 t2 ON (t1.COL_3 = t2.COL_1)…
Jeutnarg
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Scaling CSS Header

I am attempting to set up a scalable background image for my header, just based on the width of the browser window (for now). Right now, with what I have, it scales in width just fine. But the header itself does not change height, it's stuck with…
CarenRose
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Alternative to distributed caching

There is a technical requirement to scale a new system easily. This new system consists of three tiered applications (as a batch processors). Each tier will contains at least 2 servers with the same application resides on each server. So, when one…
Santo
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Performance issues with ASP.NET MVC/WCF site & Oracle backend

We are building an extranet loan status check website using ASP.NET MVC with a WCF backend. Its a pretty standard design with the MVC site using a WCF service reference to get customer objects. The ervice uses an Oracle backend + http binding, and…
fjxx
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Resizeable Legend in Matlab GUI or Legend Scroll Bar

In Matlab I have a GUI that analyses and plots data on to a plot in my main figure of the GUI. I often have to plot a lot of different data sets though with it and have two main problems: I cannot set a fixed size area for the legend to be…
user2349373
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WCF Long Polling in 2013

Having gone through a few reads, including... http://anthymecaillard.wordpress.com/2012/06/06/wcf-real-time-web-development-with-long-polling/ How does a WCF server inform a WCF client about changes? (Better solution then simple polling, e.g. Comet…
S. Valmont
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How do I create an array of the contents of a excel column

I have 10 values in column A of a excel spreadsheet (it will be more) is there a way to take the values of the column and put them into an array? And if possible would it be possible to put the values in a different order than they are in in the…
Devon M
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Scalable O(1)-memory threaded counters?

I have a bunch of threads with a bunch of counters. Threads decrement the counters, and interesting things happen if a counter hits zero. This is trivial to implement with atomic ops. However, it gets harder if we require two properties to hold…
Geoffrey Irving
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Is performance worse when putting database to a dedicated server?

I heard that one way to scale your system is to use different machine for web server, database server, and even use multiple instances for each type of server I wonder how could this improve performance over the one-server-for-everything model?…
Chan Le
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Web App using neural networks

I have to build a small web app that uses a classification neural network(such as LVQ) with supervised learning it is not a very complex app but it has to be scalable. I know only PHP and while browsing I came across certain Neural Network managers…
Anurag Sinha
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