Finding a good way to do this has stumped me for a while now: assume I have a selection box with a set of points in it. By dragging the corners you can scale the (distance between) points in the box. Now for an axis aligned box this is easy. Take a corner as an anchor point (subtract this corner from each point, scale it, then add it to ...
I was trying to find online some exercises to practice scaling techniques (memchached, SQL Optimization, sharding dbs), but I could only find descriptions of these techniques, not any project on which to try them. This link with slides on scaling techniques, is an interesting one, as it sums up some tools to achieve scalability quite we...
Hi Am looking for a cost effective tool for managing an web app on Ec2. Rightscale seems to the big dog and charges for it. Scalr looks like a more cost effective solution but hard to find out any real customer experiences.. The key aspects I'm looking for is a load balancer (http and https) and a way to automatically bring online add...
Has anyone had any experience scaling out SQL Server in a multi reader single writer fashion. If not can anyone suggest a suitable alternative for a read intensive web application, that they have experience with ...
There is a strong case out there for companies who are experiencing scaling problems with their current architecture to simply spend $$$ on cutting edge hardware to achieve the performance and scale they require. In most cases I have experienced and read about, the business case for software re-architecture never stacks up against the b...
I know the question title isn't the best. Let me explain. I do a TON of text processing which converts natural language to xml. These text files get uploaded fairly fast and thrown into a queue. From there they are pulled one-by-one into a background worker that calls our parser (using boost spirit) to transform the text into xml and lo...
I'm developing a simple bar-chart in Reporting Services 2005 with a stored procedure as data-source. The values in this graph can be both positive and negative, and can span a very big range, and hence I cannot specify any non-dynamic scale that will work for all scenarios. The problem I'm facing is that the automatic scaling pretty muc...
How do websites like Digg, Del.icio.us, and StackOverflow implement tagging? I know this other question has an accepted answer of a many-to-many relation with a cross ref table. But how do the "big boys" do it? The same way? How is it scaling? ...
We're developing a .NET app that must make up to tens of thousands of small webservice calls to a 3rd party webservice. We would prefer a more 'chunky' call, but the 3rd party does not support it. We've designed the client to use a configurable number of worker threads, and through testing have code that is fairly well optimized for on...
By Upper tens of thousands requests/second I want to see 60,000 -> +90,000 requests/second. My Setup consists of the following: user ---> web app --> message queue --> parser --> database? I should mention that the parser currently can parse/stuff around 18750 records/second using COPY so we are limited on that end until we start addi...
<< 1 2 3 4 ... 15 16 17 ... 47 48 49 50 >> << 1 2 3 4 5 6 7 ... 47 48 49 50 >> << 1 2 3 4 ... 44 45 46 47 48 49 50 >> (the bold is the selected page) Is there any cleaver logic out there that creates scaling pagination like this? I have created one of these before but it ended up as a mess of logic statements. The langu...
I am putting together a REST API and as I'm unsure how it will scale or what the demand for it will be, I'd like to be able to rate limit uses of it as well as to be able to temporarily refuse requests when the box is over capacity or if there is some kind of slashdotted scenario. I'd also like to be able to gracefully bring the service...
I'm looking to scale an existing phpBB installation by separating the read queries from the write queries to two separate, replicated MySQL servers. Anyone succeeded in doing this, specifically with phpBB? The biggest concern I have so far is that it seems like the queries are scattered haphazardly throughout the code. I'd love to hear ...
I am facing a performance (it can lead to scaling issue later on) issue at the moment. The application I am working on is quite complex and it’s running on SQL Server 2005, I need to join 6 - 7 tables to get the desired data. Each table contains more than 100,000 rows of data so far. The database schema can not be changed (must stay as i...
Im using glScalef() for zooming in my program, now when i revert it back to the original size with code: glScalef(1.0f/ZOOM, 1.0f/ZOOM, 1); It doesnt work very well in high zooms... (maybe because of the lost decimals?) How i can revert it back perfectly to the original size without any calculations like above? ...
Whenever someone talks about a services-based architecture, they often mention scalability, often in the same breath. However, it seems that using services adds more overhead, rather than reducing it, since there is now a protocol, like SOAP or REST, involved. So, does a web services based architecture really add performance benefits as ...
What is the best documentation / articles on scaling, including: Scaling a database driven website (like ebay or amazon) Scaling a client / server architecture in C# or Java ...
There are two occasions on my web page where I don't want Firefox to automatically scale the images when zooming in and out. Can I circumvent this feature on these images specifically, and have the rest of the images zoom as normal in Firefox (if that's what the users has set in his/her preferences)? ...
I am having problems with my WMV file playing in its original resolution and not scaling to the size of the windows media frame. Here is the code: <p> <object height="420" width="585" type="application/x-oleobject" standby="Loading Microsoft Windows Media Player components..." codebase="http://activex.microsoft.co...
Hi all. I am trying to reverse the output being sent to a label printer to match the preprinted paper that it is preloaded with. Some of the printing is done by sending rich text to a Graphics.GetHdc(), the rest is via use of Graphics.DrawXYZ() methods. Because the Matrix class ignores anything sent directly to a device context, I hav...