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• Ask The Readers: How Do You Camouflage Your Tech?

  - by Jason Fitzpatrick

  We love having a technology-packed house as much as the next geek, but not all our gizmos, gadgets, and peripherals are exactly Home and Garden approved. How do you enjoy all your tech without your living room and office looking like an electronics store? Image courtesy of Weekly Geek’s DIY charging station tutorial. Whether it’s to hide the insanely intense LEDS, minimize the visual clutter, or to boost the wife/husband acceptance factor of your geeky hobbies higher, there’s a variety of reasons for wrangling cables, hiding routers, or otherwise camouflaging your gear. This week we want to hear all about your tips for hiding or otherwise minimizing the appearance of gear around your home, office, and other personal spaces. Sound off in the comments with your best tips, trick, and camouflaging techniques; check back in on Friday for the What You Said roundup. HTG Explains: How Windows 8′s Secure Boot Feature Works & What It Means for Linux Hack Your Kindle for Easy Font Customization HTG Explains: What Is RSS and How Can I Benefit From Using It?

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• Microsoft Researchers shows off best Touch Screen ever made. Better than Apple touch screens!

  - by Gopinath

  All the touch devices we have in market today like iPads, iPhones, Samsung tablets and phones, etc.  have a very small issue – 100 milliseconds of lag. The lag is the amount of time a touch device takes to respond after you touch the device. The 100 milliseconds of lag may not be an issue when you are tapping and swapping the interface elements on a device, but they are apparent when you wing your finger around the screen faster. For example if you use any painting app, the lag is very obvious and screen responds slowly than an artist can paint with his finger. Researchers at Microsoft labs came out with a prototype of touch device that drastically cuts down the 100 milliseconds of lag time to just 1 millisecond. That’s 100 times faster than today’s touch screen devices. Check out the video embedded below for a demo of new touch screen. Over at TechCrunch, Chris Velazco says: The difference is staggering, especially when Dietz trots out the slow-motion footage. With the delay between touch input and screen response slashed by orders of magnitude, a device that sports the sort of super-low-latency Dietz envisions has the potential to feel far more (for lack of a better term) natural than its brethren. There’s zero delay when you slide a checker across a board, for example, and bringing that sort of instantaneous feedback to the many screens in our lives could help to bridge the gap between operating a bit of software and the feeling of interacting with objects.   It will be great boost to Microsoft’s tablet strategy if they succeed in bringing this research into mass market and allow it’s partners to use the technology on Windows 8 tablets.

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• ArchBeat Link-o-Rama for 11/30/2011

  - by Bob Rhubart

  Coding - the new Latin | @BBCRoryCJ BBC Technology Correspondent Rory Cellan-Jones reports on why "the campaign to boost the teaching of computer skills - particularly coding - in schools is gathering force." BPM Business Value Patterns | SOA Partner Community Blog Juergen Kress shares the presentation he and Matthias Ziegler from Accenture delivered at the SOA & BPM Integration Days event in Germany in October. Coherence 3.7.1 Resources Busy blogger Juergen Kress shares links to screencasts and other resources for those interested in Oracle Coherence 3.7.1. OBIEE 11.1.1 - Introduction to OBIEE 11g Full Sample App "The OBIEE 11g Full Sample App (FSA) is a comprehensive collection of examples designed to demonstrate the latest Oracle BIEE 11g capabilities and design best practices." Solaris 11 Customer Maintenance Lifecycle | Gerry Haskins Gerry Haskins launches a new blog devoted to Solaris "policies, best practices, clarifications, and lots of other stuff." Harnessing Business Events for Predictive Decision Making - part 1 / 3 | Sanjeev Sharma "Data growth is outpacing storage capacity by a factor of two and computing power is still very much bounded by Moore's Law, doubling only every 18 months," says Sanjeev Sharma. The Latest Research from the SEI | Douglas C. SchmidtSchmidt shares information on several recently published Software Engineering Institute (SEI) technical reports that "highlight the latest work of SEI technologists in Agile methods, insider threat,the SMART Grid Maturity Model, acquisition, and CMMI." Tiger/Line Shape Files and Oracle | Bradley D. Brown "Have you ever needed to load an ESRI "shape file" and wondered if that's an easy effort or a difficult effort? I know I have and I assumed that it was a pretty difficult effort. However, I learned today that's actually pretty easy!" -- Oracle ACE Director Bradley Brown of TUSC. Webcast: Enterprise Clouds with Oracle VM Tuesday, December 6, 2011, 9:00 am PT / Noon ET. Featuring Adam Hawley (Senior Director of Product Management, Oracle) and Dan Herrup (Principal Systems Engineer, Oracle Corporate Citizenship). SOA Made Simple; Architects in AZ; Cloud Migration Introduction This week on the Architect Home Page on OTN.

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• Oracle Vanquisher: A Data Center Optimization Adventure to Debut at Oracle OpenWorld

  - by Oracle OpenWorld Blog Team

  Heat. Downtime. Site-wide outages. Legacy hardware. Security holes. These are all threats to your data center. What if you could vanquish them to simplify your IT and accelerate business innovation and growth? Find out how - play Oracle Vanquisher, a new data center optimization video game that will be showcased at Oracle OpenWorld (Hardware DEMOgrounds, Moscone South Hall).Playing Oracle Vanquisher, you'll be armed with a cool Oracle vacuum pack suit and a strategic IT roadmap. You'll thwart threats and optimize your data center to increase your company’s stock price and boost your company’s position. Of course, optimizing your data center is far more than a great game. For more information, visit the Oracle Optimized Data Center homepage or check out these targeted Oracle OpenWorld keynotes and sessions:KeynotesShift Complexity, with Oracle President Mark HurdMonday, October 1, 8:00 a.m. - 9:30 a.m.Moscone North, Hall DOracle Cloud Infrastructure and Engineered Systems: Fast, Reliable, Virtualized, with Oracle Executive Vice President John FowlerWednesday, October 3, 8:00 a.m. - 9:45 a.m.Moscone North, Hall DSessions Oracle Linux Oracle Optimized Solutions Oracle Solaris SPARC Servers Storage SPARC SuperCluster Oracle VM Server Virtualization Desktop Virtualization

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• Is NAN suitable for communicating that an invalid parameter was involved in a calculation?

  - by Arman

  I am currently working on a numerical processing system that will be deployed in a performance-critical environment. It takes inputs in the form of numerical arrays (these use the eigen library, but for the purpose of this question that's perhaps immaterial), and performs some range of numerical computations (matrix products, concatenations, etc.) to produce outputs. All arrays are allocated statically and their sizes are known at compile time. However, some of the inputs may be invalid. In these exceptional cases, we still want the code to be computed and we still want outputs not "polluted" by invalid values to be used. To give an example, let's take the following trivial example (this is pseudo-code): Matrix a = {1, 2, NAN, 4}; // this is the "input" matrix Scalar b = 2; Matrix output = b * a; // this results in {2, 4, NAN, 8} The idea here is that 2, 4 and 8 are usable values, but the NAN should signal to the receipient of the data that that entry was involved in an operation that involved an invalid value, and should be discarded (this will be detected via a std::isfinite(value) check before the value is used). Is this a sound way of communicating and propagating unusable values, given that performance is critical and heap allocation is not an option (and neither are other resource-consuming constructs such as boost::optional or pointers)? Are there better ways of doing this? At this point I'm quite happy with the current setup but I was hoping to get some fresh ideas or productive criticism of the current implementation.

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• Pattern for Accessing MySQL connection

  - by Dipan Mehta

  We have an application which is C++ trying to access MySQL database. There are several (about 5 or so) threads in the application (with Boost library for threading) and in each thread has a few objects, each of which is trying to access Database for its' own purpose. It has a simple ORM kind of model but that really is not an important factor here. There are three potential access patterns i can think of: There could be single connection object per application or thread and is shared between all (or group). The object needs to be thread safe and there will be contentions but MySQL will not be fired with too many connections. Every object could initiate connection on its own. The database needs to take care of concurrency (which i think MySQL can) and the design could be much simpler. There could be two possibilities here. a. either object keeps a persistent connection for its life OR b. object initiate connection as and when needed. To simplify the contention as in case of 1 and not to create too many sockets as in case of 2, we can have group/set based connections. So there could be there could be more than one connection (say N), each of this connection could be shared connection across M objects. Naturally, each of the pattern has different resource cost and would work under different constraints and objectives. What criteria should i use to choose the pattern of this for my own application? What are some of the advantages and disadvantages of each of these pattern over the other? Are there any other pattern which is better? PS: I have been through these questions: mysql, one connection vs multiple and MySQL with mutiple threads and processes But they don't quite answer exactly what i am trying to ask.

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• How important do you find exception safety to be in your C++ code?

  - by Kai

  Every time I consider making my code strongly exception safe, I justify not doing it because it would be so time consuming. Consider this relatively simple snippet: Level::Entity* entity = new Level::Entity(); entity->id = GetNextId(); entity->AddComponent(new Component::Position(x, y)); entity->AddComponent(new Component::Movement()); entity->AddComponent(new Component::Render()); allEntities.push_back(entity); // std::vector entityById[entity->id] = entity; // std::map return entity; To implement a basic exception guarantee, I could use a scoped pointer on the new calls. This would prevent memory leaks if any of the calls were to throw an exception. However, let's say I want to implement a strong exception guarantee. At the least, I would need to implement a shared pointer for my containers (I'm not using Boost), a nothrow Entity::Swap for adding the components atomically, and some sort of idiom for atomically adding to both the Vector and Map. Not only would these be time consuming to implement, but they would be expensive since it involves a lot more copying than the exception unsafe solution. Ultimately, it feels to me like that time spent doing all of that wouldn't be justified just so that the a simple CreateEntity function is strongly exception safe. I probably just want the game to display an error and close at that point anyway. How far do you take this in your own game projects? Is it generally acceptable to write exception unsafe code for a program that can just crash when there is an exception?

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• Kinect will recognise your finger movement

  - by Boonei

  Sources inside Microsoft suggest they MS guys are tying to improve motion controller. This could be a huge boost to gaming. There are quite a few things that we can do with our fingers when playing games like driving, shooting,sports etc. If fingers are captured then  XBox will give more realistic version of our avatar. Eurogamer has also suggested the same according to their sources. It would be only(mostly) a software update and would not require a new camera, because the USB controller interface currently in place in Kinect can take in data up-to 35MBps. The current utilization is only around roughly 1/2 of it. So there is currently a facility to send more data. Little more tech data, Kinect does transmit 320×240-pixel in 30 fps, if the device could capture and transfer at 640×480 pixels, then better resolution can detect more movements compared to current level of detection. Lets wait and watch ! This article titled,Kinect will recognise your finger movement, was originally published at Tech Dreams. Grab our rss feed or fan us on Facebook to get updates from us.

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• The Server Fault Wiki of recommended practices [migrated]

  - by Avery Payne

  So I've noticed that there are several recommendations on basic practices on Server Fault, but there doesn't seem to be a cohesive view as to how those recommendations would all fit together. So I thought I would lump these together as a kind of mental exercise to see what the "ServerFault Community IT Department" would look like if it were implemented. This would give a few things: it would make a reasonable wiki (in the true wiki spirit of many contributions), it would provide several links to well-vetted practices, and it would be kind of fun to see what the amalgamation would look like. And who knows, it may even point out some interesting issues between different forms of "best practices", although I would be stunned if there was a conflict hidden in there someplace... Add your favorites from Server Fault as answers, and I'll re-edit this section with the results. Here's a few catagories to collect different ideas together. Hardware Configuration(s) Server room configuration. Server room temperature Firmware Updates and Scheduling Storage Configuration(s) Selecting a NAS box Linux: Dealing with /tmp Linux: Install apps in /var or /opt? Network Configuration(s) checking DNS health and compliance Security Practice(s) Password (General) Best Practices Password sharing methods Windows Update Updating Windows Servers that are hosts for VMs Network Service(s) User Service(s) User Naming & Deletion Upgrade Process(es) Disaster Recovery Checking Backups Documenting an outage for a post-mortem review Last Edit: 2010-02-17

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• OpenGL CPU vs. GPU

  - by Nitrex88

  So I've always been under the impression that doing work on the GPU is always faster than on the CPU. Because of this, in OpenGL, I usually try to do intensive tasks in shaders so they get the speed boost from the GPU. However, now I'm starting to realize that some things simply work better on the CPU and actually perform worse on the GPU (particularly when a geometry shader is involved). For example, in a recent project I did involving procedurally generated terrain, I tried passing a grid of single triangles into a geometry shader, and tesselated each of these triangles into quads with 400 vertices whose height was determined by a noise function. This worked fine, and looked great, but easily maxed out the GPU with only 25 base triangles and caused a very slow framerate. I then discovered that tesselating on the CPU instead, and setting the height (using noise function) in the vertex shader was actually faster! This prompted me to question the benefits of using the GPU as much as possible... So, I was wondering if someone could describe the general pros and cons of using the GPU vs CPU for intensive graphics tasks. I know this mainly comes down to what your trying to achieve, so if necessary, use the above scenario to discuss why the "CPU + vertex shader" was actually faster than doing everything in the geometry shader on the GPU. It's possible my hardware (newest macbook pro) isn't optomized well for the geometry shader (thus causing the slow framerate). Also, I read that the vertex shader is very good with parallelism, and would love a quick explanation of how this may have played a role in speeding up my procedural terrain. Any info/advice about CPU/GPU/shaders would be awesome!

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• OpenGL CPU vs. GPU

  - by Nitrex88

  So I've always been under the impression that doing work on the GPU is always faster than on the CPU. Because of this, in OpenGL, I usually try to do intensive tasks in shaders so they get the speed boost from the GPU. However, now I'm starting to realize that some things simply work better on the CPU and actually perform worse on the GPU (particularly when a geometry shader is involved). For example, in a recent project I did involving procedurally generated terrain, I tried passing a grid of single triangles into a geometry shader, and tesselated each of these triangles into quads with 400 vertices whose height was determined by a noise function. This worked fine, and looked great, but easily maxed out the GPU with only 25 base triangles and caused a very slow framerate. I then discovered that tesselating on the CPU instead, and setting the height (using noise function) in the vertex shader was actually faster! This prompted me to question the benefits of using the GPU as much as possible... So, I was wondering if someone could describe the general pros and cons of using the GPU vs CPU for intensive graphics tasks. I know this mainly comes down to what your trying to achieve, so if necessary, use the above scenario to discuss why the "CPU + vertex shader" was actually faster than doing everything in the geometry shader on the GPU. It's possible my hardware (newest macbook pro) isn't optomized well for the geometry shader (thus causing the slow framerate). Also, I read that the vertex shader is very good with parallelism, and would love a quick explanation of how this may have played a role in speeding up my procedural terrain. Any info/advice about CPU/GPU/shaders would be awesome!

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• Customer Concepts TV

  - by Richard Lefebvre

  Eliminate the Guesswork in Your Customer's Sales Organization Selling is the lifeblood of every business. In the past, companies would increase headcount to boost sales. In today’s business environment, companies need to re-evaluate the way in which they sell. Sales and marketing organisations must optimise performance, increase team productivity and focus on the best opportunities. Oracle Fusion CRM has been specifically designed with tools to help sales and marketing teams improve efficiency and drive revenue. Territory modeling and management, quota and commission management, collaborative features, real-time customer information and mobile device integration are just some features incorporated. Join us on Customer Concepts TV as we aim to help you find the right strategy for your prospect and customers. Whether they already have a CRM solution in place or are looking for the next level of CRM implementation, this online TV show will give you very practical advice that can help you to make the most out of your CRM implementation.Register now to reserve your spot for this exclusive, live-stream event. Customer Concepts TV comes to you on April 24. Watch the Customer Concepts TV trailer here

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• Today's Links (6/17/2011)

  - by Bob Rhubart

  Call for Nominations: Oracle Eco-Enterprise Innovation Awards Is your organization using Oracle products to reduce your environmental footprint while reducing costs? If so, submit your nomination for Oracle's Eco-Enterprise Innovation award. These awards will be presented to select customers and their partners who are using any of Oracle's products to not only take an environmental lead, but also to reduce their costs and improve their business efficiencies by using green business practices. Beyond The Data Grid: Coherence, Normalization, Joins, and Linear Scalability | Ben Stopford Ben Stopford presents ODC, a highly distributed in-memory normalized NoSQL datastore designed for scalability, based on normalized data, Snowflake Schema, and Connected Replication pattern. Upgrading ALSB services to OSB | John Chin-a-Woeng John Chin-a-Woeng walks you through the upgrade from Aqualogic Service Bus (ALSB 3.0) to Oracle Service Bus (OSB 10.3). SOA & Middleware: Pinning tasks to a user in BPM 11g | Niall Commiskey Commiskey illustrates a scenario. JDeveloper 11gR2: New option Test WebService in WSDL editor | Lucas Jellema The "Test WebService" button in the WSDL Editor in JDeveloper 11gr2 is "just a little feature addition," says Oracle ACE Director Lucas Jellema. "But it can be quite useful all the same." Enterprise Business Intelligence 11g Seminar with Mark Rittman Oracle ACE Director Mark Rittman conducts a two-day course for Oracle University, in Dublin, IE, July 4-5, 2011. Data Integration Webcast Series Join Oracle experts for a series covering our data integration solutions. You’ll get invaluable information to help boost your data infrastructure so that you can accelerate your business.

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• How do you cope with change in open source frameworks that you use for your projects?

  - by Amy

  It may be a personal quirk of mine, but I like keeping code in living projects up to date - including the libraries/frameworks that they use. Part of it is that I believe a web app is more secure if it is fully patched and up to date. Part of it is just a touch of obsessive compulsiveness on my part. Over the past seven months, we have done a major rewrite of our software. We dropped the Xaraya framework, which was slow and essentially dead as a product, and converted to Cake PHP. (We chose Cake because it gave us the chance to do a very rapid rewrite of our software, and enough of a performance boost over Xaraya to make it worth our while.) We implemented unit testing with SimpleTest, and followed all the file and database naming conventions, etc. Cake is now being updated to 2.0. And, there doesn't seem to be a viable migration path for an upgrade. The naming conventions for files have radically changed, and they dropped SimpleTest in favor of PHPUnit. This is pretty much going to force us to stay on the 1.3 branch because, unless there is some sort of conversion tool, it's not going to be possible to update Cake and then gradually improve our legacy code to reap the benefits of the new Cake framework. So, as usual, we are going to end up with an old framework in our Subversion repository and just patch it ourselves as needed. And this is what gets me every time. So many open source products don't make it easy enough to keep projects based on them up to date. When the devs start playing with a new shiny toy, a few critical patches will be done to older branches, but most of their focus is going to be on the new code base. How do you deal with radical changes in the open source projects that you use? And, if you are developing an open source product, do you keep upgrade paths in mind when you develop new versions?

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• Doing powerups in a component-based system

  - by deft_code

  I'm just starting really getting my head around component based design. I don't know what the "right" way to do this is. Here's the scenario. The player can equip a shield. The the shield is drawn as bubble around the player, it has a separate collision shape, and reduces the damage the player receives from area effects. How is such a shield architected in a component based game? Where I get confused is that the shield obviously has three components associated with it. Damage reduction / filtering A sprite A collider. To make it worse different shield variations could have even more behaviors, all of which could be components: boost player maximum health health regen projectile deflection etc Am I overthinking this? Should the shield just be a super component? I really think this is wrong answer. So if you think this is the way to go please explain. Should the shield be its own entity that tracks the location of the player? That might make it hard to implement the damage filtering. It also kinda blurs the lines between attached components and entities. Should the shield be a component that houses other components? I've never seen or heard of anything like this, but maybe it's common and I'm just not deep enough yet. Should the shield just be a set of components that get added to the player? Possibly with an extra component to manage the others, e.g. so they can all be removed as a group. (accidentally leave behind the damage reduction component, now that would be fun). Something else that's obvious to someone with more component experience?

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• Doing powerups in a component-based system

  - by deft_code

  I'm just starting really getting my head around component based design. I don't know what the "right" way to do this is. Here's the scenario. The player can equip a shield. The the shield is drawn as bubble around the player, it has a separate collision shape, and reduces the damage the player receives from area effects. How is such a shield architected in a component based game? Where I get confused is that the shield obviously has three components associated with it. Damage reduction / filtering A sprite A collider. To make it worse different shield variations could have even more behaviors, all of which could be components: boost player maximum health health regen projectile deflection etc Am I overthinking this? Should the shield just be a super component? I really think this is wrong answer. So if you think this is the way to go please explain. Should the shield be its own entity that tracks the location of the player? That might make it hard to implement the damage filtering. It also kinda blurs the lines between attached components and entities. Should the shield be a component that houses other components? I've never seen or heard of anything like this, but maybe it's common and I'm just not deep enough yet. Should the shield just be a set of components that get added to the player? Possibly with an extra component to manage the others, e.g. so they can all be removed as a group. (accidentally leave behind the damage reduction component, now that would be fun). Something else that's obvious to someone with more component experience?

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• The Science Behind Salty Airline Food

  - by Jason Fitzpatrick

  In this collection, Artist Signe Emma combines a scientific overview of the role salt plays in airline food with electron microscope scans of salt crystals arranged to look like the views from an airplane–a rather clever and visually stunning way to deliver the message. Attached to the collection is this explaination of why airlines load their snacks and meals with salt: White noise consists of a random collection of sounds at different frequencies and scientists have demonstrated that it is capable of diminishing the taste of salt. At low-pressure conditions, higher taste and odour thresholds of flavourings are generally observed. At 30.000 feet the cabin humidity drops by 15%, and the lowered air pressure forces bodily fluids upwards. With less humidity, people have less moisture in their throat, which slows the transport of odours to the brains smell and taste receptors. That means that if a meal should taste the same up in the air, as on ground it needs 30% of extra salt. To combat the double assault on our sense of taste, the airlines boost the salt content to compensate. For more neat microscope scans as high-altitude view photographs, hit up the link below. How to Play Classic Arcade Games On Your PC How to Use an Xbox 360 Controller On Your Windows PC Download the Official How-To Geek Trivia App for Windows 8

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• Performance of concurrent software on multicore processors

  - by Giorgio

  Recently I have often read that, since the trend is to build processors with multiple cores, it will be increasingly important to have programming languages that support concurrent programming in order to better exploit the parallelism offered by these processors. In this respect, certain programming paradigms or models are considered well-suited for writing robust concurrent software: Functional programming languages, e.g. Haskell, Scala, etc. The actor model: Erlang, but also available for Scala / Java (Akka), C++ (Theron, Casablanca, ...), and other programming languages. My questions: What is the state of the art regarding the development of concurrent applications (e.g. using multi-threading) using the above languages / models? Is this area still being explored or are there well-established practices already? Will it be more complex to program applications with a higher level of concurrency, or is it just a matter of learning new paradigms and practices? How does the performance of highly concurrent software compare to the performance of more traditional software when executed on multiple core processors? For example, has anyone implemented a desktop application using C++ / Theron, or Java / Akka? Was there a boost in performance on a multiple core processor due to higher parallelism?

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• How to use Pixel Bender (pbj) in ActionScript3 on large Vectors to make fast calculations?

  - by Arthur Wulf White

  Remember my old question: 2d game view camera zoom, rotation & offset using 'Filter' / 'Shader' processing? I figured I could use a Pixel Bender Shader to do the computation for any large group of elements in a game to save on processing time. At least it's a theory worth checking. I also read this question: Pass large array to pixel shader Which I'm guessing is about accomplishing the same thing in a different language. I read this tutorial: http://unitzeroone.com/blog/2009/03/18/flash-10-massive-amounts-of-3d-particles-with-alchemy-source-included/ I am attempting to do some tests. Here is some of the code: private const SIZE : int = Math.pow(10, 5); private var testVectorNum : Vector.<Number>; private function testShader():void { shader.data.ab.value = [1.0, 8.0]; shader.data.src.input = testVectorNum; shader.data.src.width = SIZE/400; shader.data.src.height = 100; shaderJob = new ShaderJob(shader, testVectorNum, SIZE / 4, 1); var time : int = getTimer(), i : int = 0; shaderJob.start(true); trace("TEST1 : ", getTimer() - time); } The problem is that I keep getting a error saying: [Fault] exception, information=Error: Error #1000: The system is out of memory. Update: I managed to partially workaround the problem by converting the vector into bitmapData: (Using this technique I still get a speed boost of 3x using Pixel Bender) private function testShader():void { shader.data.ab.value = [1.0, 8.0]; var time : int = getTimer(), i : int = 0; testBitmapData.setVector(testBitmapData.rect, testVectorInt); shader.data.src.input = testBitmapData; shaderJob = new ShaderJob(shader, testBitmapData); shaderJob.start(true); testVectorInt = testBitmapData.getVector(testBitmapData.rect); trace("TEST1 : ", getTimer() - time); }

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• Performing client-side OAuth authorized Twitter API calls versus server side, how much of a difference is there in terms of performance?

  - by Terence Ponce

  I'm working on a Twitter application in Ruby on Rails. One of the biggest arguments that I have with other people on the project is the method of calling the Twitter API. Before, everything was done on the server: OAuth login, updating the user's Twitter data, and retrieving tweets. Retrieving tweets was the heaviest thing to do since we don't store the tweets in our database, so viewing the tweets means that we have to call the API every time. One of the people in the project suggested that we call the tweets through Javascript instead to lessen the load on the server. We used GET search, which, correct me if I'm wrong, will be removed when v1.0 becomes completely deprecated, but that really isn't a concern now. When the Twitter API has migrated completely to v1.1 (again, correct me if I'm wrong), every calls to the API must be authenticated, so we have to authenticate our Javascript requests to the API. As said here: We don't support or recommend performing OAuth directly through Javascript -- it's insecure and puts your application at risk. The only acceptable way to perform it is if you kept all keys and secrets server-side, computed the OAuth signatures and parameters server side, then issued the request client-side from the server-generated OAuth values. If we do exactly what Twitter suggests, the only difference between this and doing everything server-side is that our server won't have to contact the Twitter API anymore every time the user wants to view tweets. Here's how I would picture what's happening every time the user makes a request: If we do it through Javascript, it would be harder on my part because I would have to create the signatures manually for every request, but I will gladly do it if the boost in performance is worth all the trouble. Doing it through Ruby on Rails would be very easy since the Twitter gem does most of the grunt work already, so I'm really encouraging the other people in the project to agree with me. Is the difference in performance trivial or is it significant enough to switch to Javascript?

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• Ranking drop after using reverse proxy for blog subdirectory and robots.txt for old blog subdomain

  - by user40387

  We have a 3Dcart store and a WordPress blog hosted on a separate server. Originally, we had a CNAME set up to point the blog to http://blog.example.com/. However, in our attempt to boost link-based and traffic-based authority on the main site, we've opted to do a reverse proxy to http://www.example.com/blog/. It’s been about two months since we finished the reverse proxy migration. It appears that everything is technically working as intended, including some robots and sitemap changes; the new URLs are even generating some traffic, as indicated on Google Analytics. While Google has been indexing the new URL locations, they’re ranking very poorly, even for non-competitive, long-tail keywords. Meanwhile, the old subdomain URLs are still ranking mostly as well as they used to (even though they aren’t showing meta titles and descriptions due to being blocked by robots.txt). Our working theory is that Google has an old index of the subdomain URLs, and is considering the new URLs to be duplicate content, since it’s being told not to crawl the subdomain and therefore can’t see the rel canonicals we have in place. To resolve this, we’ve updated the subdomain’s robot.txt to no longer block crawling and indexing. Theoretically, seeing the canonical tag on the subdomain pages will resolve any perceived duplicate content issues. In the meantime, we were wondering if anyone would have any other ideas. We are very concerned that we’ll be losing valuable traffic, as we’re entering our on season at the moment.

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• A (slight) Change of Focus

  - by StuartBrierley

  When I started this blog in September 2009 I was working as a BizTalk developer for a financial institution based in the South West of England.  At the time I was developing using BizTalk Server 2004 and intended to use my blog to collate and share any useful information and experiences that I had using this version of BizTalk (and occasionally other technologies) in an effort to bring together as many useful details as I could in one place. Since then my circumstances have changed and I am no longer working in the financial industry using BizTalk 2004.  Instead I have recently started a new post in the logistics industry, in the North of England, as "IT Integration Manager".  The company I now work for has identified a need to boost their middleware/integration platform and have chosen BizTalk Server 2009 as their platform of choice; this is where I come in. To start with my role is to provide the expertise with BizTalk that they currently lack, design and direct the initial BizTalk 2009 implementation and act as lead developer on all pending BizTalk projects.  Following this it is my hope that we will be able to build on the initial BizTalk "proof of concept" and eventually implement a fully robust enterprise level BizTalk 2009 environment. As such, this blog is going to see a shift in focus from BizTalk 2004 to BizTalk 2009 and at least initially is likely to include posts on the design and installation of our BizTalk environment - assuming of course that I have the time to write them! The last post I made was the start of a chapter by chapter look at the book SOA Patterns with BizTalk Server 2009.  Due to my change of job I am currently "paused" half way through this book, and my lack of posts on the subject are directly as a result of the job move and the pending relocation of my family.  I am hoping to write about my overall opinion of this book sometime soon; so far it certainly looks like it will be a positive one. Thanks for reading; I'm off to manage some integration.

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• Win7 System folder contains infinitely looping SYSTEM(!) directory

  - by Matt

  My Windows 7 Enterprise computer has been crashing fairly frequently recently, so I decided to boot up in safe mode and run the TrendMicro client I have installed. It froze about 10 minutes into the full system scan, so in the spirit of http://whathaveyoutried.com, I started scanning each folder individually. When I got to ProgramData, the AV failed with an uncaught exception. I then went down a level and tried scanning Application Data, which failed as well. Imagine my surprise when I open the folder just to see the same folder again! As far as I can tell, this folder loop continues indefinitely. (If you are trying to recreate this, keep in mind that ProgramData is a hidden folder.) I'm actually a bit concerned that these are system folders, as this is a brand-new computer with a clean installation. I guess I have three questions: Has anyone else seen/experienced this before? I'm running Win7 SP1. How do I fix this? I've run CHKDSK \F with no success (although it was incredibly slow). What are the ramifications of an infinitely recursive directory? Theoretically speaking, each link takes up memory, so shouldn't I have no space available on my hard drive? (I've got about 180GB left.) I noticed that the tree view on the left only shows the "linked folder" icon on the deeper folders--does this mean anything special? (I've circled the icons or lack thereof in red.) How can the OS even resolve this aberration? And above all, what would happen if I were to select "Expand all folders"??? :P Matt

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• What kind of language will replace C++ as C++ replaced C ? [closed]

  - by jokoon

  I think I'm not totally wrong when thinking that C++0x (or C++1x) is still C++, just better, with functionnalities coming from boost. I can't stop thinking that computer sciences, even with all that has been made so far, have to evolve again. I don't really like D since it just try to be some sort of "what C++ should have been", and Go seems to be too sophisticated when I dig a little into it, especially after watching some presentation video like this one http://www.youtube.com/watch?v=rKnDgT73v8s The first thing that come into my mind is a new kind of syntax to directly handle specific datatypes and containers such as map, vectors, queues... What kind of things are researchers thinking about ? What are the real features that could make C++ better or a new C-like language could invent ? Does Go features such things ? Would there be a new kind of syntax that would "unbloat" C++ while keeping its advantages ? Could C++ have some of the interesting stuff of languages such as C# and ObjC ? EDIT: Please consider that I'm talking about a system language, not a VM/CLI/bytecode thing.

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• Transition from 2D to 3D Game development [closed]

  - by jakebird451

  I have been working in the 2D world for a long time from manual blitting in windows to SDL to Python (pygame, pyopengl) and a bunch in between. Needless to say I have been programming for a while. So a while ago I started to program in OpenGL via C++ on my Mac. I then got a little intricate with my work after a while (3D models with skeleton structure and terrain development). After a long time of tinkering, I stopped due to the heavy work just to yield a low level understanding of how OpenGL works. Still interested in Graphics and Game Development I went on a search for a stable game engine with some features to grow on. Licence Requirement: Anything other than GPL (LGPL will do) OS Requirement: Mac & Windows Shader: GLSL or CG (GLSL preferred due to experience) Models: Any model structure with rigging (bone) support & animation I am looking at http://www.ogre3d.org/ currently and am starting to meddle around with some examples. However I am a little reluctant to spend a lot of time on it only to yield another dead end. So instead of falling down a spiraling black pit, I am posting my question to you guys to lead me in the right direction based on my requirements. How was your experience with the engine you recommend? Is it well documented? Does it have well documented examples? Any library requirements (Boost, libpng, etc)?

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