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• Scaling SQL Server in Azure

  - by simonsabin

  If you’ve been reading the wires about SQL Azure you will have seen a change to the tiers that are being offered. Thsi is all so that you can get a more predictable performance level from the platform and also to enable Azure to manage the resources. You now have 3 categories basic, standard and premium, and within those you have some other levels. This enables you to start your service at a low level and then as required request more capacity (through the portal or API).   For details on the...(read more)

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• How to Draw Lines on the Screen (Part 2)

  - by Geertjan

  In part 1, I showed how you can click on the screen to create widgets and then connect those widgets together. But that's not really drawing, is it? (And I'm surprised nobody made that point in the comments to that blog entry.) Drawing doesn't really revolve around connecting dots together. It's more about using a free-flow style and being able to randomly write stuff onto a screen, without constraints. Something like this: I achieved the above by changing one line of code from the original referred to above. Instead of using a "mousePressed" event, I'm now using a "mouseDragged" event. That's all. And now the widgets are created when I drag my mouse on the scene. (I removed the rectangular select action, since that's also invoked during dragging and since that doesn't apply to the above scenario.) Now, the next step is to rewrite the NetBeans Platform Paint Application Tutorial, so that the Visual Library is used. That would be pretty cool.

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• How do I make 3finger multitouch work on Samsung 530?

  - by RiaD

  I have Samsung 530U4C. How can I configure 3-finger gestures to work? Choosing next photo using 3 finger "scrool" worked in Windows 7. If I use synclient TapButton3=2 I may use it as medium mouse button, but there's problem: it gets cancelled after reboot, and as I read over the Internet, sometime else. Moreover, it would be great to see all gestures my laptop support and configure them all as I need. I find some info about touchegg, but I didn't manage to understand what it exactly is and even run it. Two-finger gestures works fine(configured using System setting menu)

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• Load Balancing and High Availability for Web Site

  - by nzgirl

  We've developing a database driven (70%/30% read/write load) website using C#.NET, IIS and MS SQL Server 2008 to be hosted on Windows 2008. Due to contractual reasons our setup has to be hosted on our own physical/virtual servers instead of a cloud solution at this stage. Could someone outline or link to some best practices that would provide both high availability (priority at the moment) and eventually load balancing for our site. We're probably looking at some sort of 2 SQL server mirrored system and 2 ISS web servers to start with. Thanks in advance.

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• Static vs. dynamic memory allocation - lots of constant objects, only small part of them used at runtime

  - by k29

  Here are two options: Option 1: enum QuizCategory { CATEGORY_1(new MyCollection<Question>() .add(Question.QUESTION_A) .add(Question.QUESTION_B) .add...), CATEGORY_2(new MyCollection<Question>() .add(Question.QUESTION_B) .add(Question.QUESTION_C) .add...), ... ; public MyCollection<Question> collection; private QuizCategory(MyCollection<Question> collection) { this.collection = collection; } public Question getRandom() { return collection.getRandomQuestion(); } } Option 2: enum QuizCategory2 { CATEGORY_1 { @Override protected MyCollection<Question> populateWithQuestions() { return new MyCollection<Question>() .add(Question.QUESTION_A) .add(Question.QUESTION_B) .add...; } }, CATEGORY_2 { @Override protected MyCollection<Question> populateWithQuestions() { return new MyCollection<Question>() .add(Question.QUESTION_B) .add(Question.QUESTION_C) .add...; } }; public Question getRandom() { MyCollection<Question> collection = populateWithQuestions(); return collection.getRandomQuestion(); } protected abstract MyCollection<Question> populateWithQuestions(); } There will be around 1000 categories, each containing 10 - 300 questions (100 on average). At runtime typically only 10 categories and 30 questions will be used. Each question is itself an enum constant (with its fields and methods). I'm trying to decide between those two options in the mobile application context. I haven't done any measurements since I have yet to write the questions and would like to gather more information before committing to one or another option. As far as I understand: (a) Option 1 will perform better since there will be no need to populate the collection and then garbage-collect the questions; (b) Option 1 will require extra memory: 1000 categories x 100 questions x 4 bytes for each reference = 400 Kb, which is not significant. So I'm leaning to Option 1, but just wondered if I'm correct in my assumptions and not missing something important? Perhaps someone has faced a similar dilemma? Or perhaps it doesn't actually matter that much?

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• How to transfer a website hosted online to my Virtual Host

  - by user831740

  I'm doing some work on a webpage, meaning I gotta modify a few things. As a result of this I installed apache and all the things that come associated with it, and also installed Joomla, and I got everything running well. My problem is, I need to make apache run this website locally, so I downloaded the public_html folder from the FTP server on my website, but I have absolutely no idea how to implement the website in order to make it run on apache. I've read a few guides, but they all tell me how to create a new website instead of helping me host a website already done.

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• Schedule robocopy run

  - by xeonet

  I have Windows Server 2008 Enterprise. I need to copy files from network folder, I connected as a Z: drive. I need to schedule the copy. In scheduler I run it every 5 minutes. robocopy.exe Z:\ C:\destination /E I've tried to put it to .bat file, tried to write in scheduler, it doesn't help. I've set run with highest privilegies... Task Scheduler successfully completed task "\RoboCopy" , instance "{dd2d2d1c-4ef1-4e30-b226-4a77aa52dab9}" , action "C:\Windows\SYSTEM32\cmd.exe" with return code 16.

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• Unable to debug javascript?

  - by linkme69

  I’m having some problems debugging an encoded javacscript. This script I’m referring to given in this link over here. The encoding here is simple and it works by shifting the unicodes values to whatever Codekey was use during encoding. The code that does the decoding is given here in plain English below:- <script language="javascript"> function dF(s){ var s1=unescape(s.substr(0,s.length-1)); var t=''; for(i=0;i<s1.length;i++)t+=String.fromCharCode(s1.charCodeAt(i)-s.substr(s.length-1,1)); document.write(unescape(t)); } I’m interested in knowing or understanding the values (e.g s1,t). Like for example when the value of i=0 what values would the following attributes / method would hold s1.charCodeAt(i) and s.substr(s.length-1,1) The reason I’m doing this is to understand as to how a CodeKey function really works. I don’t see anything in the code above which tells it to decode on the basis of codekey value. The only thing I can point in the encoding text is the last character which is set to 1 , 2 ,3 or 4 depending upon the codekey selected during encoding process. One can verify using the link I have given above. However, to debug, I’m using firebug addon with the script running as localhost on my wamp server. I’m able to put a breakpoint on the js using firebug but I’m unable to retrieve any of the user defined parameters or functions I mentioned above. I want to know under this context what would be best way to debug this encoded js.

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• How to setup a fake SMTP server to catch all mails?

  - by Richo

  I'm looking for an smtp service that essentially obeys the RFC, except rather than sending mail it simply logs to a file [date] sent mail to <address> Or whatever. I can bash this together with the bare minimum of functionality I need in python in about half an hour I reckon but if there's an existing project that works better I'd rather use that. The reason for needing it is debugging an app that keeps sending 7* the amount of mail it's supposed to. Slightly offtopic, but if there isn't already such a project, and I write it, is this something other people would use? If I publish the source will it get used? EDIT: And already asked: http://stackoverflow.com/questions/1006650/dummy-smtp-server-for-testing-apps-that-send-email

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• Webcam Q&A page with guest "speakers" ideas?

  - by myladeybugg

  I want to host one way webcam Q&A's/AMA's and embed it on my sites webpage. I must be able to have specified hosts for these Q&A's connect quickly and easily to the webpage, and read user posted messages (questions) for interaction. I know there are some systems out there, like tinychat, but I'm unaware if there is anything exactly used for what I am looking for. Perhaps requiring a specific account/password before allowing streaming on the page, where I can email the host a password or directions to create an account to begin live streaming. Most of these people doing the question and answers on webcam will have little technical knowledge, so extra cookie points goes to ease of use! Thanks for ideas in advance! PS: I apologize if this is the incorrect section for posting this question, this is my first.

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• What reference point/ tutorial could I use to help me make a "Ball rolling" game in flash?

  - by user1798964

  I am a complete newbie to programming, only took high school Computer science so I kind of know what im doing, I just want to know how I can make a ball rolling game that I want to make, could anyone show me an example of a good "ball rolling game" that has good physics and everything, I have tried to use Box2D for the physics portion of the game, but I found that using that is just code and I can't figure out how to make the graphics and details of the world I want to make in my game, all I would like to do would have a game that has the collision detection and physics of box2d only apply to one ball in it and use the left and right keys to move it. sorry if I am too unclear, if anyone could show a tutorial or something to me on how to make a proper "Ball rolling" game that has good physics that would be appreciated, thank you for taking the time to read this

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• PHP session files have permissions of 000 - They're ununsable

  - by vanced

  I kept having issues with a Document Management System I'm trying to install as, at the first step of the installation process, it would error with: Warning: Unknown: open(/tmp/sess_d39cac7f80834b2ee069d0c867ac169c, O_RDWR) failed: Permission denied (13) in Unknown on line 0 Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/tmp) in Unknown on line 0 I looked in /tmp and saw the sess_* files have the following permissions ---------- 1 vanced vanced 1240 Jan 20 08:48 sess_d39cac7f80834b2ee069d0c867ac169c All the session files look like this. So obviously, they're unusable by PHP and it's causing me lots of problems. How can I get PHP to set the correct permissions? I've tried changing the directory which php.ini uses to /tmp/phpsessions and the same thing occurs. The directories are a+rwx.

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• Hello, World

  - by KyleBurns

  This is the obligatory first posting in which I describe to you my plans for this blog and why you should read it. My plan is very simple – to share with you (and possibly myself along the way) relevant information about tools and techniques that you can use (or perhaps shouldn’t use) to solve problems with code. Most of my employers have paid me to develop solutions using Microsoft tools and technologies, so you will see them heavily represented here. I also plan to avoid having this blog function simply as a link aggregator, so I promise that it will be rare for you to find entries in my blog consisting solely of a link to someone else’s blog or a webcast – if I do have such links they will at least be accompanied by commentary. This is my first venture into the world of blogging, so please let me know how I'm doing (be nice) and feel free to suggest/request topics for future entries.

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• Reliance on the compiler

  - by koan

  I've been programming in C and C++ for some time, although I would say I'm far from being expert. For some time I've been using various strategies to develop my code such as unit tests, test driven design, code reviews and so on. When I wrote my first programs in BASIC I typed in long listings before finding they would not run and they were a nightmare to debug. So I learnt to write a small bit and then test it. These days I often find myself repeatedly writing a small bit of code then using the compiler to find all the mistakes. That's OK if it picks up a typo but when you start adjusting the parameters types etc just to make it compile you can screw up the design. It also seems that the compiler is creeping into the design process when it should only be used for checking syntax. There's a danger here of over reliance on the compiler to make my programs better. Are there better strategies than this ? I vaguely remember some time ago an article on a company developing a type of C compiler where an extra header file also specified the prototypes. The idea was that inconsistencies in the API definition would be easier to catch if you had to define it twice in different ways.

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• How Microsoft copy the result from user for Bing.

  - by anirudha

  from some days before i read about the problem google show with another search engine Bing who come from Microsoft. well google show that bing copycat and Microsoft show that they not. i am not known matter much more but predict something that maybe true if google are right in what they tell. if MS really copy the search from User then they use Live service who used by all user who use the internet or on the internet. see the snapshot i have in this snapshot they tell that Help improved search results,internet safety and Microsoft software by allowing Microsoft to collect and retain information about your system, the searches you do and the websites you visit. Microsoft will not use this information to personally identify or contact you. Learn more so why they need the research on what user search on internet even the not contact but user their is no reason as well as bing. well their is a example who maybe possible they  use for bing.

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• Transfer using linux ssh and maintaining permissions

  - by jbolt

  I need to transfer files across ssh to another server. The file structures are identical on both sides. I have used scp -r but that does not retain the orginal file/dir permissions. rsync does the job of keeping the permissions in tact but does not delete the files on the destination side if I want to overwrite them because of changes. I know rsync will write the changes when the source files are newer but I need it to just copy everything reguardless of the date (ie replace destination directory with the one I am moving) without having to shell into the destination first and manually delete the dir. I heard tar can do this but I can not seem to get it to work without errors. The syntax is tar -cf - /directory/directory | ssh host.name tar -xf - C /destination_directory Any help would be appreciated.

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• Web RDP not working in Ubuntu 11.10

  - by user77321

  I am not able to connect to the remote machine from Ubuntu 11.10 machine using Web RDP. The following are the details. Java Vendor: Oracle Corporation Java Version: 1.7.0_07 IVE Host: xxx.xxx.com Run Level:0, read timeout:90000 Applet is signed and trusted webRDP version: 1.0.8.16, 2011-04-14 10:34 Attempting to obtain the license from the application jar. Obtained the license from the application jar. Keyboard: IBM101 I have removed the actual host name from the above details The error message on a pop up window is Application Error UnsatisfiedLinkError Unable to load library 'libX11':liblibX11.so: cannot open shared object file: No such file or directory. This error happens soon after Applet loads. I am supposed to get a WebRDP Screen with logo then a Windows Login screen for the remote machine. ( This is working fine in Linux Mint) Anyone has experienced this problem? Any solutions?

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• Creating Java EE Projects with Maven

  - by M.C.

  I've been developing Java EE web apps with Eclipse for about a year. My employer doesn't use Maven, but the more I read about it, the more convinced I am that Maven + Hudson will be greatly beneficial for us. First, though, I have to become comfortable with those technologies in my spare time, so that I can create a proof-of-concept. Right now, I'm still a Maven newbie. Is there a set of best practices for creating Java EE web apps with Maven? For example, I could create a project with a basic archetype and then add all of the necessary JARs by putting dependencies in the POM for the servlet container, EJB, EclipseLink, etc... That might work, but it might not be the best way to do it. I'd greatly appreciate any guidance that you could provide on this topic.

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• Free course on Java Embedded on the Raspberry Pi?

  - by A Tael

  Oracle is developing a free, on-line course on developing Oracle Java Embedded applications using a Raspberry Pi as the development platform. The course teaches experienced Java SE developers how to design and develop applications using Java ME Embedded 8 EA on a Raspberry Pi with physical devices, including: switches and Light Emitting Diodes (LED); temperature/barometric pressure sensors; Global Positioning System (GPS) sensors; and system interrupt timers. Additional modules include logging, threads, network I/O, file I/O, record management service, push registry, application management services and best practices for headless embedded devices.Sounds like great fun doesn't it? Read more about the course and give us your feedback in this short survey. <<Andy>>

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• Looking for concise set of instructions for upgrading Vmware 5.1 to 5.5

  - by Michael Martinez

  I'm trying to find a set of instructions for upgrading Vmware (ESXi and Vsphere) from 5.1 to 5.5, but all I'm finding online is a bunch of separate, incomplete knowledgebase articles which is making it difficult to get an overview of what's involved. What I'd like is a single, concise document that lists the steps involved. It could be a free online article, someone's blog, a small booklet, someone here who takes the trouble to write it out. Does such a thing exist? If so, can you provide the reference or even provide the text here. I'm running a very small, simple environment consisting of two ESXi hosts and Vsphere Standard edition. Thanks.

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• 56.6 Modem with CallerID

  - by Fuod

  Does anyone still know anything about the 56.6 modems? I'm looking for one that is easy to access via C#/VB.Net, has Caller ID and is either low-profile or USB. Also that neat little feature that lets the modem block the call from the phone (pass-through) until it has received the CallerID info would be really nice! Obviously I could just go to Best Buy and get what they have but I have no way of knowing how friendly it would be to write code for and I don't want to make multiple trips returning/exchanging etc. I'm not going to be doing anything with voice or voice mail, just recording the number from CallerID. Thanks!

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• Basic/research RTS engine/model

  - by XTF

  Does a basic/research RTS engine/model exist that can be used as a basis for further experimentation/research? I'd like to avoid reinventing the wheel if possible. I'm aware of Spring Engine and Stratagus, but those are real game engines and may not be the best to experiment with and learn from. Ideally the docs for the model would answer questions like: How exactly do units move? (constant velocity? constant acceleration? constant force?) How is pathfinding handled? Does every grid cell become an A* graph node (may be expensive)? Does it consider threats? How are groups handled? (w.r.t pathfinding and movement) How is combat handled? I'm mostly interested in the low-level model details (for now), not the graphics etc. I've read a lot of the other quesions (and answers/references) tagged RTS but I haven't found my answer yet.

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• External hard disk not showing up as removable media

  - by mark

  Windows 7 Pro x64, my external hard drive is a Western Digital Carviar Black. The hard drive is connected via USB (tried all my 2.0 and 3.0 ob my Gigabyte GA-X58A-UD7) but once I initialized it in the "disk management" (or whatever the proper term is; I'm using a German edition of Windows) I have to assign it a manual drive letter. Otherwise it doesn't show up. I'm confused because usually externally connected drives (be it USB sticks or real hard disks) just show up as "Removable media", but this one doesn't. Is this OK/expected? Will there be troubles when I go to another Windows computer? I formatted the drive with quick format and NTFS. I changed the permissions to have read/write for "Everyone" on that drive. thanks

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• Why is it possible to change the password of an admin user on linux?

  - by enum

  A few days ago, a friend of mine, wanted to show me that he can use my linux even if I don't tell him my password. He entered in GRUB, selected the recovery mode option. My first problem is that he already had access to my files (read only). He tried to do passwd but failed. Then he did some kind of remount (I guess that gave him write rights) and after that he was able to change my password. Why is this possible? I personally see it a security issue. Where I work there are several people that use linux and neither of them have a BIOS password set or some other kind of security wall.

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• What are the pros & cons of these MySQL engines for OLTP -- XtraDB, PBXT, or TokuDB?

  - by Continuation

  I'm working on a social website with an approximate read/write split of 90/10. Trying to decide on a MySQL engine. The ones I'm interested in are: XtraDB PBXT TokuDB What are the pros and cons of them for my use case? A few specific questions: PBXT uses log-based structure that avoids double-writes. It sounds very elegant, but the benchmark I've seen doesn't show any/much advantages over XtraDB. Do you have any experience with PBXT/XtraDB you can share? TokuDB sounds VERY interesting. But all the benchmarks I've seen are about single-threaded bulk inserts - inserting 100M rows for example. that's not very relevant for OLTP. What about its performance with large number of concurrent threads writing and reading at the same time? Anyone has tried that?

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