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• How to keep groups when pulling with git

  - by mimrock

  I have a staging site that is a working directory of a git repository. How to set up git to let a developer pull out a branch or release without changing the group of the modified files? An example. Let's say I have two developers, robin and david. They are both in git-users group, so initially they can both have write permissions on site.php. -rw-rw-r-- 1 robin git-users 46068 Nov 16 12:12 site.php drwxrwxr-x 8 robin git-users 4096 Nov 16 14:11 .git After robin-server1$ git pull origin master: -rw-rw-r-- 1 robin robin 46068 Nov 16 12:35 site.php drwxrwxr-x 8 robin git-users 4096 Nov 16 14:11 .git And david do not have write permissions on site.php, because the group changed from 'git-users' to 'robin'. From now on, david will get a permission denied, when he tries to pull to this repository.

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• Developing professionally for both iOS, Android, web - an insight

  - by Scott Roberts

  This is not really a question on how to develop for both, I know various cross platform ways and so on. But I more want to know from developer standpoint how hard it is to basically develop iOS, Android and web apps? I am currently in my first job as a mobile/web developer. I have already developed my first iPhone/iPad app and now I have to develop the app for android because the web version I tried just didn't perform as well as needed and web databases just did not seem to make the cut. But I am not sure it's possible to be good at developing all 3 in terms of remembering all the api's etc. I wouldn't say I have an issue with the programming languages just how to use the api's for the various platforms. Also, all the other languages I look at, in my spare time, just feel like I am spreading myself to thin. Is it feasible for one person to be developing ios, android and web apps? Should I think about reducing it to iOS and web based apps? I develop everything by myself, so I have no one to discuss what the best solutions are for everything and I am just trying to workout as I go along. So any cross platform developers out there? Do companies have different teams for different platforms? Any insight would just help me get my head together. Hopefully this question makes sense.

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• How do search engines handle hyphenated words?

  - by NinjaKC

  I am not sure my title fully explains what I mean. I thought this might be an interesting question. If I had a set of keywords, broken with a dash or 2, will search engines consider the dashed split keyword as maybe a full keyword? Say I have a site that sort of breaks words down, like the dictionary sites do. So a keyword for that page, might end up in the page, and / or the URL, as broken by dashes. Key-word = keyword Co-op-er-at-ive = cooperative Pho-to-gra-phy = Photography www.example.com/key-word/ www.example.com/co-op-er-at-ive/ www.example.com/pho-to-gra-phy/ I know search engines will consider a dash (at least Google) as a space, and understand it as multiple words. But in the English language, a dash can also break a word down (at least I think it can, can't it?), so will search engines also take this into consideration? I did a 'little' research, I Googled some words and placed random dashes, and it returned the words I searched for, but this could be considered a typo from the user on Google's search end, so really I am wondering if I can purposely put a dash in a keyword, and have the search engine spiders still catch that keyword as the real word without dashes? I've done a little Googling and looking here on Stackoverflow, but everything comes down to dashes for multiple words, not really the specific thing I'm trying to figure out. Hopefully that makes sense, I am not an expert in SEO, yet, but get the basics and have been playing, and this is just really a random question to satisfy my knowledge of playing :P

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• Going to directory using bash variables doesn't work when directory names have spaces

  - by gsingh2011

  Let's say I want to store the following command in a variable cd "/cygdrive/c/Program Files/" So I do this dir="cd \"/cygdrive/c/Program Files/\"" That should store the command to navigate to the Program Files directory, so when I type $dir it takes me to that directory. To check that the quotations have been properly escaped, I type echo $dir which gives me cd "/cygdrive/c/Program Files/" So everything should be working fine. However, when I type, $dir I get bash: cd: "/cygdrive/c/Program: No such file or directory What am I doing wrong? I'm using Cygwin, but I assume this problem applies to bash in general.

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• Caching strategies for entities and collections

  - by Rob West

  We currently have an application framework in which we automatically cache both entities and collections of entities at the business layer (using .NET cache). So the method GetWidget(int id) checks the cache using a key GetWidget_Id_{0} before hitting the database, and the method GetWidgetsByStatusId(int statusId) checks the cache using GetWidgets_Collections_ByStatusId_{0}. If the objects are not in the cache they are retrieved from the database and added to the cache. This approach is obviously quick for read scenarios, and as a blanket approach is quick for us to implement, but requires large numbers of cache keys to be purged when CRUD operations are carried out on entities. Obviously as additional methods are added this impacts performance and the benefits of caching diminish. I'm interested in alternative approaches to handling caching of collections. I know that NHibernate caches a list of the identifiers in the collection rather than the actual entities. Is this an approach other people have tried - what are the pros and cons? In particular I am looking for options that optimise performance and can be implemented automatically through boilerplate generated code (we have our own code generation tool). I know some people will say that caching needs to be done by hand each time to meet the needs of the specific situation but I am looking for something that will get us most of the way automatically.

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• Reading source code to learn

  - by perl.j

  As you develop as a programmer, IMO, you begin to see different practices, different Algorithms, and "more than one way to do it". Seeing this code can be a great learning experience for you, even though you did not write the code. But is doing this only going to confuse you? For example, let's say you have a library in any language that was created by a colleague, and you have been using it for a while. You decide to look at the actual source code, regardless of how extensive it is, and get a better look at how this library is written. For the sake of example, the function you use most often from this library is the max function, which finds the largest of two numbers. But this function is a lot more complicated than it needs to be. The way it is written is confusing the heck out of you, and you don't know how this works. Will this make you a better programmer, because you realize how complicated it is for such a simple function, or will it make you a worse coder because you feel less confidant? So my question, in general, is does reading source code make you a better programmer and if so how? If not why do people still do it?.

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• Websphere SSL handshake with active directory cluster

  - by ring bearer

  We have a WebSphere based application that uses Active Directory(AD) based security configurations. Under WebSphere "Global security" we have configured the active directory server and connection parameters. Active directory server is actually a cluster of four servers, say, serverdc01, serverdc02,serverdc03 and serverdc04. Each of these servers have their own root certificate with CN=serverdc01, CN=serverdc02 ..so on. So to set up SSL communication, I need to retrieve certificate of active directory and save it in WebSphere's trust store. When I retrieve certificate by putting AD server name, port and retrieve certificate I randomly get certificate of one of the serverdc01,serverdc02 ... Then I save that certificate to trust store. Question is : Do I have to save certificate from each of the serverdc01,serverdc02 ...in cluster to WebSphere's trust store? What are general strategies so that each server in the cluster does not require its own root certificate?

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• How should I share variables between instances/classes?

  - by tesselode

  I'm making a game using LOVE, so everything is programmed in Lua. I've been experimenting with using classes and object orientation recently. I've found out that a nice system to use is having most of the game's code in different classes, and having a table of instances with all of the instances of any class in it. This way, I can go through every instance of every class and update and draw it by calling the same function. There is a problem, though. Let's say I have an instance of a player with variables for health and recharge time of a weapon. I also have a master instance which is responsible for drawing the HUD. How can I tell the master instance what the player's health is? Bad solutions: Assuming that the player instance will always have the same position in the table - that can be easily changed. Using global variables. Global variables are evil. Have the master instance outside of the instances table, and have the player set variables inside the master instance, which it then uses for HUD drawing. This is really bad because now I have to make a duplicate of every variable the master instance needs. What is the proper, standard way of sharing variables between instances? Do I need to change the way I keep track of instances?

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• What is the best approach for inline code comments?

  - by d1egoaz

  We are doing some refactoring to a 20 years old legacy codebase, and I'm having a discussion with my colleague about the comments format in the code (plsql, java). There is no a default format for comments, but in most cases people do something like this in the comment: // date (year, year-month, yyyy-mm-dd, dd/mm/yyyy), (author id, author name, author nickname) and comment the proposed format for future and past comments that I want is: // {yyyy-mm-dd}, unique_author_company_id, comment My colleague says that we only need the comment, and must reformat all past and future comments to this format: // comment My arguments: I say for maintenance reasons, it's important to know when and who did a change (even this information is in the SCM). The code is living, and for that reason has a history. Because without the change dates it's impossible to know when a change was introduced without open the SCM tool and search in the long object history. because the author is very important, a change of authors is more credible than a change of authory Agility reasons, no need to open and navigate through the SCM tool people would be more afraid to change something that someone did 15 years ago, than something that was recently created or changed. etc. My colleague's arguments: The history is in the SCM Developers must not be aware of the history of the code directly in the code Packages gets 15k lines long and unstructured comments make these packages harder to understand What do you think is the best approach? Or do you have a better approach to solve this problem?

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• Why do some bad websites rank well?

  - by BradB

  Consider the following scenario: you are pitching SEO/Website Optimisation to a prospective client and you explain to them the importance of great copy and content, how acquiring links (ethically) can increase page rank, why the quality of the HTML build matters (H1, H2 tags, w3c validation etc), why keyword research is beneficial, you may drop in a few Google Webmaster Guideline or Matt Cutts references to back up your claims and rubbish the "back hat" approach as being no longer effective for good measure. Your advice is ethical and in the eyes of best practices, spot on. Then, the client points out to you some of their long established competitors on Google and you see these competitor websites ranking in the top spots (1 to 3) for medium to highly competitive search phrases that your client wants to compete for. These websites totally contradict your ethical approach and pretty much violate every best practice previously noted. They even out perform other "white hat" competitors who are in accordance with the above guidelines. I experienced this today. One of these well ranking websites had: About six microsites with more or less the same copy and a slightly varied layout Little or not textual content I would almost say duplicate content across the sites, but there was so little of it it could barely qualify for being duplicate All the content in Flash (with a music track that kicked in on each page load, not so much of an SEO issue - but it helps paint the picture) Keyword stuffing behind the Flash file with a bunch of black text on black background in the style of keyword 1 keyword 2,keyword1,keyword 2,keyword 2 keyword 3 and so on... The exact keyword stuffed combination present on every page of the website A bunch of clearly self made links from poor quality forums and directories with little or no Page Rank Links exchanged across the microsites How do you explain your way out of this when this hard evidence is sat in front of you undermining your great pitch?

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• Windows 7 Open File Security Warning

  - by Lucy

  I downloaded something and now, it is show this open file security warning. I have searched but I have only found how to disable security warnings globally. I only want to say NO forever to this warning, but it keeps showing up whenever Windows starts. The "Name" and "From" are: "C:/Users/MyUser/AppData/Local/Temp/Windows-Update.exe" I cannot even find that folder and file! I don't really know what was downloaded, I am helping someone else. (I am not a Windows user, so I am very lost here)

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• Frequent grub rescue error: unknown filesystem

  - by user3215

  It's really frustrating. Three week's back story: I faced the following error on ubuntu 10.04 LTS Desktop, error : unknown filesystem grub rescue> I tried many solutions online apart from 1 and 2 and eventually I could not boot my system at all. Trying those solutions could not completely fix it and then I had to face initramfs(could not remember exact error). As I could not fix, a week back I did a fresh install of Ubuntu 12.04 Desktop and after a week i.e, now, I got the same grub rescue> error. Could anybody tell me what's the reason behind this error?. Is there any problem with the Ubuntu or it's a problem at my side due to some reason?. My machine description: I have two hard disks, windows is installed on one hard disk and on another it's Ubuntu. I installed the operating systems(vista, ubuntu) such a way one is not known to another, I mean to say, I'll unplug one hard disk and install the Ubuntu and similarly I'll unplug the ubuntu hard disk, installed the vista on another hard disk, generally I do(I actually don't want to run into grub/boot.ini issues installing OSs connecting both the hard disks). When ever I power on the computer windows will boot by default, and I'll generally boot to ubuntu by pressing F8 and selecting the ubuntu hard disk. Any help is greatly appreciated!. Thank you!

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• Creating Custom validation rule and register it

  - by FormsEleven

  What is Validation Rule? A validation rule is a piece of code that performs some check ensuring that data meets given constraints.In an enterprise application development environment, often it might require developers to have validation be performed based on some logic at several places across projects. Instead of redundant validation creation, a custom validation rule provides a library with a validation rules that can be registered and used across applications.A custom Validation is encapsulated in a reusable component so that you do not have to write it every time when you need to do input validation. Here is how we can easily implement a custom validation that checks for name of an employee to be "KING" For creating a custom Validation , 1.         Create Generic Application Workspace "CustomValidator" with the project "Model" 2.         Create an BC4J based on emp table. 3.         Create a custom validation rule.In EmpNamerule class, update the validateValue(..) method as follows:  public boolean validateValue(Object value) { EntityImpl emp = (EntityImpl)value; if(emp.getAttribute("Ename").toString().equals("KING")){ return false; } return true; } Create ADF Library: Next step would be to create ADF library. Create ADF library with name lets say testADFLibrary1.jarRegister ADF Library Next step is to register the ADF library , so that its available across the applications. Invoke the menu "Tools -> Preferences"Select the option "Business Components -> Registered Rules" from left paneClick on button "Pick Library". The dialog "Select Library" comes up with  the user library addedAdd new library' that points to the above jarCheck the checkbox "Register" and set the name for the rule Sample UsageHere is how we can easily implement a validation rule that restrict the name of the employee not to be "KING".Create new Application with BC4J based on EMP table.Create new validation under Business rule tab for Ename & select the above custom validation rule.Run the AppModule tester.

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• Visual Studio Paired Editor Panes

  - by Chumpy

  Is there any way to make Visual Studio have "paired" editor panes, somewhat like XCode's Assistant Editor feature? More specifically, I'd like to replicate the XCode feature of having a .cpp file's .h partner be automatically open in an adjacent editor panel. So, when a .cpp file is opened in a text editor panel (let's say, on the left of the screen), its analogous .h file will open in another panel (on the right). That way both can be edited on the same screen at the same time, without the need to manually place both files in their respective editor panes. Hope that makes sense, I'm not really sure what terminology to use in order to search for existing solutions.

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• CRM Evolution 2014: Mediocrity is the New Horrible in Customer Service

  - by Tuula Fai

  "Mediocrity is the new horrible in customer service," Blair McHaney, Gold's Gym Almost everyone knows that customers' expectations have risen. But, after listening to two days of presentations at CRM Evolution, I think it’s more accurate to say that customers' expectations have skyrocketed. Fortunately, most companies have gotten the message and are taking their customer service to a higher level. For those who've been hesitant to 'boldly go where their customer service organization has not gone before,' take heart. I’ve got some statistics that will encourage you to take those first few steps. Why should I change? By engaging customers online, ancestry.com achieved a 99.5% customer satisfaction score (CSAT) while improving retention and saving millions on greater efficiency, including a 38%-50% drop in inbound calls and emails.1 By empowering employees to delight customers, Gold’s Gym achieved a 77.5% Net Promoter Score (NPS) and 22% customer churn rate. No small feat when you consider the industry averages are 40% NPS and 45% churn.2 By adapting quickly to social media, brands like Verizon have benefited from social community members spending 2.5x-10x more than average customers.3 ‘The fierce urgency of now’ is upon us in customer service. You can take your customer service to a higher level! To find out more, click here CRM Evolution Customer Service Experience Footnotes: 1. Arvindh Balakrishnan, Is Your Customer Service Modern?2. Blair McHaney, Wire Your Organization with Customer Feedback3. Becky Carroll, The Power of Communities for Improving the Service Experience and Building Advocates

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• Executing Components in an Entity Component System

  - by John

  Ok so I am just starting to grasp the whole ECS paradigm right now and I need clarification on a few things. For the record, I am trying to develop a game using C++ and OpenGL and I'm relatively new to game programming. First of all, lets say I have an Entity class which may have several components such as a MeshRenderer,Collider etc. From what I have read, I understand that each "system" carries out a specific task such as calculating physics and rendering and may use more that one component if needed. So for example, I would have a MeshRendererSystem act on all entities with a MeshRenderer component. Looking at Unity, I see that each Gameobject has, by default, got components such as a renderer, camera, collider and rigidbody etc. From what I understand, an entity should start out as an empty "container" and should be filled with components to create a certain type of game object. So what I dont understand is how the "system" works in an entity component system. http://docs.unity3d.com/ScriptReference/GameObject.html So I have a GameObject(The Entity) class like class GameObject { public: GameObject(std::string objectName); ~GameObject(void); Component AddComponent(std::string name); Component AddComponent(Component componentType); }; So if I had a GameObject to model a warship and I wanted to add a MeshRenderer component, I would do the following: warship->AddComponent(new MeshRenderer()); In the MeshRenderers constructor, should I call on the MeshRendererSystem and "subscribe" the warship object to this system? In that case, the MeshRendererSystem should probably be a Singleton("shudder"). From looking at unity's GameObject, if each object potentially has a renderer or any of the components in the default GameObject class, then Unity would iterate over all objects available. To me, this seems kind of unnecessary since some objects might not need to be rendered for example. How, in practice, should these systems be implemented?

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• Keeping Aspect Screen Ratio While Stays in Center

  - by David Dimalanta

  I sqw and I tried this suggestion on PISTACHIO BRAINSTORMIN* on how to make a good and adaptive screen ration. For every different screen size, let's say I put the perfect circle as a Texture in LibGDX and played it on screen. Here's the blueberry image example and it's perfectly rounded: When I played it on the Google Nexus 7, the circle turn into a slightly oblonng shape, resembling as it was being flatten a bit. Please observe this snapshot below and you can see the blueberry is almost but slightly not perfectly rounded: Now, when I tried the suggested code for aspect ratio, the perfect circle retained but another problem is occured. The problem is that I expecting for a view on center but instead it's been moved to the right offset leaving with a half black screen. This would be look like this: Here is my code using the suggested screen aspect ratio code: Class' Field // Ingredients Needed for Screen Aspect Ratio private static final int VIRTUAL_WIDTH = 720; private static final int VIRTUAL_HEIGHT = 1280; private static final float ASPECT_RATIO = ((float) VIRTUAL_WIDTH)/((float) VIRTUAL_HEIGHT); private Camera Mother_Camera; private Rectangle Viewport; render() // Camera updating... Mother_Camera.update(); Mother_Camera.apply(Gdx.gl10); // Reseting viewport... Gdx.gl.glViewport((int) Viewport.x, (int) Viewport.y, (int) Viewport.width, (int) Viewport.height); // Clear previous frame. Gdx.gl.glClearColor(0, 0, 0, 1); Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT); show() Mother_Camera = new OrthographicCamera(VIRTUAL_WIDTH, VIRTUAL_HEIGHT); Was this code useful for screen aspect ratio-proportion fixing or it is statically dependent on actual device's width and height? *see http://blog.acamara.es/2012/02/05/keep-screen-aspect-ratio-with-different-resolutions-using-libgdx/#comment-317

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• SQLAuthority News – 6th Anniversary and 50 Million Views and Over 2300 Blog Posts – Thank You Thank You

  - by pinaldave

  Six years ago, I started this SQLAuthority.com blog. There are so many things I want to say today – it is very very emotional. Instead of writing long I am including few images and cartoons. Last month we have also reached 50 Million Total Views on this blog. Here is the screen captured at that time. Click Image to Enlarge In 6 years there are total 2192 days (including 2 leap year day) and my total blog post count is 2300. That means I have been blogging more than 1 blog post every day. Here is the quick glance to all the numbers. Here you can find the list of all the 2300 blog posts. I am very glad to see my many of the friends stay in USA, India, United Kingdom, Canada and Australia in that order. You can see the geographic distribution of the support I receive on the blog from worldwide. On this day I would like to call out one 2 individuals who contribute equally or more in my success. When I started this blog 6 years ago, I was walking alone. After 2 years my wife Nupur joined my journey and 3 years later my daughter Shaivi joined the journey. Here is the example of the common conversation among us almost every day - Shaivi: Daddy, play catch-catch. Nupur: Shaivi, daddy will play with you once he finishes tomorrow’s blog. Shaivi: Daddy, Finish Blog. Okey. I play catch-catch (alone). SQLAuthority Family Well, thank you very much! We all love you! Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: About Me, PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, SQLAuthority News, SQLServer, T SQL, Technology

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• How to copy all recovery points to another drive? - Norton Ghost

  - by chobo2

  Hi I have Norton Ghost and I have 2 drives dedicated to backing up my files. One is an external drive the other is internal. Now my internal drive has filled up with backups and I now want to copy all those backups to my external drive. However it seems to want me to do it one by one. Can I do it like a batch or some mass copy so it does one after another so I can say have my computer all night on? My plan was to fill up my internal drive - copy it to my external drive - fill up my external drive - copy it to my external drive. Once my external drive would be filled up I then would start deleting the oldest backups but that probably would give me like 6 months of backs that I can back through if I would ever need too.

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• links for 2011-02-01

  - by Bob Rhubart

  OTN Virtual Developer Day for WebLogic Server and WebLogic Developer Broadcasts (WebLogic Server) Mike Lehmann with details on a whole bunch of upcoming online events for those with an interest in WebLogic. (tags: WebLogic oracle otn) IOUC Summit: Open Arms and Cheese Shoes (Oracle Technology Network Blog (aka TechBlog)) Event highlights from OTN head honcho Justin Kestelyn. (tags: oracle otn IOUC) Prognostications for the Future of BI (BI & Analytics Pulse) Jacqueline Coolidge looks into the Business Intelligence crystal ball. (tags: oracle otn businessintelligence) Edwin Biemond: Some handy code for your managed Beans ( ADF & JSF ) "Back in 2009, I already a made a blogpost about some handy code which you can use in your ADF Web Application. You can say this blogspot is part 2 and here I will show you the code, I use most in my own managed Beans." - Oracle ACE Edwin Biemond (tags: java SOA oracle oracleace) Leon Smiers: Process, content and collaboration "Taking a look at today’s business, most companies still have a lot [to do] as far as adapting to and leveraging Web 2.0 possibilities is concerned." - Leon Smiers (tags: e20 oracle enterprise2.0) Antony Reynolds: Using the SOA-BPM VIrtualBox Appliance Antony says: "Recently I have been setting up some machines for fellow engineers. My base setup consists of Oracle Enterprise Linux with Oracle Virtual Box." (tags: oracle otn soa virtualization virtualbox bpm) Oracle Weblogic Server Gets Smart with CERN | SiliconANGLE CERN, the home to European particle physics, chose Oracle Weblogic Server to handle technical applications and copious HR and administrative Java-based web applications used by CERN employees. Oracle got its start by scheduling the interventions of the Large Hadron Collider (LHC). (tags: Weblogic oracle CERN) Oracle Virtual Developers Day: WebLogic - February 10, 2011 Virtual Developer Day: WebLogic - February 10, 2011. Speakers: Frances Zhao - Principal Prod Mngr, Java Platform Group; Will Lyons - Dir, WebLogic Server Prod Mgmt; Steven Button - Principal Prod Mngr, WebLogic Server; Pyounguk Cho - Principal Prod Mngr, Java Platform Group. (tags: oracle otn weblogic java)

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• How can I mitigate DNS Server outages?

  - by Eric Belair

  Let's say I have a root domain of "mysite.com". That domain and its sub-domains have DNS served by an external service - let's call them Setwork Nolutions. If this external company is hit with a DDoS attack, my interally-hosted websites under this domain are no longer accessible at "mysite.com" or "*.mysite.com", even though the website(s) is/are fully up and operational. How can I mitigate such a problem so as to keep end users happy? The only solution others at my company have come up with is to create a second domain - i.e. "mysite2.com", and host its DNS at another company, and then communicate to all end users that this is the website they should use. I think this is ridiculous, and just leads to a bunch of other problems. I'd like to find a solution where we can point to the same website with the same URL without the original DNS host being operational. Any thoughts?

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• Is it useful to unit test methods where the only logic is guards?

  - by Vaccano

  Say I have a method like this: public void OrderNewWidget(Widget widget) { if ((widget.PartNumber > 0) && (widget.PartAvailable)) { WigdetOrderingService.OrderNewWidgetAsync(widget.PartNumber); } } I have several such methods in my code (the front half to an async Web Service call). I am debating if it is useful to get them covered with unit tests. Yes there is logic here, but it is only guard logic. (Meaning I make sure I have the stuff I need before I allow the web service call to happen.) Part of me says "sure you can unit test them, but it is not worth the time" (I am on a project that is already behind schedule). But the other side of me says, if you don't unit test them, and someone changes the Guards, then there could be problems. But the first part of me says back, if someone changes the guards, then you are just making more work for them (because now they have to change the guards and the unit tests for the guards). For example, if my service assumes responsibility to check for Widget availability then I may not want that guard any more. If it is under unit test, I have to change two places now. I see pros and cons in both ways. So I thought I would ask what others have done.

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• IIS6 won't respond to a request for a JS file after accessing through subdomain

  - by James

  I have a site running of www.mysite.com for example. There is a JS file I'm accessing: www.mysite.com/packages.js The first and subsequent times that I acccess that packages.js file causes no problems........until I access a sub-site like this: sub-site.mysite.com This naturally makes a request for that same packages.js....but the site hangs as it just keeps waiting and waiting for that JS file. Going back to the main site, the problem perists there. If I then rename packages.js to say packages2.js it then works in the same way. I can access the file on the main site but after I try and access it through a sub-site IIS then fails to respond to a request for that file. I realise this explanation is a little vague, but has anyone seen this sort of behaviour before? Thanks very much, James.

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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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• Memory concerns while plotting escape from DLL Hell in Delphi

  - by Peter Turner

  I work on a program with about 50 DLLs that are loaded from one executable, it's an old organically grown program where the only rationale for creating a new DLL is that one previously didn't exist to fill a given need. (and namespaces didn't exist in Delphi so it never crossed our mind to make dll1.main.pas, dll2.main.pas or something even more unique) What we want to do is consolidate all these DLLs into one executable, since none of them are used out of the program, there shouldn't be much of a problem. The concern my boss has is that if we did this, the memory overhead for terminal server clients would go through the roof. So, I've stepped through enough initialization code to know that lots of stuff is done every time a DLL is loaded in to memory, but say I've got a project with about 4000 files, and 50 dlls, 10 of which are probably utilized by any one user in any one session of the program. The 50 dlls are about 2/3rds form files, if not more, but beyond that there's not a lot of other resources being loaded (only a few embedded pictures, icons, cursors, etc..). If I loaded all these files in to memory, how much memory is used per unit? how much is used per class? How do I keep the overhead down? and what is the biggest project one can reasonably expect to build with Delphi? This tidbit won't help answering, but I think it might clarify what my boss is worried about, we currently start our program at about 18megs, normal working conditions are usually less than 40 megs, he thinks it could climb as high as 120 megs.

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