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• SSL certificates with password encrypted key at hosting provider

  - by Jurian Sluiman

  We are a software company and offer hosting to our clients. We have a VPS at a large Dutch datacenter. For some of the applications, we need an SSL certificate which we'd like to encrypt with a password protected keyfile. Our VPS reboots now and then because of updates whatsoever, but that means our apache doesn't start right away because the passwords are needed. This results in downtime and is of course a real big problem. We can give the passwords to our VPS datacenter, or create certificates based on keyfiles without passwords. Both solutions seem not the best one, because they compromise the security of our certificates. What's the best solution for this issue?

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• Are Intel compilers really better than the Microsoft ones?

  - by Rocket Surgeon

  Years ago, I was surprised when I discovered that Intel sells Visual Studio compatible compilers. I tried it in particular for C/C++ as well as fantastic diagnostic tools. But the code was simply not that computationally intensive to notice the difference. The only impression was: did Intel really do it for me just now, wow, amazing tools with nanoseconds resolution, unbelievable. But the trial ended and the team never seriously considered a purchase. From your experience, if license cost does not matter, which vendor is the winner? It is not a broad or vague question or attemt to spark a holy war. This sort of question is about two very visible tools. Nobody likes when tools have any mysteries or surprises. And choices between best and best are always the pain. I also understand the grass is always greener argument. I want to hear all "what ifs" stories. What if Intel just locally optimizes it for the chip stepping of the month, and not every hardware target will actually work as well as Microsoft compiled? What if AMD hardware is the target and everything will slow down for no reason? Or on the other hand, what if Intel's hardware has so many unnoticable opportunities, that Microsoft compiler writers are too slow to adopt and never implement it in the compiler? What if both are the same exactly, actually a single codebase just wrapped into two different boxes and licensed to both vendors by some third-party shop? And so on. But someone knows some answers.

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• PostgreSQL RAID configuration

  - by Yoldar-Zi

  I'm stuck how best to configure disk array. We have Hp P2000 G3 disk array with 24 SAS physical disks 300Gb each. We need to configure this array got 2 copies of PostgreSQL 9.2 because two different system. As we know it's recommended to store database and transaction logs(pg_xlog) files on separate disks. So we must setup 4 logical disk: 2 for transaction logs with RAID 1 2 for database with RAID 10 Is this right scheme of distribution? Or may be it is best to just make one big RAID 10 with 4 logical disks?

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• Why is my fresh install of 12.04 running slow?

  - by user75129

  Hey guys I'm a new linux user, I figured it would be the best for the laptop I just purchased because it's said to be faster than Windows 7. I'm currently dual-booting with Windows 7 Professial and Ubuntu 12.04. The laptop I am using is the LG X Note P210 Specs: Intel Core i5 470UM Dual Core clocked at 1.33GHz 12.5" HD LED LCD Screen at 1366 by 768 4GB DDR3 @ 1333 MHz RAM Integrated Intel HD Graphics Card 4 Cell Battery with 3150mAh It comes loaded Windows 7 Home Premium 64-Bit, it runs fine on that but my Ubuntu 12.04 runs slower than it and I don't understand why, it definitely has decent specs to run even a 64-bit operating system and do some gaming. Granted I know it's not the best but for a laptop it does the job so Ubuntu should work especially since it's said to make older units with worse specs run even better. I'm not all that familiar with coding and all so what are things I can do to optimize speed without overclocking? Boot up is fine, its program response time I believe, once Im in the actual OS, it lags, slows down, apps stop working, take forever to load up apps.

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• Application that will tell the DNS server for my pc and network

  - by user23950

  Do you know of any application which can determine the best DNS server for my pc or network?

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• Help parsing long (3.5mil lines) text file, line by line and storing data, need a strategy

  - by Jarrod

  This is a question about solving a particular problem I am struggling with, I am parsing a long list of text data, line by line for a business app in PHP (cron script on the CLI). The file follows the format: HD: Some text here {text here too} DC: A description here DC: the description continues here DC: and it ends here. DT: 2012-08-01 HD: Next header here {supplemental text} ... this repeats over and over for a few hundred megs I have to read each line, parse out the HD: line and grab the text on this line. I then compare this text against data stored in a database. When a match is found, I want to then record the following DC: lines that succeed the matched HD:. Pseudo code: while ( the_file_pointer_isnt_end_of_file) { line = getCurrentLineFromFile title = parseTitleFrom(line) matched = searchForMatchInDB(line) if ( matched ) { recordTheDCLines // <- Best way to do this? } } My problem is that because I am reading line by line, what is the best way to trigger the script to start saving DC lines, and then when they are finished save them to the database? I have a vague idea, but have yet to properly implement it. I would love to hear the communities ideas\suggestions! Thank you.

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• Image storage social network (Host plan)

  - by Samir

  I'm wondering what the best way is to host images on a social network site. Let's say that I expect my social network to reach 500.000 users in 2 years time. That would mean that if every user uploaded about 100 images and every image is 1 MB that I will have to need: 500.000 * 100 * 1 MB = 50.000.000 MB which means 50 terabytes. I'm not sure how I can best setup my hosting plan in order to have a solid bases to store my images and eventually store video files as well. Which hosting plan would you recommend me to start with and how can I enhance the plan?

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• Switching over an email address from a distribution group to a user account in Exchange 2003

  - by Sevdarkseed

  I'm currently in a transition mode. We currently have a Distribution Group called Quotes and Orders that send out emails to several users. I'm told that a better method would be to create a user and then give access to that fictitious user's email account so that everyone would be able to see everything that goes out and is responded to in a single account. However, I'm not sure what the best method would be for creating an account and shutting down the distribution group. I'm thinking more along the lines of the steps that considered best practice to remove the email account from the distribution group and attach it to the user account. Any thoughts?

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• Effective handling of variables in non-object oriented programming

  - by srnka

  What is the best method to use and share variables between functions in non object-oriented program languages? Let's say that I use 10 parameters from DB, ID and 9 other values linked to it. I need to work with all 10 parameters in many functions. I can do it next ways: 1. call functions only with using ID and in every function get the other parameters from DB. Advantage: local variables are clear visible, there is only one input parameter to function Disadvantage: it's slow and there are the same rows for getting parameters in every function, which makes function longer and not so clear 2. call functions with all 10 parameters Advantage: working with local variables, clear function code Disadvantage: many input parameters, what is not nice 3. getting parameters as global variables once and using them everywhere Advantage - clearer code, shorter functions, faster processing Disadvantage - global variables - loosing control of them, possibility of unwanted overwriting (Especially when some functions should change their values) Maybe there is some another way how to implement this and make program cleaner and more effective. Can you say which way is the best for solving this issue?

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• Central renderer for a given scene

  - by Loggie

  When creating a central rendering system for all game objects in a given scene I am trying to work out the best way to go about passing the scene to the render system to be rendered. If I have a scene managed by an arbitrary structure, i.e., an octree, bsp trees, quad-tree, kd tree, etc. What is the best way to pass this to the render system? The obvious problem is that if simply given the root node of the structure, the render system would require an intrinsic knowledge of the structure in order to traverse the structure. My solution to this is to clip all objects outside the frustum in the scene manager and then create a list of the objects which are left and pass this simple list to the render system, be it an array, a vector, a linked list, etc. (This would be a structure required by the render system as a means to know which objects should be rendered). The list would of course attempt to minimise OpenGL state changes by grouping objects that require the same rendering operations to be performed on them. I have been thinking a lot about this and started searching various terms on here and followed any additional information/links but I have not really found a definitive answer. The case may be that there is no definitive answer but I would appreciate some advice and tips. My question is, is this a reasonable solution to the problem? Are there any improvements that I could make? Are there any caveats I should know about? Side question: Am I right in assuming that octrees, bsp trees, etc are all forms of BVH?

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• How to make the jump from consumer support to enterprise support?

  - by Zac Cramer

  I am currently a high level consumer break/fix technician responsible for about 300-400 repairs a month. I am good at my job, but bored, and I want to move into the enterprise side of my company, dealing with Server 2008 R2 and exchange and switches and routers that cost more than I make in a month. How do I make this transition? Whats the best thing to learn first? Is there a standard trajectory for making this leap from consumer to business? I am full time employed, so going back to school is not a great option, but I have no life, so spending my nights and weekends reading and practicing is totally within my realm. I am basically overwhelmed by the number of things to learn, and looking for any advice you may have on the best way to proceed. PS - I apologize if this is a not quite the right forum for this, I know its not a technical question exactly, but I also know the sorts of people I want to answer this question are reading this website.

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• What hash should be used to ensure file integrity?

  - by Corey Ogburn

  It's no secret that large files offered up for download often are coupled with their MD5 or SHA-1 hash so that after you download you can verify the file's integrity. Are these still the best algorithms to use for this? Obviously these are very popular hashes that potential downloaders would have easy access to. Ignoring that factor, what hashes have the best properties for being used for this? For example, bcrypt would be horrible for this. It's designed to be slow. That would suck to use on your 7.4 GB dual layer OS ISO you just downloaded when a 12 letter password might take up to a second with the right parameters.

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• relationship between the model and the renderer

  - by acrilige

  I tried to build a simple graphics engine, and faced with this problems: i have a list of models that i need to draw, and object (renderer) that implements IRenderer interface with method DrawObject(Object* obj). Implementation of renderer depends on using graphics library (opengl/directx). 1st question: model should not know nothing about renderer implementation, but in this case where can i hold (cache) information that depends on renderer implementation? For example, if model have this definition: class Model { public: Model(); Vertex* GetVertices() const; private: Vertex* m_vertices; }; what is the best way to cache, for example, vertex buffer of this model for dx11? Hold it in renderer object? 2nd question: what is the best way for model to say renderer HOW it must be rendered (for example with texture, bump mapping, or may be just in one color). I thought it can be done with flags, like this: model-SetRenderOptions(RENDER_TEXTURE | RENDER_BUMPMAPPING | RENDER_LIGHTING); and in Renderer::DrawModel method check for each flag. But looks like it will become uncomfortable with the options count growth...

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• What is a good way to share internal helpers?

  - by toplel32

  All my projects share the same base library that I have build up over quite some time. It contains utilities and static helper classes to assist them where .NET doesn't exactly offer what I want. Originally all the helpers were written mainly to serve an internal purpose and it has to stay that way, but sometimes they prove very useful to other assemblies. Now making them public in a reliable way is more complicated than most would think, for example all methods that assume nullable types must now contain argument checking while not charging internal utilities with the price of doing so. The price might be negligible, but it is far from right. While refactoring, I have revised this case multiple times and I've come up with the following solutions so far: Have an internal and public class for each helper The internal class contains the actual code while the public class serves as an access point which does argument checking. Cons: The internal class requires a prefix to avoid ambiguity (the best presentation should be reserved for public types) It isn't possible to discriminate methods that don't need argument checking   Have one class that contains both internal and public members (as conventionally implemented in .NET framework). At first, this might sound like the best possible solution, but it has the same first unpleasant con as solution 1. Cons: Internal methods require a prefix to avoid ambiguity   Have an internal class which is implemented by the public class that overrides any members that require argument checking. Cons: Is non-static, atleast one instantiation is required. This doesn't really fit into the helper class idea, since it generally consists of independent fragments of code, it should not require instantiation. Non-static methods are also slower by a negligible degree, which doesn't really justify this option either. There is one general and unavoidable consequence, alot of maintenance is necessary because every internal member will require a public counterpart. A note on solution 1: The first consequence can be avoided by putting both classes in different namespaces, for example you can have the real helper in the root namespace and the public helper in a namespace called "Helpers".

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• Visual Studio 2010 Service Pack 1 Released

  - by krislankford

  The VS 2010 SP 1 release was simultaneous to the release of TFS 2010 SP1 and includes support for the Project Server Integration Feature Pack and updates to .NET Framework 4.0. The complete Visual Studio SP1 list including Test and Lab Manager: http://support.microsoft.com/kb/983509 The release addresses some of the most requested features from customers of Visual Studio 2010 like better help support IntelliTrace support for 64bit and SharePoint Silverlight 4 Tools in the box unit testing support on .NET 3.5 a new performance wizard for Silverlight Another major addition is the announcement of Unlimited Load Testing for Visual Studio 2010 Ultimate with MSDN Subscribers! The benefits of Visual Studio 2010 Load Test Feature Pack and useful links: Improved Overall Software Quality through Early Lifecycle Performance Testing: Lets you stress test your application early and throughout its development lifecycle with realistically modeled simulated load. By integrating performance validations early into your applications, you can ensure that your solution copes with real-world demands and behaves in a predictable manner, effectively increasing overall software quality. Higher Productivity and Reduced TCO with the Ability to Scale without Incremental Costs: Development teams no longer have to purchase Visual Studio Load Test Virtual User Pack 2010. Download the Visual Studio 2010 Load Test Feature Pack Deployment Guide Get started with stress and performance testing with Visual Studio 2010 Ultimate: Quality Solutions Best Practice: Enabling Performance and Stress Testing throughout the Application Lifecycle Hands-On-Lab: Introduction to Load Testing with ASP.NET Profile in Visual Studio 2010 How-Do-I videos: Use ASP.NET Profiler in Load Tests Use Network Emulation in Load Tests VHD/VPC walkthrough: Getting Started with Load and Performance Testing Best Practice guidance: Visual Studio Performance Testing Quick Reference Guide

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• ASP.NET MVC 3 (C#) Software Architecture

  - by ryanzec

  I am starting on a relatively large and ambitious ASP.NET MVC 3 project and just thinking about the best way to organize my code. The project is basically going to be a general management system that will be capable of supporting any type management system whether it be a blogging system, cms, reservation system, wikis, forums, project management system, etc…, each of them being just a separate 'module'. You can read more about it on my blog posted here : http://www.ryanzec.com/index.php/blog/details/8 (forgive me, the style of the site kinda sucks). For those who don't want to read the long blog post the basic idea is that the core system itself is nothing more than a users system with an admin interface to manage the users system. Then you just add on module as you need them and the module I will be creating is a simple blog post to test it out before I move on to the big module which is a project management system. Now I am just trying to think of the best way to structure this so that it is easy for users to add in there own modules but easy for me to update to core system without worrying about the user modifying the core code. I think the ideal way would be to have a number of core projects that user is specifically told not to modify otherwise the system may become unstable and future updates would not work. When the user wants to add in there own modules, they would just add in a new project (or multiple projects). The thing is I am not sure that it is even possible to use multiple projects all with their own controllers, razor view template, css, javascript, etc... in one web application. Ideally each module would have some of it own razor view templates, css, javascript, image files and also need access to some of the core razor view templates, css, javascript, image files which would is in a separate project. It is possible to have 1 web application run off of controllers, razor view templates, css, javascript, image files that are store in multiple projects? Is there a better was to structure this to allow the user to easily add in module with having to modify the core code?

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• Moving 2d camera in the y direction

  - by Alex

  I'm developing a simple game for the iphone and am struggling to work out the best way for the camera to follow the main character. The following picture hightlights the three main components: There are 3 components to this: Circle - the main character Green line - terrain Black background The terrain is simply made from an array of points (approx 20 points per screen width). The terrain is moved in the x direction relative to the black background in order to keep the circle in its position shown. The distance to move the terrain is simply: movex = circle.position.x - terrain.position.x with a constant to fix the circle at some distance from the left of the screen. I am struggling to determine the best way to position the terrain in the y plane keep the focus in the character. I want to move the terrain in the y direction smoothly and not fix it to the position of the circle, so the circle can move in the y plane. If I take the same approach as the x positioning, the character is fixed at a point on the screen and the terrain moves. I could sample some terrain points either side of the character and produce an average, but in my implementation this was not smooth. I thought another approach might be to create a camera 'line' that is a smooth version of the terrain line and make the camerea follow this, but I'm not sure if this is the optimum solution. Any advice is much appreciated!

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• How do I create a free server-side database to be accessed via Windows forms and/or browser?

  - by NoCatharsis

  I have no formal education in databasing or programming, but I've learned enough SQL, C++, and C# to at least get started setting up a small database on my company's server. Using MS SQL Server 2008 R2, I have created the database and set up columns with proper data types. However, there seems to be a lot of tweaks and details that are way over my head. Since I would like these data to be accessible to the other 7 or 8 people in my office (preferably via web browser), I'm wondering whether this is the best setup for my situation. The other option I've read about is a LAMPP server, which I assume is the competing free option to Microsoft's Express packages. I know nothing of LAMP servers except from the articles I've read on how to set them up (and I believe I even saw a detailed tutorial somewhere). To summarize, my question is this: Which of these (or any other) server setups would best suit my purposes, keeping in mind that I'm a true novice (but willing to learn), and would like to keep it free until I get more experience?

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• How to store prices that have effective dates?

  - by lal00

  I have a list of products. Each of them is offered by N providers. Each providers quotes us a price for a specific date. That price is effective until that provider decides to set a new price. In that case, the provider will give the new price with a new date. The MySQL table header currently looks like: provider_id, product_id, price, date_price_effective Every other day, we compile a list of products/prices that are effective for the current day. For each product, the list contains a sorted list of the providers that have that particular product. In that way, we can order certain products from whoever happens to offer the best price. To get the effective prices, I have a SQL statement that returns all rows that have date_price_effective >= NOW(). That result set is processed with a ruby script that does the sorting and filtering necessary to obtain a file that looks like this: product_id_1,provider_1,provider_3,provider8,provider_10... product_id_2,provider_3,provider_2,provider1,provider_10... This works fine for our purposes, but I still have an itch that a SQL table is probably not the best way to store this kind of information. I have that feeling that this kind of problema has been solved previously in other more creative ways. Is there a better way to store this information other than in SQL? or, if using SQL, is there a better approach than the one I'm using?

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• invitation: EMEA Hardware: Quarterly Partner Sales Update Roadshow

  - by mseika

  Dear Partner We are pleased to invite you to attend the first Oracle EMEA Hardware Quarterly Partner Sales Update Roadshow running in 10 different cities across EMEA. The 3 hour sales session will run in the afternoon in various locations. You can directly register under the "Register Now" button. Learn to Articulate the Oracle Hardware Business value proposition to your customers. Explain Oracle Hardware positioning versus the competition. Understand Oracle Hardware as best platform to run the complete Oracle-on-Oracle stack from Application to Disk Locations & Timings Date Country Location Timings 2nd July 2013   France  Paris 13.00 - 16.15 PM 2nd July 2013  Saudi Arabia  Riyadh 13.00 - 16.15 PM 4th July 2013  United Arab Emirates  Dubai 13.00 - 16.15 PM 8th July 2013  South Africa  Johannesburg 13.00 - 16.15 PM 9th July 2013  Germany  Frankfurt 14.00 - 17.15 PM 10th July 2013  Germany  Münich 14.00 - 17.15 PM 11th July 2013  Switzerland  Zürich 14.00 - 17.15 PM 15th July 2013  United Kingdom  Reading 13.00 - 16.15 PM 17th July 2013  Spain  Madrid 14.00 - 17.15 PM 18th July 2013  Italy  Milan 13.00 - 16.15 PM Price: FREE Find your location and book your seat here! We hope you will take maximum advantage of these great learning and networking opportunities and look forward to welcoming you to your nearest event! Best regards, Giuseppe FacchettiPartner Business Development Manager,Servers, Oracle EMEA Sasan MoaveniStorage Partner Sales Manager,Oracle EMEA

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• invitation: EMEA Hardware: Quarterly Partner Sales Update Roadshow

  - by mseika

  Dear Partner We are pleased to invite you to attend the first Oracle EMEA Hardware Quarterly Partner Sales Update Roadshow running in 10 different cities across EMEA. The 3 hour sales session will run in the afternoon in various locations. You can directly register under the "Register Now" button. Learn to Articulate the Oracle Hardware Business value proposition to your customers. Explain Oracle Hardware positioning versus the competition. Understand Oracle Hardware as best platform to run the complete Oracle-on-Oracle stack from Application to Disk Locations & Timings Date Country Location Timings 2nd July 2013   France  Paris 13.00 - 16.15 PM 2nd July 2013  Saudi Arabia  Riyadh 13.00 - 16.15 PM 4th July 2013  United Arab Emirates  Dubai 13.00 - 16.15 PM 8th July 2013  South Africa  Johannesburg 13.00 - 16.15 PM 9th July 2013  Germany  Frankfurt 14.00 - 17.15 PM 10th July 2013  Germany  Münich 14.00 - 17.15 PM 11th July 2013  Switzerland  Zürich 14.00 - 17.15 PM 15th July 2013  United Kingdom  Reading 13.00 - 16.15 PM 17th July 2013  Spain  Madrid 14.00 - 17.15 PM 18th July 2013  Italy  Milan 13.00 - 16.15 PM Price: FREE Find your location and book your seat here! We hope you will take maximum advantage of these great learning and networking opportunities and look forward to welcoming you to your nearest event! Best regards, Giuseppe FacchettiPartner Business Development Manager,Servers, Oracle EMEA Sasan MoaveniStorage Partner Sales Manager,Oracle EMEA

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• Being rocked...

  - by ZacHarlan

  After almost four and half years, I finally escaped from the world of telemarketing.     I'm now at a place that writes really good code, values testing, does routine code reviews, collaborates with each other so continuously and effectively somebody should make a documentary about it!   Today alone, I had two really smart and well respected developers go line by line through my code and show me how to make it better.  Seriously, people pay really good money for something like this and they don't get near the quality of feedback as I got!     +1 for me finally getting to a point in my career where i get to work with some of the best of the best in the software world!   I've been rocked by the fact that places like this actually exist.     I've been Rocked by the sheer size, complexity and simplicity of our website.     Most importantly I've been ROCKED by the fact that this many smart people check their egos at the door, gel together and look for ways to make software better than how they found it.  This is how to grow a business with tech... hire great people and watch them go!   Seriously, bravo.

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• Setting up and moving a distribution group to a public folder in Exchange 2003

  - by Sevdarkseed

  I'm looking for some advice with something that seems simple but I haven't done before. Currently we use a distribution group called Orders that has an email address that is that forwarded to four people in the company, the same goes for another one, Quotes. The problem is, of course, no one knows what was answered, and all the email gets worked in to the individual user's emails, so I'm thinking that a public folder, only accessible by one department would be the answer. I'm not sure what the best way to set this up would be or how to move/convert the current distribution list over to a public folder. This is a very critical email address in the company, so I'm trying to be sure that there is zero down time at all for it. What would be the best way to go about creating a public folder and converting/forwarding/moving/(whatever) over the current email address to that folder?

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• Spreading incoming batched data into a real-time stream

  - by pr1001

  I would like to display some events in 'real-time'. However, I must fetch the data from another source. I can request the last X minutes, though the source is updated approximately every 5 minutes. This means that there will be a delay between the most recent data retrieved and the point in time that I make the request. Second, because I will be receiving a batch of data, I don't want to just fire out all the events down a socket once my fetcher has retrieved it: I would like to spread out the events so that they are both accurately spaced amongst each other and in sync with their original occurrences (e.g. an event is always displayed 6 minutes after it actually happened). My thought is to fetch the data every 5 minutes from the source, knowing that I won't get the very latest data. The original data would be then queued to be sent down the socket 7.5 minutes from its original timestamp – that is, at least ~2.5 minutes from when its batch was fetched and at most 7.5 minutes since then. My question is this: is this the best way to approach the problem? Does this problem have any standard approaches or associated literature related to implementation best-practices and edge cases? I am a bit worried that the frequency of my fetches and the frequency in which the source is updated will get out of sync, leading to points where no data will be retrieved from the source. However, since my socket delay is greater than my fetch frequency, the subsequent fetch should retrieve newer data before the socket queue is empty. Is that correct? Am I missing something? Thanks!

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• PHP-based indexing and search implementation

  - by Chris

  Is there such thing? I designed a while back a rudimentary form based app for my users. We receive from our suppliers hardware manufacturing data in XML files: file name is made of eleven fields separated by tildes, with each field having its own meaning. R&D guys wanted to be able to search each field of the file names so I used regex() with decent results. Problem is that we have now in the upwards of 2.5 million files. And my app can't hack it anymore. I looked at Apache Lucene & Solr. Though it seemed like the best solution to my problem, the fields in the filenames are not peers to the file content. Big no-no with Solr. What is the best way to implement a PHP app with indexing and search capability with such large number of files? Do I have to buy Zend and use Zend_Search? Is it the only way? Thanks for your input.

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