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  • Learning Programming, Suggestions for a roadmap

    - by RisingSun
    Hi, Some background first- I am new to programming and have discovered it rather late in life; Like many hobbyists, my introduction to the subject has been through php/jquery (yes, i know the popular mood around here... they-are-not-real-programminng-languages ;-) ). I like to believe that I am reasonably competent at what I do in my other life and this developing addiction to coding has taken a very heavy toll on my professional prospects. This is the question: What programming languages next? (No plans to ditch php in the immediate future, that will involve rewriting much of my code) Any absolutely essential books I must read? Is it necessary to join a college/university course? Do I need to ditch my other profession to continue serious learning? My goals are: Develop a solid understanding of the science and art of programming. Continue to work on my own web application (Hands on learning suits me best) I am something of a generalist interested in everything from UI to database performance

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  • APEX Patchset 4.2.1 erschienen

    - by Carsten Czarski
    Seit Freitag, dem 14.12. steht das APEX Patchset 4.2.1 zur Verfügung. Neben zahlreichen Bugfixes sind auch einige, kleinere Änderungen enthalten: Die JQuery Mobile Bibliothek wurde auf Version 1.2.0 aktualisiert Die AnyChart-Engine wurde auf Version 6.0.11 gehoben. Dadurch stehen "Circular Gauge" Charts auch als HTML5 Diagramme bereit Diagramme in Anwendungen für mobile Endgeräte können sich nun dynamisch der Bildschirmgröße anpassen Details zum Patchset finden sich, wie immer in den Release Notes. Wie bislang unterscheidet sich der Installationsvorgang je nach verwendeter APEX-Version. Wenn noch kein APEX oder eine ältere Version als 4.2 installiert ist, kann die Vollinstallation für APEX 4.2.1 direkt aus dem OTN heruntergeladen und normal installiert werden. Wenn APEX 4.2.0 installiert ist, muss Patch Nr. 14732511 aus MyOracle Support heruntergeladen und eingespielt werden.

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  • How do you unit test your javascript.

    - by Erin
    I spend a lot of time working in javascript of late. I have not found a way that seems to work well for testing javascript. This in the past hasn't been a problem for me since most of the websites I worked on had very little javascript in them. I now have a new website that makes extensive use of jQuery I would like to build unit tests for most of the system. My problems are this. Most of the functions make changes to the DOM in some way. Most of the functions request data from the web server as well and require a session on the service to get results back. I would like to run the test from either a command line or a test running harness rather then in a browser. Any help or articles I should be reading would be helpful.

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  • How would I go about setting a CSS gradient background in JavaScript?

    - by Dan
    The CSS gradient is described here, but I have no idea how to select for these properties in JavaScript. I would rather not use jQuery for this if at all possible. EDIT: Just doing the following doesn't seem to work... document.getElementById("selected-tab").style.background = "#860432"; document.getElementById("selected-tab").style.background = "-moz-linear-gradient(#b8042f, #860432)"; document.getElementById("selected-tab").style.background = "-o-linear-gradient(#b8042f, #860432)"; document.getElementById("selected-tab").style.background = "-webkit-gradient(linear, 0% 0%, 0% 100%, from(#b8042f), to(#860432))"; document.getElementById("selected-tab").style.background = "-webkit-linear-gradient(#b8042f, #860432)";

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  • Possible problems in a team of programmers [on hold]

    - by John
    I am a "one man team" ASP.NET C#, SQL, HTML, JQuery programmer that wants to split workload with two other guys. Since I never actually thought of possible issue in a team of programmer, there are actually quite a few that came to my mind. delegating tasks (who works on what which is also very much related to security). I found Team Foundation Service could be helpful with this problem and started reading about it. Are there any alternatives? security (do now want for original code to be reused outside the project) How to prevent programmers from having access to all parts of code, and how to prevent them from using that code outside of project? Is trust or contract the only way?

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  • MVC .Net, WebMatrix talk presentations and webinars

    - by subodhnpushpak
    I presented sessions on MVC .Net and webmatrix. I covered stuff like what’s new in MVC .net and the architecture goodness of MVC pattern. I also demonstrated how MVC 3 / MVC 4 harness HTML 5 / mobile along with Jquery and Modernizr.  PHP coding using MVC and Webmatrix and other advanced stuff like hosting PHP on windows or porting MYSQL Db to MSSQL is also is also part of the demo in the sessions. The slide decks are available at below link and all the demo is recorded and also shared at below link.   WebMatrix View more presentations from Subodh Pushpak.   WebMatrix2 View more presentations from Subodh Pushpak.   The recordings / Demo can be accessed at and If you have any suggestions / ideas / comments; please do post.

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  • Website Stopped Showing From Google Search Results Sunddenly

    - by Aman Virk
    I have a design and development blog http://www.thetutlage.com (1.5 years old), which was doing really well in Google search as I was getting over 70% of my traffic from Google. Now suddenly from last two days it reduced the amount of traffic from 70% to 20% and also when I am trying to search for the exact posts that I can created even after appending my website name to it does not show any results for that. Sample Search Text: JQuery Game Programming Creating A Ping Pong Game Part 1 I have post with exact same title and it does not show it on Google search anywhere. I am totally shocked, I write my own unique content and follow Google guide lines like bible. Also there is no message under my webmasters account stating any problem or error.

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  • How do you unit test your javascript

    - by Erin
    I spend a lot of time working in javascript of late. I have not found a way that seems to work well for testing javascript. This in the past hasn't been a problem for me since most of the websites I worked on had very little javascript in them. I now have a new website that makes extensive use of jQuery I would like to build unit tests for most of the system. My problems are this. Most of the functions make changes to the DOM in some way. Most of the functions request data from the web server as well and require a session on the service to get results back. I would like to run the test from either a command line or a test running harness rather then in a browser. Any help or articles I should be reading would be helpful.

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  • DevExpress ASP.NET MVC Extensions Are Coming Soon

    I have excellent news for ASP.NET MVC developers and DevExpress fans. We are about to release native ASP.NET MVC Extensions in the DXperience v2010.1 release. These native MVC extensions use .NET Framework 3.5 plus jQuery and produce no ViewState! They also include some great functionality and features, so lets dive in and see... Product: DevExpress MVC Extensions Release time estimated around April 2010 with DXperience 2010.1. Includes 5 major extensions: GridView MVCxGridView Menu...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • migrating from struts2, looking for a new framework

    - by adhg
    We are supposed to start a relatively big project that will require lots of computation and analysis. Presentation (UI) for the end user is very crucial (graphs, tabels...) So far we've been using struts2. It's ok+. It has some drawbacks (specially if you work with tiles and all that XML) but if you get the lingo - you're ok. One option on the table is to continue using struts2 with jquery and all the other stuff that we've been doing for so long. Alternatively, I think we have an opportunity to learn something new and maybe a bit better then struts2. My question is this: Anyone has migrated from struts2 to something new and can share the experience. Or had some great experience witha particular java framework. Many thanks for any pointers.

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  • Online iPad 1&2 emulators give different results compared to the real thing

    - by Systembolaget
    I'm designing a centered website (jQuery Isotope). Thre sandbox is here. I have used some online iPad 1&2 emulators to test how the site is viewed on these devices. Then, I managed to get hold of the real thing. Result: on real iPads, the site is centered and the layout adjusts automatically as expected. In online iPad emulators, the site is not quite centered and additional Isotope elements are squeezed in. Of course, I trust the real thing more than online emulators, but why is this happening? To me, it feels like website testing with online emulators is not so reliable after all? If this question is wrong here, please move it or tell me where it should go. SO is about programming, this question isn't. Thanks!

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  • Dadaism and Agility

    - by alexhildyard
    We all have our little bugbears, and something that has given me particular pause over the years is the place of Agility in the software development life cycle. While I have seen it used successfully on both small and Enterprise-level projects, I have also seen many instances in which long-standing technical debt has also originated under its watch. Ironically the problem in such cases seems to me not that the practitioners in question have failed to follow due process (Test, Develop, Refactor -- a common "what" of Agile), but basically that they have missed the point (the "why" of Agile). It's probably a sign of my age that I'm much more interested in the "why" than the "what", since I feel that the latter falls out naturally from the former, but that this is not a reciprocal relationship.Consider Dadaism, precursor to the Surrealist movement in the early part of the twentieth century. Anyone could stand up and proclaim he or she was Dada; anyone could write cut-ups, or pull words out a hat, or produce gibberish on duelling typewriters under the inspiration of Dada. And all that took place at such performances was a manifestation of Dada, and all the artefacts that resulted were also Dada. Hence one commentator's engimatic observation that 'when one speaks of Dada, then one speaks of Dada. But when one does not speak of Dada, one still speaks of Dada.'What is Dada? Literally, Dada is what you say it is. But that's also missing the point. Dada is about erecting a framework within which utterances like this are valid; Dada is about preparing a stage for itself. Dadaism exemplifies the purity of a process-driven ideology -- in fact an ideology that is almost pure process, with nothing extraneous in the way of formal method, and while perhaps Agile delivery should not embrace the liberties of Dadaism too literally, some of the similarities nevertheless are salutary.Agile -- like Dada -- is an attitude; it is about *being* agile; it is not really about doing a specific set of things that are somehow *part* of being Agile. It is an abstract base rather than an implementation, a characteristic rather than a factor. It is the pragmatic response to the need for change in the face of partial information, ephemeral requirements and a healthy dose of systematic uncertainty. In practice this will usually mean repeatedly making the smallest useful changes to a system, recognising that systems evolve, and that all change carries risk. It will usually mean that instead of investing effort in future-proofing a system against a known technology roadmap, one instead invests one's energies in the daily repetition and incremental development of processes best designed to accommodate change quickly. But though it may mean these things in practice, it isn't actually *about* either of these things; it's about the mindset, the attitude that conceives of such responses as sensible solutions given the larger and ultimately unclassifiable thing that constitutes the development lifecycle of a specific project.

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  • On the art of self-promotion

    - by Tony Davis
    I attended Brent Ozar's Building the Fastest SQL Servers session at Tech Ed last week, and found myself engulfed in a 'perfect storm' of excellent technical and presentational skills coupled with an astute awareness of the value of promoting one's work. I spend a lot of time at such events talking to developers and DBAs about the value of blogging and writing articles, and my impression is that some could benefit from a touch less modesty and a little more self-promotion. I sense a reticence in many would-be writers. Is what I have to say important enough? Haven't far more qualified and established commentators, MVPs and so on, already said it? While it's a good idea to pick reasonably fresh and interesting topics, it's more important not to let such fears lead to writer's block. In the eyes of any future employer, your published writing is an extension of your resume. They will not care that a certain MVP knows how to solve problem x, but they will be very interested to see that you have tackled that same problem, and solved it in your own way, and described the process in your own voice. In your current job, your writing is one of the ways you can express to your peers, and to the organization as a whole, the value of what you contribute. Many Developers and DBAs seem to rely on the idea that their work will speak for itself, and that their skill shines out from it. Unfortunately, this isn't always true. Many Development DBAs, for example, will be painfully aware of the massive effort involved in tuning and adding resilience to rapidly developed applications. However, others in the organization who are unaware of what's involved in getting an application that is 'done' ready for production may dismiss such efforts as fussiness or conservatism. At the dark end of the development cycle, chickens come home to roost, but their droppings tend to land on those trying to clear up the mess. My advice is this: next time you fix a bug or improve the resilience or performance of a database or application, make sure that you use team meetings, informal discussions and so on to ensure that people understand what the problem was and what you had to do to fix it. Use your blog to describe, generally, the process you adopted, the resources you used and the insights that came from your work. Encourage your colleagues to do the same. By spreading the art of self-promotion to everyone involved in an IT project, we get a better idea of the extent of the work and the value of the contribution of all the team members. As always, we'd love to hear what you think. This very week, Simple-talk launches its new blogging platform. If any of this has moved you to 'throw your hat into the ring', drop us a mail at [email protected]. Cheers, Tony.

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  • C++ and SDL resource management for 2D game

    - by KuruptedMagi
    My first question is about stateManagers. I do not use the singleton pattern (read many random posts with various reasons not to use it), I have gameStateManager which runs the pointer cCurrentGameState-render(), etc. I want to make a transitioning game, this engine should ideally cover both a platformer and a bird's eye RPG (with some recoding, I just mean the base engine), both of which will load different levels and events, such as world map, dungeon, shops, etc. So I then thought, rather then having to store all this data within all the states, I would break the engine into gameStates, and playStates... when gameState reaches gameStatePlay(), gameStatePlay simply runs the usual handleInput, logic, and render for the playStates, just as the low level gameStateManager does. This lets me store all the player data within the base playstate class without storing useless data in the gameStates. Now I have added a seperate mapEditor, which uses editorStates from gameStateEditor. Is this too much usage of the gameState concept? It seems to work pretty well for me, so I was wondering if I am too far off a common implementation of this. My second question is on image resources. I have my sprite class with nothing but static members, mainly loadImage, applySurface, and my screen pointer. I also have a map pairing imageName enums with actual SDL_Surface pointers, and one pairing clipNumber enums with a wrapper class for a vector of clips, so that each reference in the map can have different amounts of clips with different sizes. I thought it would be better to store all these images, and screen within one static body, since 20 different goblins all use the same sprite sheet, and all need to print to the same screen, and of course, this way I do not need to pass my screen reference to every little entity. The imageMap seems to work very well, I can even add the ability to search through the map at creation of entity type to see if a particular image at creation, creating if it doesnt exist, and destroying the image if the last entity that needs it was just destroyed. The vectored clip map however, seems to take too long to initialize, so if i run past the state that initializes them to fast, the game crashes <. Plus, the clip map call is half of this line =P SPRITE::applySurface( cEditorMap.cTiles[x][y].iX, cEditorMap.cTiles[x][y].iY, SPRITE::mImages[ IMAGE_TILEMAP ], SPRITE::screen, SPRITE::mImageClips[IMAGE_TILEMAP]->clips.at( cEditorMap.cTiles[x][y].iTileType ) ); Again, do I have the right idea? I like the imageMap, but am I better off with each entity storing its own clips? My last question is about collision detection. I only grasp the basics, will look at per-pixel and circular soon, but how can I determine which side the collision comes from with just the basic square collision detection, I tried breaking each entity into 4 collision zones, but that just gave me problems with walking through walls and the like <. Also, is per-pixel color collision a good way to decide what collision just occured, or is checking multiple colors for multiple entities too taxing each cycle?

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  • Learn a language bottom-up or top-down?

    - by Hanno Fietz
    When starting the first project in a new language, you have basically two approaches to learning. Either you do a quick Google search, pull together the most popular frameworks and libraries and work your way from their tutorials towards what you want to achieve (top-down). Or you start with the language basics and the standard library and by and by replace your own simple components with more sophisticated third-party components once you know what you're searching for (bottom-up). Now I'm about to embark on my first serious Javascript project. There's probably as much to know about the language as there is about jQuery, ExtJS and whathaveyou, and I'm trying to decide what to focus on.

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  • Blogger Template: How is inline style tag getting attached to img? [migrated]

    - by john Smith
    Examining a blogger template's img tag (data:post.thumbnailUrl) i've approached a mystery. An inline style tag controlling the width, margin and heigh perimeters are getting added to my img element. They are auto adjusting the images ratio to fit a smaller size. But I can't figure-out where this style tag script lives and how it's happening in my template. My template has no special javascript or jquery scripts. The full size images in the single posts page don't have this style tag. Is this a css or xml feature? element.style { margin-top: 0px; width: 301.0033444816054px; height: 200px; margin-left: -0.5016722408026908px; }

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  • How to advance in my JavaScript skills? [closed]

    - by IlyaD
    I am using javascript for about two years now, and I feel that I can do really basic stuff. I can make some basic algorithms and mostly use jQuery for interactive elements on webpages, and as I need to do more advanced things I get the feeling that my knowledge is lacking. In most cases I find a code, it takes me quite some time to understand it, but I don't understand why it is written as it is. I have no background in computer science, so I'm not sure weather I should go to the basics, or get some advanced javascript book/course. How can I make that jump from using JS for scripting to become a real programmer?

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  • Suggestions for Summer Intern Application Assignments

    - by orangepips
    As part of our application process we want prospective college interns to complete an assignment on their own - either programming or analytical - to give us something tangible to evaluate such as code or a flowchart. I have two ideas for these assignments, one programming and one analytical, I am interested in gathering feedback about these. Programming Assignment Generate an a month's calendar for a given date. The first row should indicate the days of the week (e.g. Sunday - Saturday). Each subsequent row should contain a week's days. The date supplied should be highlighted (e.g. bolded). I am thinking we'll probably proscribe the output format even more strictly - probably down to what the HTML source should look like including CSS classes. Thinking is this forces answerers to actually do some work if they merely copy a solution from the internet. Analytical Assignment Diagram or describe in prose a system for managing a set of traffic lights for traffic at a four way intersection. Each direction (i.e. North, South, East and West) has two lanes (i.e. right and left). The left lane is turn only and has green arrow light to indicate right of way. The system is able to detect if lanes have cars in them and change the lights accordingly. I would expect a flow chart or some prose describing a finite state machine that deals with each contingency. This would hopefully provide some indication of the applicant's ability to reason through a logic problem of sorts and articulate an approach for solving. Areas Seeking Feedback Is it unreasonable to ask this of applicants? If not, is it better to request before or after a phone screen? Are these questions too hard or easy for a collegiate audience? Any suggestions for alternate questions? Do these seem like good tools for analyzing people who would part of a software development life cycle? Programming language suggestions - I'm thinking Java, Python and/or C# (we're actually a ColdFusion shop).

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  • Welcome to my blog!

    - by Thomas Mason
    I am a 21 year old Web Developer, with over five years experience in the PHP field. Covering Javascript - jQuery & Ajax, mySQL, JSON and CSS. Out of the five years experience, three have been as a freelancer, the rest commercial work. (I have to say freelance is more comfortable whereas commercial really does get you to do things out of the box.) This blog will cover problems I come across and the solutions I came up with. Bringing ideas into reality - even if it's never been done before! Overall I hope to bring new ideas and my experience to developers old and new.

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  • Do you contribute to open-source software?

    - by pablo
    Recently John Resig (creator of the jQuery library) wrote on his twitter that "When it comes to hiring, I'll take a Github commit log over a resume any day.". As much as I respect that (motivating developers to give back to the community), it also puzzles me, as not all of us have the opportunity to do so, for a number of reasons (family, employer agreements, etc). How would you make a case for the non-contributor developer? Do you think that developers that do not contribute to open-source software are doomed from certain kinds of organizations?

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  • How do I apply a computer science degree to web development?

    - by T. Webster
    I'm a web programmer, but I haven't found many opportunities to take advantage of a formal education in computer science. Maybe I'm not looking in the right places, but it seems to me like most of the web jobs I come across are CRUD, web forms, and data grids. For these jobs a formal CS background doesn't seem necessary, and you could do fine with O'Reilly cookbooks in jQuery, CSS 3, PHP, SQL, or ASP.NET MVC. What kinds of web developer jobs exist that really let you apply your computer science background? Do I need to branch out into other areas of programming to take full advantage of my degree?

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  • How should I structure my turn based engine to allow flexibility for players/AI and observation?

    - by Reefpirate
    I've just started making a Turn Based Strategy engine in GameMaker's GML language... And I was cruising along nicely until it came time to handle the turn cycle, and determining who is controlling what player, and also how to handle the camera and what is displayed on screen. Here's an outline of the main switch happening in my main game loop at the moment: switch (GameState) { case BEGIN_TURN: // Start of turn operations/routines break; case MID_TURN: switch (PControlledBy[Turn]) { case HUMAN: switch (MidTurnState) { case MT_SELECT: // No units selected, 'idle' UI state break; case MT_MOVE: // Unit selected and attempting to move break; case MT_ATTACK: break; } break; case COMPUTER: // AI ROUTINES GO HERE break; case OBSERVER: // OBSERVER ROUTINES GO HERE break; } break; case END_TURN: // End of turn routines/operations, and move Turn to next player break; } Now, I can see a couple of problems with this set-up already... But I don't have any idea how to go about making it 'right'. Turn is a global variable that stores which player's turn it is, and the BEGIN_TURN and END_TURN states make perfect sense to me... But the MID_TURN state is baffling me because of the things I want to happen here: If there are players controlled by humans, I want the AI to do it's thing on its turn here, but I want to be able to have the camera follow the AI as it makes moves in the human player's vision. If there are no human controlled player's, I'd like to be able to watch two or more AI's battle it out on the map with god-like 'observer' vision. So basically I'm wondering if there are any resources for how to structure a Turn Based Strategy engine? I've found lots of writing about pathfinding and AI, and those are all great... But when it comes to handling the turn structure and the game states I am having trouble finding any resources at all. How should the states be divided to allow flexibility between the players and the controllers (HUMAN, COMPUTER, OBSERVER)? Also, maybe if I'm on the right track I just need some reassurance before I lay down another few hundred lines of code...

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  • Which is easier to learn, Zend Framework, CakePHP or CodeIgniter?

    - by Kwame Boame
    I am new to programming but I know HTML, CSS and Jquery. I am a web designer but want to expand my skill to application development with frameworks. Specifically, PHP frameworks. I want to know which of the frameworks mentioned in the question is difficult to master. Also, my friend wants me to learn Ruby on Rails/ Python instead of PHP. What's your best advice for a newbie programmer who is looking to build online software/apps in the near future; say, after 3 months/6 months or a year of study and practice?

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  • robots.txt, how effective is it and how long does it take?

    - by Stefan
    We recently updated the site to a single page site using jQuery to slide between "pages". So we now have only index.php. When you search the company on engines such as Google, you get the site and a listing of its sub pages which now lead to outdated pages. Our plan doesn't allow us to edit the .htaccess and the old pages are .html docs so I cannot use PHP redirects either. So if I put in place a robots.txt telling the engines to not crawl beyond index.php, how effective will this be in preventing/removing crawled sub pages. And rough guess, how long before the search engines would update?

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  • Question about server usage, big community platform

    - by Json
    I’m working on a community platform writen in PHP, MySQL. I have some questions about the server usage maybe someone can help me out. The community is based on JQuery with many ajax requests to update content. It makes 5 - 10 AJAX(Json, GET, POST) requests every 5 seconds, the requests fetch user data like user notifications and messages by doing mySQL queries. I wonder how a server will handle this when there are for more than 5000 users online. Then it will be 50.000 requests every 5 seconds, what kind of server you need to handle this? Or maybe even more, when there are 15.000 users online, 150.000 requests every 5 seconds. My webserver have the following specs. Xeon Quad 2048MB 5000GB traffic Will it be good enough, and for how many users? Anyone can help me out or know where to find such information, like make a calculation?

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