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• Relationship between C#, .NET, ASP, ASP.NET etc

  - by Samuel Walker

  I'm really unclear on the difference between C#, C#.NET and the same for ASP and other '.NET' languages. From what I understand, .NET is a library/framework of... things. I think they're essentially access to Windows data such as form elements etc, but that doesn't seem to apply for ASP.NET. In addition, I see people calling themselves '.NET' developers. Does this mean they're fluent in C#, ASP and other languages? Finally, I never see C# without .NET attached. Is C# tied that closely to .NET as to be unusable without it? In summary: what exactly does .NET provide? How does it relate to C# and ASP etc? What does 'a .NET developer' mean? And finally, why do you never see C# without .NET? [As an aside, I realise these are multiple questions, but I think they are very inter-related (or at least that is the impression that browsing Programmers / SO etc has given me)].

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• Relationship between C#, .NET, ASP, ASP.NET etc

  - by Samuel Walker

  I'm really unclear on the difference between C#, C#.NET and the same for ASP and other '.NET' languages. From what I understand, .NET is a library/framework of... things. I think they're essentially access to Windows data such as form elements etc, but that doesn't seem to apply for ASP.NET. In addition, I see people calling themselves '.NET' developers. Does this mean they're fluent in C#, ASP and other languages? Finally, I never see C# without .NET attached. Is C# tied that closely to .NET as to be unusable without it? In summary: what exactly does .NET provide? How does it relate to C# and ASP etc? What does 'a .NET developer' mean? And finally, why do you never see C# without .NET? [As an aside, I realise these are multiple questions, but I think they are very inter-related (or at least that is the impression that browsing Programmers / SO etc has given me)].

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• What is the best way to evaluate new programmers?

  - by Rafael

  What is the best way to evaluate the best candidates to get a new job (talking merely in terms of programming skills)? In my company we have had a lot of bad experiences with people who have good grades but do not have real programming skills. Their skills are merely like code monkeys, without the ability to analyze the problems and find solutions. More things that I have to note: The education system in my country sucks--really sucks. The people that are good in this kind of job are good because they have talent for it or really try to learn on their own. The university / graduate /post-grad degree doesn't mean necessarily that you know exactly how to do the things. Certifications also mean nothing here because the people in charge of the certification course also don't have skills (or are in low paying jobs). We need really to get the good candidates that are flexible and don't have mechanical thinking (because this type of people by experience have a low performance). We are in a government institution and the people that are candidates don't necessarily come from outside, but we have the possibility to accept or not any candidates until we find the correct one. I hope I'm not sounding too aggressive in my question; and BTW I'm a programmer myself. edit: I figured out that asked something really complex here. I will un-toggle "the correct answer" only to let the discussion going fluent, without any bias.

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• Is this information about me as a programmer concise and good enough?

  - by Nick Rosencrantz

  I not only want you to review my resume but please tell me what you think Google means when they answered me: "We don't look at personal letters and we like your resume and we can recommend you internally but we need measurable experience. What is meant with "measurable" here? Do they mean like O(1) compared to O(n), selling an entire company, grades or what? This is what I sent: Curriculum vitae Nick Rosencrantz Competence: System development, web development Technical competence: Java, Javascript, HTML, XML, CSS, AJAX, PHP, SQL, Python Employments: 2012- Mobile Innovation AB System Developer IT consultant (Java programmer) 2011-2012 Bnano International Ltd System Developer Python programming in Google App Engine 2008-2009 Sweden Island AB System Developer Programming C++ and Java EE components 2003-2007 Studies Stockholm School of Economics During studies worked as network technician at Effnet AB 2000-2002 Jadestone AB System Developer System development in Java/J2EE. In 2001: KTH, Assistant. Teaching application server programming in Java Enterprise + weblogic + Informix. 1999-2000 Studies KTH 1996-1998 Spray.se System development, Researcher 1995-1995 Finance broker Backoffice work with financial instruments 1993-1994 Computer & Audio-Technical Systems AB Programming, sommer job Education/Courses: Stockholm School of Economics, Master of Science diploma, KTH, Computer Science undergraduate studies Languages Swedish, English, also some German and French Born 1973, Swedish citizen I also have a project-based CS which is several pages long but the above is about what I was aiming for in the beginning when I was looking for a job, now I have employment as an IT consultant in central Stockholm and I want to make my resume concise and also know what Google meant with their answer (It was a Swedish Google employee that via linkedin recruited from my Stockholm School of Economics groups since that is a small elite economics school where I took my M.Sc. and KTH is one of the largest universities in northern Europe so I sent her a link with my CV and she said she could promote me internally if I added "measurable experience" and I've been thinking for weeks what that may mean?

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• Everythings changes, except that it doesn&rsquo;t

  - by Dennis Vroegop

  You may have noticed this. Microsoft launched a new product this week. Well, launched is a strong word, they announced it. They call it.. The Surface! What is it? Well, it’s a cool looking family of tablets designed for Windows 8. And I have to say: they look stunning and I can’t wait to have one. There’s just one thing.. The name..Where have I heard that before? Why, indeed! Yes, it is also the name of a new paradigm in computing: Surface Computing. You may have read something about that, here on this blog for instance. Well, in order to prevent confusion they have decided to rename Surface to Pixelsense. You know, the technology that drives the ‘camera’ inside the Samsung SUR40 for Microsoft Surface…. So now, when we talk about Surface, we mean the new tablet. When we talk about Pixelsense we mean that big table… So there you have it… Welcome PixelSense! For more info see http://www.surface.com for the tablet and http://www.pixelsense.com for Pixelsense.

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• Mobile web development rudiments

  - by Konrad Garus

  How does one get started with web development for mobile devices (including phones)? I know some old good HTML & JS, but I'm wondering what the modern way is. To make it concrete, I need to implement a client for an enterprise app. Think of a login-protected dashboard for managers. Given that I only have basic knowledge and have never implemented such applications, what do I need to take into account when choosing platform and technology? Shall I go for Android / iPhone, or HTML & JS, or HTML5? What are the general pros and cons that I need to consider? What resources (preferably online) do you recommend for learning the rudiments? I mean especially HTML & JS: What does the site need to be like to work great on smartphones (and not only on desktops)? I mean possible UI glitches, limited support for some HTML/JS features, page size, and whatever other important details are there.

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• Dependencies lib32asound2 [duplicate]

  - by The Mini John

  This question already has an answer here: 'teamviewer depends on (…)' while trying to install TeamViewer 4 answers I was trying to install Teamviewer, but i was getting a dependencies error. I tried to install them but with no luck.. I think Mod's are not reading the questions trough when they mark as duplicate I'm getting this Error: Unpacking teamviewer (from teamviewer_linux_x64.deb) ... dpkg: dependency problems prevent configuration of teamviewer: teamviewer depends on lib32asound2; however: Package lib32asound2 is not installed. teamviewer depends on lib32z1; however: Package lib32z1 is not installed. teamviewer depends on ia32-libs; however: Package ia32-libs is not installed. dpkg: error processing teamviewer (--install): dependency problems - leaving unconfigured Errors were encountered while processing: teamviewer I tried sudo apt-get -f install but getting Package ia32-libs is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source However the following packages replace it: lib32z1 lib32ncurses5 lib32bz2-1.0 Package lib32asound2 is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source E: Package 'lib32asound2' has no installation candidate E: Package 'ia32-libs' has no installation candidate i cant even get to the sudo dpkg -i teamviewer_linux_x64.deb If i force installation sudo dpkg --force-depends -i teamviewer_linux_x64.deb Although it's "Setting up Temviewer" it gives me this I'm fairly new to ubuntu, can anyone help me out ? I'm on Ubuntu 13.10

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• DDD Model Design and Repository Persistence Performance Considerations

  - by agarhy

  So I have been reading about DDD for some time and trying to figure out the best approach on several issues. I tend to agree that I should design my model in a persistent agnostic manner. And that repositories should load and persist my models in valid states. But are these approaches realistic practically? I mean its normal for a model to hold a reference to a collection of another type. Persisting that model should mean persist the entire collection. Fine. But do I really need to load the entire collection every time I load the model? Probably not. So I can have specialized repositories. Some that load maybe a subset of the object graph via DTOs and others that load the entire object graph. But when do I use which? If I have DTOs, what's stopping client code from directly calling them and completely bypassing the model? I can have mappers and factories to create my models from DTOs maybe? But depending on the design of my models that might not always work. Or it might not allow my models to be created in a valid state. What's the correct approach here?

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• What are the advantages of Maven when it comes to single man, educational projects

  - by Leron

  I've spend a few hours playing around with Maven + reading some stuff on the apache official site and also a few random googled articles. By this I mean that I really tried to find the answers myself - both by reading and by doing things on my own. Also maybe worth to mention that I installed the m2e plugin so most of the time I've tried things out from Eclipse and not using the command line too much. However aside from the generated project that for example prevent me from using the default package I didn't see that much of a difference with the standard way I've created my projects before try Maven. In fact I've almost decided to skip Maven for now and move on to the other technology I wanted to learn more in-depth - Hibernate, but when I start with opening the official page the first thing I've read was the recommendation to use Hibernate with Maven. That get me confused and made me taking a step back and trying once more to find what I'm obviously missing right now. As it's said in the maven.apache.. site, the true strength of Maven is shown when you work on large projects with other people, but I lack the option to see how Maven is really used in this scenario, still i think that there are maybe advantages even when it comes to working with small projects alone, but I really have difficulties to point them out. So what do you think are the advantages of Maven when it's used for small projects writing from a single person. What are the things that I should be aware of and try to exploit (I mean features offered by Maven) that can come in handy in this situations?

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• Need help in determing what, if any, tools can be used to create a free Flash game

  - by ReaperOscuro

  Yes I proudly -and sadly- declare that I am a complete nincompoop when it comes to Flash, and I have been fishing around the big wide web for information. The reason for this is that I have been contracted to create a game(s) for a website -the usual flash-based games caveat. Please I do not mean things like by those gaming generator websites, I mean small yet professional games- but the caveat, as always, is that impossible dream: it needs to be done all for free. The budget...well imagine it as not there. Annoyingly is that I am a game designer yes, but with a ridiculously tight deadline I haven't got much time to re-learn (ah the heady days of programming at uni) everything by the end of March, so I'd like to ask some people who know their stuff rather than keep looking at a gazillion different things. This is my understanding: with the flash sdk you can create a game, albeit you need to be pretty programming savvy. FlashDevelop helps there -yet I am not entirely sure how. Yet even FD says to use Flash for the animation/graphics. Yes its undeniably powerful but as I said there is the unattainable demand of no money. The million dollar question: what, if any, tools can I use to create a free flash game?

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• A lot has happened since last post!!!!!!!!!

  - by Ratman21

  And I mean a lot! First off had two interviews (one was selling insurance) and other installing cable. I have more hope for the cable one. Getting more emails from my job search engines (having problems with going through them and applying for those jobs, I know I can do). It seems the more I apply to, the more job emails pop up in my in box. But at the same time I am fighting feelings of worthlessness (18 months and no job). It is putting a strain on my marriage (We had had blow out over a broken drinking glass since I last posted).     But, at the same time, I am fighting mad about (a figure of speech, really) not having a job. Look just because I am over 55 and have gray hair. It does not mean, my brain is dead or I can not longer trouble shoot a router or circuit or LAN issue. Or that I can do “IT” work at all. And I could prove this if; some one would give me at job. Come on try me for 90 days at min. wage.   I know you will end up keeping me (hope fully at normal pay) around. Is any one hearing me…come on take up the challenge!

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• How can I compare between web development technologies?

  - by Steve

  I would like experts to explain for me how can I compare between web development tools or technologies in order to be able to choose the right one. I'm tired from searching always in the regular way: X Technology vs Y Technology. I'm tired from peoples' biased opinions and usually I don't find a fair comparison. I have decided to put my question here about how can I compare them so you may identify to me the main standards for comparisons so I can compare them by myself and becoming able to choose the technology that is appropriate for the project I will develop. Note: in web development technologies I mean server side languages (e.g. PHP). One important requirement for me that can be defined as major one is cost efficiency and I mean that I don't care about the cost in the near future or the current cost, but what is more important for me is the cost in the future. If, for example, the site becomes one of the most 100 visited sites.   So, how can I compare the cost of different technologies for a future status of a site (such as being very famous site) so I can scale my option easily without missing a good technology like what happened with some sites when they chose not the most effective tool.

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• Apache2 + Php + Pthreads HowTos

  - by Drug

  04 LTS 64 bit. What I would really love to do is sudo apt-get install libapache2-mod-php5 but compile PHP with --enable-maintainer-zts so I could later install pthreads with pecl install pthreads. Sadly I understand that it is not possible. I know that the easiest way is to recompile PHP together with apache support and zts. However I really like the way the standard Ubuntu PHP package is configured and I am used to the path`s for CLI php.ini config, Apache php.ini config and other paths for modules and files that this Ubuntu package defines. So i just want to change the package source a little bit and install it. # Get the stuff necessary to build the package sudo apt-get build-dep php5-common # Get the package source sudo apt-get source php5-common At this point I am getting sources not for the php5-common package but the whole php5 package. If I would sudo make && make install at this point, would it mean that I am installing a lot of unnecessary stuff? # Add configuration options ./configure --enable-maintainer-zts Does this mean that I am appending a configuration option? Or am I generating a whole new config? Alternative at this point Is there a way of getting the config options that this package defines, so that I can grab a php source from php.net and compile it with $ ./configure --prefix=package_prefix \ // Option 1 from package --enable-embed \ // Option 2 from package --with-regex=php \ // Option 3 from package Continuing the main idea ... Solution 1 # Compile (Not compiling) sudo make && make install Will I be building PHP with EVERYTHING at this point? If I compile like this, I will not be able to remove the mess I made using sudo apt-get purge php5? Solution 2 # ReCompile the package dpkg-buildpackage -rfakeroot -uc -b This does not compile also. Please correct my steps, so I can install everything correctly.

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• cannot login to ubuntu 14.04

  - by Wallace Cheng

  I upgraded my Hp g6 from ubuntu 13.10 to 14.04 yesterday. Now I cannot log into the system using ubuntu/unity But I can still login using i3 windows manager. I checked and found the ubuntu-desktop is broken. I tried to reinstall it, it complained about the dependency issue and broken package. some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help resolve the situation: The following packages have unmet dependencies: ubuntu-desktop : Depends: ubuntu-session but it is not going to be installed Recommends: empathy but it is not going to be installed E: Unable to correct problems, you have held broken packages. when I tried to install ubuntu-session, Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help resolve the situation: The following packages have unmet dependencies: ubuntu-session : Depends: gnome-session-bin (< 3.10) but 3.10.1-0ubuntu1~saucy1 is to be installed Depends: gnome-session-common (= 3.9.90-0ubuntu12) but 3.10.1-0ubuntu1~saucy1 is to be installed E: Unable to correct problems, you have held broken packages. I tried sudo apt-get install -f but it does not work Any help would be highly appreciated. Thanks.

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• Should my program "be lenient" in what it accepts and "discard faulty input silently"?

  - by romkyns

  I was under the impression that by now everyone agrees this maxim was a mistake. But I recently saw this answer which has a "be lenient" comment upvoted 137 times (as of today). In my opinion, the leniency in what browsers accept was the direct cause of the utter mess that HTML and some other web standards were a few years ago, and have only recently begun to properly crystallize out of that mess. The way I see it, being lenient in what you accept will lead to this. The second part of the maxim is "discard faulty input silently, without returning an error message unless this is required by the specification", and this feels borderline offensive. Any programmer who has banged their head on the wall when something fails silently will know what I mean. So, am I completely wrong about this? Should my program be lenient in what it accepts and swallow errors silently? Or am I mis-interpreting what this is supposed to mean? Taken to the extreme, if Excel followed this maxim and I gave it an exe file to open, it would just show a blank spreadsheet without even mentioning that anything went wrong. Is this really a good principle to follow?

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• Would you refactor this and if so, would you charge your client?

  - by Julius

  I am working on a freelance job at home. The client wants me to write some new functionality for his CMS, but it is taking me a lot of time to figure out what the code is doing, because it is written in a very unreadable style. Below is just an example of what I mean. The previous programmer made extensive use of anonymous functions, of eval(), he uses deeply nested ternary operators, he didn't indent code, didn't use comments, and he uses funny constructions like misusing the behaviour of logical operators || and && for creating if/else conditions (the second condition of && only gets tested if the first one is true, opening the possibility to use && as an if/else construction). All in all it's insane code and it's costing me a lot of time to find out how the current code works. return ($this->main->context != "ajax" || in_array($this->type, $this->definition->ajax)) ? eval('return method_exists($this,"Show'.ucfirst($this->type).'") ? $this->Show'.ucfirst($this->type).'('.(count($args) ? join(",",array_map(create_function('$a','return (is_numeric($a) || preg_match("/^array/",$a)) ? $a : "\"".$a."\"";'),$args)) : "").') : null;') : ''; Would you refactor this code and how would you handle this sort of thing with your client, I mean financially?

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• How to get multiple open-source projects to use a standard way of doing something.

  - by Marco

  Problem In the last couple weeks, I've used 3 different "repository" tools (listed in alphabetical order): gradle ivy maven I'm calling them "repository" tools because I've also used sbt -- which fortunately uses ivy to manage it's cache or local repository. Each of these tools will create it's own repository. The defaults are: ~/.m2/repository for maven ~/.gradle/cache ~/.ivy2/cache Why can't they all use the same cache? Goal I'd like to change the world so that all three build tools could use the same cache. I'm looking for advice about issues I'm likely to run into and smart ways to get around them. By "use the same cache", I do not mean "retrieve from another build tool's cache". I mean "retrieve from and store in another build tool's cache". While I could go ahead and submit issues to the three projects, I know from experience (as a developer on an open source project), that if you want something done, you're best off getting it done yourself. Also, it seems like I need to get all 3 communities on board to some degree. What is the recommended approach for getting this kind of thing done? How do I approach the different communities? Do I work on patches for the 3 different projects, or would it be better off to create my own "interface" project that deals with these issues and have the 3 tools interface with that? Is this a standards question that I need to address on that front? Lastly, if I'm missing something and this is possible (in an globally configurable fashion), then please let me know.

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• How to restore curropted installation?

  - by nightweels

  I have a laptop with dead battery that when there is no current connected to it turns critical so fast and in the energy management in ubuntu, when the battery is critical, there are 2 options: shutdown and hibernate witch is in grey (unclickable), so I have no choice but to chose immediate shutdown, there is no standby even if it is an option in the screen behavior. An immediate shutdown (and I mean by immediate the one that we use when we ended using the computer) happened while I was installing a program called quickly, so after the power was restored, I tried to reinstall the program then I get this translated message: An untreatable error occurred: It seems there is a software error in aptdaemon, the program that lets you install and remove software and any other task related to package management. details: Traceback (most recent call last): File "/usr/lib/python2.7/dist-packages/aptdaemon/worker.py", line 968, in simulate trans.unauthenticated = self._simulate_helper(trans) File "/usr/lib/python2.7/dist-packages/aptdaemon/worker.py", line 1092, in _simulate_helper return depends, self._cache.required_download, \ File "/usr/lib/python2.7/dist-packages/apt/cache.py", line 235, in required_download pm.get_archives(fetcher, self._list, self._records) SystemError: E:I wasn't able to locate a file for the libpng12-dev package. This might mean you need to manually fix this package.

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• What makes a person contribute to opensource? [duplicate]

  - by Jibin

  This question already has an answer here: Why develop free, open source programs? [closed] 14 answers I know this is controversial, but.. There are many great projects like Apache Webserver or Hadoop provided by the OpenSource Community. I often feel that the people that actually benefit (financially), from these projects are developers like me, sitting in India, working for MNCs, who has never contributed anything to any opensource project so far, but earn handsomely due to my basic googling skills & the community provided documentation. Is it fair ? I mean no other industry in the world face such dilemma.Those who work get paid. I mean I almost am starting to feel guilty of taking such advantage of some thing that I contribute nothing to. I had to do projects every semester in college (we could choose projects) & I used to enjoy coding then. I want to contribute. But contributing to opensource is not a task [unlike college or office work]. And life is so busy .. Are all these opensource contributors really jobless ?[just kidding..] Could someone please share some personal experiences on how you guys started contributing or any advice on why I should contribute or what attitude in life makes you keep aside time or is it that you just crazly love writing code or is it that you just love to see your name in the contributors list or do you have a local coding group you hang out with ? Do you feel I am destined to do this ? This is my part of contributing back to the world ? Whats that basic mentality that make you guys want to contribute, while I just want to finish my work and go home. What makes you guys tick ?

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• geomipmapping using displacement mapping (and glVertexAttribDivisor)

  - by Will

  I wake up with a clear vision, but sadly my laptop card doesn't do displacement mapping nor glVertexAttribDivisor so I can't test it out; I'm left sharing here: With geomipmapping, the grid at any factor is transposable - if you pass in an offset - say as a uniform - you can reuse the same vertex and index array again and again. If you also pass in the offset into the heightmap as a uniform, the vertex shader can do displacement mapping. If the displacement map is mipmapped, you get the advantages of trilinear filtering for distant maps. And, if the scenery is closer, rather than exposing that the you have a world made out of quads, you can use your transposable grid vertex array and indices to do vertex-shader interpolation (fancy splines) to do super-smooth infinite zoom? So I have some questions: does it work? In theory, in practice? does anyone do it? Does this technique have a name? Papers, demos, anything I can look at? does glVertexAttribDivisor mean that you can have a single glMultiDrawElementsEXT or similar approach to draw all your terrain tiles in one call rather than setting up the uniforms and emitting each tile? Would this offer any noticeable gains? does a heightmap that is GL_LUMINANCE take just one byte per pixel(=vertex)? (On mainstream cards, obviously. Does storage vary in practice?) Does going to the effort of reusing the same vertices and indices mean that you can basically fill the GPU RAM with heightmap and not a lot else, giving you either bigger landscapes or more detailed landscapes/meshes for the same bang? is mipmapping the displacement map going to work? On future cards? Is it going to introduce unsurmountable inaccuracies if it is enabled?

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• Efficient coding in Visual Studio (or another IDE), with touch typing

  - by cheeesus

  Moving the cursor to another position in code is one of the most frequent actions when coding. I don't write my programs from the beginning to the end, like a letter. However, moving the cursor requires me to move my right hand to the key arrows or to the mouse, which feels like an interruption to my writing rhythm, since I'm using touch typing. I want my hands to rest on the keyboard. It's difficult to explain what I mean, but I think every coder using touch typing knows what I mean. I tried many things, like defining some shortcuts as surrogate arrow keys (Shift+Alt+J, K, L, I), or buying a keyboard with a Trackpoint, Trackpad, or Trackball on it, but I have not yet found a satisfying solution to the problem. What is the best solution you know of, regardless of which IDE you use? Edit: Thank you for your answers. I am using a lot of shortkeys, but I think using a Vim plugin in Visual Studio would interfere too much with the shortkeys I am used to. Also, I have a keyboard with a built-in mouse, but I'm still looking for a better solution.

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• Fan always on and overheating problems on HP G62

  - by Dave

  I have a HP G62 with i5 processor, 4G Ram and ATI HD 5470. Started using Ubuntu 4 months ago, first was 11.10 and after 12.04. Everything worked perfectly until some weeks ago when my cpu fan became "crazy" and I mean by this always on, noise and overheating problems, for sure if I put a glass with water in some minutes will boil (and I mean it). There can be a bug in the last kernel or any other Ubuntu's official update? And by the way CPU fan is cleaned like a new born baby; Used jupiter and all those stuff (lm-sensor, psensor...) - same problem; Don't ask me to install ATI drivers because will work like sh#t (interface laggy as HD 5470 isn't supported by Ubuntu) and I can't even open ATI Catalyst (error when I try to open it), more than this I always used open source drivers and as I said, worked perfectly (3d, effects). Right now I'm back to Windows and everything is working perfectly but my main problem is that I get used with Ubuntu and kinda weird to use windows again. I want back my nice and almost perfect Ubuntu. Thanks, Dave

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• How to mange big amount users at server side?

  - by Rami

  I built a social android application in which users can see other users around them by gps location. at the beginning thing went well as i had low number of users, But now that I have increasing number of users (about 1500 +100 every day) I revealed a major problem in my design. In my Google App Engine servlet I have static HashMap that holding all the users profiles objects, currenty 1500 and this number will increase as more users register. Why I'm doing it Every user that requesting for the users around him compares his gps with other users and check if they are in his 10km radius, this happens every 5 min on average. That is why I can't get the users from db every time because GAE read/write operation quota will tare me apart. The problem with this desgin is As the number of users increased the Hashmap turns to null every 4-6 hours, I thing that this time is getting shorten but I'm not sure. I'm fixing this by reloading the users from the db every time I detect that it became null, But this causes DOS to my users for 30 sec, So I'm looking for better solution. I'm guessing that it happens because the size of the hashmap, Am I right? I have been advised to use spatial database, but that mean that I can't work with GAE any more and that mean that I need to build my big server all over again and lose my existing DB. Is there something I can do with the existing tools? Thanks.

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• NoSQL

  - by NoReasoning

  Last night, (Tuesday, June 28), at the KC .NET User group meeting, George Westwater gave a terrific presentation on NoSQL. The best way to define it (the best way is to see George explain it, and he says he will record his presentation and make it available through his blog – link above)  is databases  that does not use relational technology. And his point, and this is true – I have been around awhile – is that non-relational databases have been used for over 50 years in the business. He points out that Wall Street firms have been using non-relational technology ever since they started using computers. IBM still fully supports IMS, now in version 11 (12 is in beta), because these firms are still using this product and will continue to do so for a long time. Of course, like a lot of computer business technology, there are a lot of new NoSQL products available these days, simply as a reaction to the problems of scaling relational databases for internet use. As a result, it almost looks as though NoSQL is something new. And there are a lot, I mean a LOT, I mean a L-O-T , of new products out there for this technology. The best resource to cover all of these products is http://nosql-database.org/, which has a huge listing of what is available. My interest in the subject is primarily due to my interest in Windows Azure and the fact that Windows Azure storage is all non-relational, even the table storage. It is very fascinating and most of all, far cheaper than using SQL Azure for storage in the “cloud."

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• Who is a CMS really for?

  - by Eirc man

  I have started lately discovering Content Management Systems, and I was wondering, who is really CMS for? What I mean by that: is it only for companies, small businesses or individuals, that pays a contractor to make a website that it's users can just upload content through a easy interface. Or is it used also by programmers, to build their own websites, projects? Would a Facebook, Tweeter, StackExhange ever started by using a CMS, a very powerful one for example. Would you as a programmer build your own "fancy" website on top of a CMS, for example like Typo3, or you would build it from scratch? P.S To be more clear is a summary: What I mean to begin with is, would I as a developer choose a CMS to develop a website that can be scaled with a big base of users, be stuck if I choose to start with a CMS system. What if I build a website using CMS, and the website explodes in popularity, and then I wanted to add much more functionality that I have planed, is it possible that the CMS will limit the growth, because it might have not been build for that kind of scale?

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