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  • Site's performance slows over time until Apache is restarted

    - by udbhav
    I'm running a Django app w/ Nginx and Apache. All our static media is stored on S3, and basically it takes a while for the app to check if thumbnails have been created every time a page is loaded. To alleviate this problem, I'm caching the output of the templates w/ memcached. Over the course of an hour or two, the site's speed goes down significantly, until I restart apache, and then all is good for a little while. I have very little sysadmin experience, and was hoping somebody could at least point me in the right direction.

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  • How to estimate what kind of server resources you will require at launch?

    - by Anonymous -
    How can I go about/what is the best way of estimating what kind of server resources I will require at the launch of a new project. Let's say for instance I'd gathered 10k users email addresses that opted-in to be informed when we launch. I didn't really want to go for a cloud solution at the moment. Should I just get a reasonably-specced dedicated server and go from there, or should I be looking at services like Amazon EC2? Or should I start out with EC2 for the fully-flexible resources, then once things stabilize I'll be able to sort a fixed hosting deal that is adequate elsewhere? Sub-question: What's a good way of estimating what load a particular application will place on the server per user?

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  • Ask the Readers: How Do You Find Your Next Book?

    - by Jason Fitzpatrick
    It’s never been easier to find book reviews, recommendations, and comparisons; tools which are more necessary than ever thanks to the increasing number of new titles on the market. This week we want to hear all about your techniques for picking your next book. Whether you consult the New York Times best seller list, pore over Amazon book reviews, use a book suggestion engine, or just buy whatever the local book store has on the end-cap display that month, we want to hear about your system for finding new books. Sound off in the comments with your technique (bonus points for including links to any services or sites you use) and then check back on Friday for the What You Said roundup to see how your fellow readers fill their book bags. Secure Yourself by Using Two-Step Verification on These 16 Web Services How to Fix a Stuck Pixel on an LCD Monitor How to Factory Reset Your Android Phone or Tablet When It Won’t Boot

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  • Moving from an IT department to a proper technology company

    - by user2434
    I have been working with Java/web applications in an IT department of a retail company. As much as work goes, there is nothing much to say. Fixing couple of if/else loops, writing some simple business logic etc., is all what I have been doing. Having said that, I feel I have a good technical knowledge, and I am willing to move to companies like Microsoft/Google/Amazon etc., [I want to work in these places, because I feel I am a technical guy, and I am working in a place where most people freak out when the words like 'algorithm' are heard] I can of course prepare algorithms/computer science fundamentals etc.,(I hold a 4 year degree in computer science program) but beyond that, will my experience hold against me ? I doubt I'll even get a call from them seeing my work experience. What kind of questions(apart from the algorithm types) can I expect ?

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  • Avez-vous confiance dans la confidentialité du Cloud ? Google fait certifier la confidentialité des Google Docs par des tiers indépendants

    Avez-vous confiance dans la confidentialité du Cloud ? Google fait certifier la confidentialité des Google Docs par des organismes indépendants Google, Amazon ou Salesforce.com se livrent bataille dans le Cloud. Mais ces prestataires ont un point commun : la question de la confidentialité est toujours plus ou moins esquivée. Le constat est certainement moins vrai pour Microsoft qui d'une part propose un Cloud hybride (et donc permet de garder la main en local sur ses données sensibles) et d'autre part qui a admis qu'en cas de demande de la part de la justice américaine, ses data-centers seraient ouverts au FBI.

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  • Free or cheap Media(image) hosting for web application

    - by Asish Bhattarai
    I am building a small social web application. I am developing it with rails. I want some cheap or free image hosting which I can use as my image repository for my website because I can't afford Amazon cloud store or something like that. Can I use flickr, imageshack or service something like that? Do they allow me to store images for my website? Suppose I wanna use pics for blogpost and I will be extracting pics from their api and show on my blog post. Is that possible? Sorry I'm beginner.

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  • Need Advice: What to program?

    - by newbie
    Good day! Our professor asked us to create a Web-based program using JSP and JDBC. The problem is I don't have any idea what to program. We have 5 days to create the program and I am searching websites like hotel reservation system, library catalogue system, Amazon, etc but I think it is too big for 5 days (and I am just a beginner). Can anyone give me an idea what is suitable project for beginners to start with? (Note: Address Books / ATM Transactions are not allowed). Do you have sample website so I have a reference? Thank you.

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  • Cloud proxying service

    - by ChristopherJ
    I have an app that mashes up images from Bing image search, it's hosted on Heroku written in rails. The app is client side in javascript, so the mashup is done on an html5 canvas - this means though that if I fetch the images direct from the Bing server, the canvas gets dirty and I can't save it. As a quick work around, i have set up a route on my rails app that simply proxies the request to Bing and passes the result back through. Obviously this is a very poor performance solution and will eat up my dynos very quickly. Can anyone suggest a more suitable option? At the moment I'm thinking maybe Amazon EC2 with apache mod_rewrite rules would be better performing and more cost effective. Is there a cloud service (or an app I could deploy to a cloud service) that would be more appropriate for proxying requests for me so that my javascript can fetch the images without dirtying the canvas?

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  • Would I benefit changing from PHP to Node.js (in context)

    - by danneth
    The situation: We are about to roll out what is essentially a logging service. As we are rather PHP heavy, the current implementation use it. We will have about 200 computers (most on the same network) that will each send, via HTTP POST, around 5000 requests/day. With each request containing about 300 bytes of data. The receiving end is hosted at Amazon and is a very simple PHP form with some simple validation that puts everything in a database. Now, I've recently been introduced to Node.js and I'm curious as to if it would be a good fit for the backend here. Granted I could easily build something to test this. But since I haven't fully grasped the async-methology I would really like someone with experience to explain it to me.

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  • Is there such a concept as "pseudo implementation" in software development?

    - by MachuPichu
    I'm looking for a label to describe the practice of using human-based computation methods or other means of "faking" an algorithm for the sake of getting a product or demo off the ground quickly without spending the time to develop an technical/scalable/analytical solution? Eg: using Amazon Turk to count the number of empty tables in a restaurant. I'm also looking to learn more about this subject, but not sure what to search for. Human-based computation is only one method, I'm interested in the general idea of pseudo-implementation. Any ideas, recommended reading? Thanks

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  • Powerpoint: remote pointing and slide track device

    - by kkp
    I think that this question may not be suitable for this forum. But I need your help. I am planning to buy a remote pointing (not only just pointing, we will be able to track the slides) device for my powerpoint presentations. I always use Ubuntu and powerpoint with libreoffice impress. I have been looking products on amazon, most of them are either for Windows or MAC. I am not sure whether they will work on Ubuntu. I think that at least some of of you have been using a device for presentations on Ubuntu. It would be great if you share one that will work seamlessly with Ubuntu. Thanks.

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  • Web Hosting Dublin [duplicate]

    - by user1543871
    This question already has an answer here: How to find web hosting that meets my requirements? 4 answers I am currently developing a site using laravel 4. I had intended on using Pagodabox for my hosting needs, however I now realize that they don't have servers outside of the US. So I'm just looking for some advice or recommendations? Can I still use Pagodabox with CloudFlare? Or would I be better of to use a provider with dedicated servers in Dublin? Such as Amazon bean stock. Any help greatly appreciated.

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  • how to use version control

    - by ptamzz
    I'm developing a web site in php in localhost and as modules of it gets completed, I upload it on the cloud so that my friends can alpha test it. As I keep developing, I've lots of files and I lose track of which file I've edited or changed etc. I've heard of something as 'version control' to manage all those but am not sure how it works. So, my question is: Is there an easy way/service/application available to me to track all the edits/changes/new files and manage the files as I develop the website. As Soon as I'm done with a module, I want to upload it on the cloud (I'm using Amazon Cloud Service). If something happens to the new files, I might want to get back to the old file. And maybe, in a click or two, I get to see the files which I've edited or changed since the last one I've uploaded?

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  • How can you deploy with juju multiple times the same application within the same environment? [closed]

    - by Pere Hospital
    Possible Duplicate: How do I deploy multiple stacks in an environment? If trying to deploy two times wordpress i.e. in the same environment you get: 2012-12-19 16:56:54,588 INFO Searching for charm cs:precise/wordpress in charm store 2012-12-19 16:56:55,472 INFO Connecting to environment... 2012-12-19 16:57:01,044 INFO Connected to environment. 2012-12-19 16:57:01,374 INFO Using cached charm version of wordpress 2012-12-19 16:57:01,857 ERROR Service name 'wordpress' is already in use This would apply for a situation where you want to deploy multiple wordpress blogs using the same env (i.e. same amazon account).

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  • Why does my Windows computer immediately turn back on after sleep/hibernate?

    - by nbolton
    After clicking sleep or hibernate in Windows 7, my computer loads for a while and then goes into sleep mode, but not 1 second later it powers back up. The event log has no errors and no warnings appear when it comes back out of sleep/hibernation. Here's my system specifications: Asus P5KPL-VM Windows 7 I believe this is all that's relevant. I've installed the latest chipset drivers, but I'm unable to update my BIOS (but this is another matter; maybe because the motherboard in the V3-P5G31 bundle is different). I've also tried turning off the "Allow this device to wake up my computer" for the network card, keyboard, and mouse -- but this makes no difference. If flashing the BIOS is the only thing that will fix this, then I will create a new question to this effect. Maybe I should change the suspend mode from S3 to S1?

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  • What book do you recommend for the OCAJP certification (1Z0-803) and OCPJP (1Z0-804) [on hold]

    - by Muhammad Gelbana
    I find completely contradicting reviews for the VERY same book on amazon and even some book writers are rewarding people for good reviews so basically most of the reviews are totally fake ! You can even figure it out from the reviewer name, which you'll similar to the writer's name and assume that they could actually be from the same country and the reviewer is just being helpful, to the book writer of course ! I can't make my mind for which book I should buy ! I only need a book or two that covers the Java associate and professional topics very well, not just an overview, I need a material that covers everything from A to Z. Even though I've been developing in Java for around 4.5 years but I must not know a detail or two. Would someone kindly shed some light on a good book based on actual experience with the book ? THANK YOU !

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  • Setting up a reverse proxy [on hold]

    - by mrwooster
    I am looking for the best solution for setting up a very low maintenance reverse proxy for a production website (example.com). The setup is as follows: A blog with will be hosted on heroku, and will reside at example.com/blog A static info page which will be hosted on S3 and will reside at example.com/signup A dynamic content management system, provided and hosted by an external vendor which will respond to requests for any other pages. The two solutions which come to mind are: Use HAProxy Ask the external vendor to reverse proxy requests for /blog and /signup The obvious solution would be to use HAProxy, but, if at all possible, I would like to avoid having to setup and maintain another server (especially such a critical one). I came across a company called Snapt which offers hosted HAProxy solutions, but its more geared towards load-balancing than reverse proxying. Option 2 is a possibility, but gives us very little control over changes and configuration. I see a lot of sites hosting blogs on /blog so this must be fairly common practice, am I missing an obvious solution?

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  • Server Design Enquiry [closed]

    - by Brandon Gelfand
    I am really new to this and am having trouble with how I can store information from a website. I am going to be making a site similar to dropbox for my company and there is gonna be around 40 TB of space that we need to be able to access on the go, for instance pull the file up on the phone or off our laptop using the internet. Obviously using an Amazon S3 server is not the most cost effective way of doing this so how can I make my own server to hold all of the info and communicate to it from a website? Please I need as much help as possible, like a blueprint or something. Thanks and sorry for the noobish question but I can't really find an exact answer to my question.

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  • What’s your worst day? – Database Deployment Edition

    Ever had your database deployment derailed? Or, if not derailed, delayed? We’d like to hear what caused the problem and whether you think it could have been avoided. Our favourite tale of woe will win a $50 Amazon certificate. Can 41,000 DBAs really be wrong? Join 41,000 other DBAs who are following the new series from the DBA Team: the 5 Worst Days in a DBA’s Life. Part 3, As Corrupt As It Gets, is out now – read it here.

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  • ???????????Java SE 7??????! ?Java SE 7 ?????? ?????? ???!

    - by rika.tokumichi
    2006?Java SE6???????5????????????????????Java SE 7???????????????????????????????????????????2011?7?7???Java SE 7 ?????? ?????????????? ???????????????????????Java SE 7????????????????????????????????????????????Java????????????????1??????????????????? ????????????????????????????????? ?????????????Java SE 7????????Java SE8?????????????????????Java??????????????????HotSpot???JRockit??????Java???????????????????????????? ?????????????Java SE 7???????????Project Coin??InvokeDynamic??NIO.2??JSR-166y????????????????????????????????????? ????????????????????????????????????????????????????????????????????????????????? ???????????? Java SE 7 ??????????????????????????????Tips??????????????Java SE7????????????????????????????????????????????????? ??????????????????????Ustream?????????????????????! ???? Java SE 7 ?????? ?????? ??:2011?7?7?14?~ ??:?????????? 13F S3?S4 ?????(??) (????) 14:00 - 14:20????? 14:20 - 15:10Java SE 7?8??? 15:15 - 16:05HotRockit?Java?????????? 16:05 - 16:20?? (????) 16:20 - 17:05NetBeans 7.0?Project Coin??? 17:05 - 17:50InvokeDynamic??? 17:50 - 18:05?? 18:05 - 18:35NIO.2??? 18:35 - 19:05JSR 166y??? 19:05 -??? * ????????????????????????? ??????????????? ????????????

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  • ???????????Java SE 7??????! ?Java SE 7 ?????? ?????? ???!

    - by rika.tokumichi
    2006?Java SE6???????5????????????????????Java SE 7???????????????????????????????????????????2011?7?7???Java SE 7 ?????? ?????????????? ???????????????????????Java SE 7????????????????????????????????????????????Java????????????????1??????????????????? ????????????????????????????????? ?????????????Java SE 7????????Java SE8?????????????????????Java??????????????????HotSpot???JRockit??????Java???????????????????????????? ?????????????Java SE 7???????????Project Coin??InvokeDynamic??NIO.2??JSR-166y????????????????????????????????????? ????????????????????????????????????????????????????????????????????????????????? ???????????? Java SE 7 ??????????????????????????????Tips??????????????Java SE7????????????????????????????????????????????????? ??????????????????????Ustream?????????????????????! ???? Java SE 7 ?????? ?????? ??:2011?7?7?14?~ ??:?????????? 13F S3?S4 ?????(??) (????) 14:00 - 14:20????? 14:20 - 15:10Java SE 7?8??? 15:15 - 16:05HotRockit?Java?????????? 16:05 - 16:20?? (????) 16:20 - 17:05NetBeans 7.0?Project Coin??? 17:05 - 17:50InvokeDynamic??? 17:50 - 18:05?? 18:05 - 18:35NIO.2??? 18:35 - 19:05JSR 166y??? 19:05 -??? * ????????????????????????? ??????????????? ????????????

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  • initializing structs using user-input information

    - by johnny boy
    I am trying to make a program that works with poker (texas holdem) starting hands; each hand has a value from 1 to 169, and i want to be able to input each card and whether they are suited or not, and have those values correspond to a series of structs. Here is the code so far, i cant seem to get it to work (im a beginning programmer). oh and im using visual studio 2005 by the way #include "stdafx.h" #include <iostream> int main() { using namespace std; struct FirstCard { struct SecondCard { int s; //suited int n; //non-suited }; SecondCard s14; SecondCard s13; SecondCard s12; SecondCard s11; SecondCard s10; SecondCard s9; SecondCard s8; SecondCard s7; SecondCard s6; SecondCard s5; SecondCard s4; SecondCard s3; SecondCard s2; }; FirstCard s14; //ace FirstCard s13; //king FirstCard s12; //queen FirstCard s11; //jack FirstCard s10; FirstCard s9; FirstCard s8; FirstCard s7; FirstCard s6; FirstCard s5; FirstCard s4; FirstCard s3; FirstCard s2; s14.s14.n = 169; // these are the values that each combination s13.s13.n = 168; // will evaluate to, would eventually have s12.s12.n = 167; // hand combinations all the way down to 1 s11.s11.n = 166; s14.s13.s = 165; s14.s13.s = 164; s10.s10.n = 163; //10, 10, nonsuited s14.s13.n = 162; s14.s11.s = 161; s13.s12.s = 160;// king, queen, suited s9.s9.n = 159; s14.s10.s = 158; s14.s12.n = 157; s13.s11.s = 156; s8.s8.n = 155; s12.s11.s = 154; s13.s10.s = 153; s14.s9.s = 152; s14.s11.n = 151; cout << "enter first card: " << endl; cin >> somthing?//no idea what to put here, but this would somehow //read out the user input (a number from 2 to 14) //and assign it to the corresponding struct cout << firstcard.secondcard.suited_or_not << endl; //this would change depending //on what the user inputs system("Pause"); }

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  • jquery accordion - keeps hiding parent element?

    - by PopRocks4344
    Well, I fixed my original question by including after the closing tags, but now, those links won't open? So, basically, in the html below, I'm trying so that only the services section slides open, but I want the h3 tags to open those links... <div id="sp-accordion"> <h3><a href="/?page_id=3">Home</a></h3><div></div> <h3><a href="/?page_id=2">About Us</a></h3><div></div> <h3><a href="#"> Services</a></h3> <div> <p><a href="/?page_id=16">S1</a></p> <p><a href="/?page_id=14">S2</a></p> <p><a href="/?page_id=20">S3</a></p> </div> <h3><a href="/?page_id=9">Contact Us</a></h3><div></div> <h3><a href="/?page_id=5">Tips</a></h3><div></div> <h3><a href="/?page_id=108">Jobs</a></h3><div></div> <h3><a href="/?page_id=131">Newsletter</a></h3><div></div> </div> The accordion works, insomuch that when you click on the h3 tag, the container slides open, however, when it slides open, it hides the h3 before it. So, in the html below, when I click on "Services" the div beneath it slides open, but the About Us h3 disappears... This is the html: <div id="sp-accordion"> <h3><a href="/?page_id=3">Home</a></h3> <h3><a href="/?page_id=2">About Us</a></h3> <h3><a href="#"> Services</a></h3> <div> <p><a href="/?page_id=16">S1</a></p> <p><a href="/?page_id=14">S2</a></p> <p><a href="/?page_id=20">S3</a></p> </div> <h3><a href="/?page_id=9">Contact Us</a></h3> <h3><a href="/?page_id=5">Tips</a></h3> <h3><a href="/?page_id=108">Jobs</a></h3> <h3><a href="/?page_id=131">Newsletter</a></h3> </div> I'm using jquery ui, so the jquery is just this: $(document).ready(function() { $("#sp-accordion").accordion({autoHeight:false}); });

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  • Tim Thumb for an External Host / CDN

    - by Wes
    I'm running a stock copy of tim thumb on a clients website. Works great but does not support external hosts for the pictures. My clients uses an amazon CDN / Flickr for all of their websites pictures which doesnt allow me to resize on the fly. Has anyone found a work around for this? http://code.google.com/p/timthumb/

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