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• Webserver: Performance impact when storing session files on /dev/shm

  - by GetFree

  I have a website runing on a typical setup: Linux, Apache, PHP, MySQL. However, what's not typical about it, is that it's getting tons of traffic (400,000+ visits a day) and so, efficiency is becoming more and more important to me. I'm constantly looking for things I could optimize and, right now, my attention is focused on PHP's session files. There's a hell lot of session files constantly being read and created on the /tmp directory. So my question is: Is it a good idea to store the session files in /dev/shm (tmpfs) in order to speed things up a little bit??

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• Multiple SSL domains on the same IP address and same port?

  - by johnlai2004

  I set up an ubuntu 9.10 - apache2 - php5 server. I was under the impression that each valid SSL certificate (no domain wild cards) required it's own unique IP address and port number combination. But the answer to a previous question I posted is at odds with this claim: http://serverfault.com/questions/109766/ssl-site-not-using-the-correct-ip-in-apache-and-ubuntu Using the accepted answer, I was able to get multiple domains, each with it's own valid SSL to work on the same IP address and on port 443. I am very confused as to why the above answer works, especially after hearing from others that each SSL domain website on the same server requires its own IP+port combination. I am suspicious that I did something wrong. Can someone clear up the confusion? Websites currently using different SSL but on the same IP and Port are: https://www.yummyskin.com/ https://staging.bossystem.org/

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• Third-party Information Screen Opening Blank

  - by Jacob

  I'm working with a client who is trying to use our software, which accesses information (sends & receives) from a third-party website. When this client tries to access these pages, a window opens, as expected, but is completely blank and no error message is received. This is the first time I've seen this with many other clients successfully using this product, which leads me to believe that it has something to do with the settings on the computer somewhere, but cannot figure out what might be happening. Windows Server 2003 R2, Standard Edition, Service Pack 2. Firewall is already off. Tried AVG on & temporarily disabled.

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• What if you've been asked to develop a site and the client later introduces Ts&Cs that you'll breach whilst doing your job?

  - by Matt Lacey

  Disclaimer : this is all made up. Honest. And it represents no clients or employers living or dead, blah blah blah, etc. [Allegedly] As part of a website I've built, I've now been provided the Terms and Conditions of site usage to display on the site. These terms--which must be agreed to to access the site--include my (or any visitor to the sites) compliance with a number of clauses. Many of these clauses refer to general computer use and are not tied specifically to use of the site. Some of these clauses refer to things I have had to previously do as a legitimate part of my job and would expect to have to do again. When I've raised similar issues previously my line manager has said just to ignore it but that doesn't seem to be the professional thing to do. So, what do I do? Abiding by the terms would mean that I could no longer work on the project and would cause issues with my employer and the owner of the business the site is being created for. Ignoring them could lead to possible future issues with the business owner and is not something I'm necessarily happy with (the deliberate breaking of a legal contract). Neither option is one I'd choose and could have major consequences. Any thoughts?

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• Is the Zune HD's audio card better or worse than the iPod touch's?

  - by MatthewThepc

  Firstly, if this is the wrong site to ask this question I apologize, but I didn't see one for "music players" on the stack exchange website :) After reading a few people online say that music playing from a Zune HD sounds better to them than that on an iPod touch, I was wondering whether there's any truth to that? From what I can tell, the Zune HD uses a Wolfson Microelectronics WM8352, while the first-generation iPod Touch (which the Zune HD was competing with) used a Wolfson Microelectronics WM8758BG, and newer models use the Cirrus Logic CS4398 and CS42L61. Which ones are better (to make the question less subjective, let's say in terms of quality, range, & accuracy of output)? Admittedly, I have almost no idea how everything compares and works together, but it would seem to me that, just by looking at the version numbers, the iPod has been better since it's launch. Is there anything else that effects sound quality? Thanks!

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• Reaping the Benefits of the Image Packaging System

  - by rickramsey

  source One of the promises made about Oracle Solaris 11 was easier installation. Remember? Do you also remember how involved installing Oracle Solaris Cluster used to be? It was so involved, in fact, that we (when we were Sun Microsystems) wouldn't even let you do it yourself. How times have changed. New - How to Automate The Installation of Oracle Solaris Cluster 4.0 Thanks to the new image packaging architecture in Oracle Solaris 11, you can now automate the installation of Oracle Solaris Cluster 4.0. Why is that such a big deal? As Lucia Lai explains it: "Without the AI, you would have to manually install the cluster components on the cluster nodes, and then run the scinstall tool to add the nodes to the cluster. If, instead, you use the AI, both the Oracle Solaris 11 and the Oracle Solaris Cluster 4.0 packages are installed onto the cluster nodes directly from Image Packaging System (IPS) repositories, and the nodes are booted into a new cluster with minimum user intervention." Lucia goes on to explain how to set up and configure the AI server, how to plan your cluster configuration for the automated installation, how to use the scinstall utility, how to set up the DHCP server, and more. A thorough, well-written article. - Rick Website Newsletter Facebook Twitter

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• What Should I Do? [closed]

  - by Laxmidi

  What is a reasonable goal in terms of traffic for my Flex 3 site: www.brainpinata.com Since I began a couple of months ago, I've gotten roughly 5500 ad views and 280 ad clicks. And the ad revenue is a whopping $4.80. (I don't use Google Adsense). I advertise my site using Google Adwords to try to build traffic. My budget is $10/day. What should I do? a) Push the marketing. Add a blog. Try to get backlinks, contact blogs, start a Facebook page, tweet, etc. b) Google is only indexing the static content in the SWF. The questions/answers are pulled from a mySQL database. So, Google doesn't index 99% of the content. Should I re-do the site in HTML/Javascript and hard-code the questions for each puzzle? (This would be a challenge as I don't know javascript worth squat.) Or should I hard-code the questions in XML and put them in the Flex app? If I put the questions in an XML file it's roughly 500 KB. Other ideas? c) Should I switch ad networks? (I currently get about 100 visitors a day). My ad network pays so little that if I were to make even $500/month, I would need 550,000 ad views/month, which seems impossible. If I go ahead and switch ad networks, I need to find one that allows iFrames as I've got a Flex website. Which ad networks permit their ads to be shown in iFrames? d) Should I cut and run? I put a lot of work into this project and it would really stink to get nothing out of it. I'm looking for some good advice. Looking forward to your suggestions. Thank you. -Laxmidi

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• Which OS should I chose for my VPS?

  - by Camran

  I am about to order a virtual private server now, and have no experience in any Linux OS whatsoever. I am a fast learner however... My VPS provider provides these OS: Ubuntu 8.04 LTS Ubuntu 8.04 LTS 64-bit Ubuntu 9.10 Ubuntu 9.10 64-bit Debian 5.0 Gentoo Gentoo 64-bit Ubuntu 8.04 LTS + Ruby on rails I don't know what these are, however I have heard about Ubuntu alot, and know there is alot of information about it on the Internet. Will it make any difference which one I chose? I plan on running a classifieds website, which uses PHP, MySql, Java (for Solr) and the usual standard stuff (HTML, javascript...). Which should I chose? And what is the next step after chosing one? Thanks

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• Do I need to have a company so that I can buy an SSL certificate that will display green at the address bar?

  - by André Pena

  I have a non-comercial website in which the users store some sensitive information so I feel the need to have a SSL certificate, but it seems that if I don't have a registered company I can't buy a green certificate. I have some related questions: Is it true that if I don't have a company, I can't have a green certificate? If I issue a standard (non-business) certificate that won't go green (from GoDadday, for instance), will it go red? Or will it have a less ugly display.. something more neutral that won't scary the user.

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• Multilingual sites and Google search results, using sub-folders for language

  - by AWinter

  About three months ago we added an English version of our, previously Japanese only, site under the subfolder /en/ we've tried to follow the sometimes incomplete best practices laid out by Google by adding alternate tags to all pages that are currently translated. The top page for instance has the following meta tags for language. <link rel="canonical" href="/"> <link rel="alternate" hreflang="ja" href="/"> <link rel="alternate" hreflang="en" href="/en/"> While the English main page under /en/ has <link rel="canonical" href="/en/"> <link rel="alternate" hreflang="ja" href="/"> <link rel="alternate" hreflang="en" href="/en/"> Alternate languages are setup in the sitemap. (as per Google's recommendations) It seems however that Google absolutely refuses to show the English top page in results when the user is using English at google.com if you search you'll, as of this post, get the Japanese description and a title that Google has apparently invented instead of the title and description in the meta-tags for the /en/ index page. Does anyone have any experience with subfolders actually working to affect search results? What are the best practices for ensuring that the correct language version of my website is displayed through Google and other search engines? And how long will it take before the new language version becomes prominent in search engine results?

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• SOA Specialization update

  - by Jürgen Kress

  SOA Specialization is taking off, more and more customers ask for Specialized Partners, make sure you start your own Specialization. To align the number of required Oracle Service-Oriented Architecture Certified Implementation Specialist we reduced them from 4 to 2 consultants. For details on Specialization please see SOA & Application Grid Specialization Guide  SOA & Application Grid Specialization Checklist Thanks for all the partners who became SOA Specialized in 2010! Accenture & Infosys Technologies Limited & Atos Origin & CedarCrestone, Inc. & FUJITSU & OPITZ CONSULTING GmbH& Zensar Technologies & ECS Team & Zirous Inc  Your company is missing? Make sure you add the SOA Specialization information in your solutions catalog For more information on SOA Specialization and the SOA Partner Community please feel free to register at www.oracle.com/goto/emea/soa (OPN account required) Blog Twitter LinkedIn Mix Forum Wiki Website Technorati Tags: SOA Specialization,SOA,soacommunity,OPN,Oracle,Jürgen Kress,solutions catalog

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• System wide Proxy settings when on a windows network with a password

  - by sav

  I'm using Ubuntu on a windows network. I want to connect to the world wide web. I have followed the steps here which I have found very useful. However when I try to ping a website (eg: ping www.wikipedia.org) I get no reply. I can ping local computers on my network, but I need to go through our proxy to get to the world wide web. I can even browse wikipedia using firefox, I just needed to enter the proxy configuration script location and my username and password. I'm quite sure the reason I'm having this trouble is because I havn't entered a username and password. I'm not sure how to do this on a system wide level. ultimately I would like to be able to use package managers like synaptic but first I need them to be able to connect to the internet. EDIT As sugested I created a /etc/apt/apt.conf file like Acquire::http::Proxy "http://chrisav:[email protected]:8080"; Acquire::https::Proxy "https://chrisav:[email protected]:8080"; Acquire::ftp::Proxy "ftp://chrisav:[email protected]:8080"; Acquire::socks::Proxy "socks://chrisav:[email protected]:8080"; However I still cant ping wikipedia when I try installing stuff I get chris@chris-Ubuntu:~$ sudo apt-get install kate Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package kate

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• WMV file won't play in Windows Media Player

  - by user1053768

  I have a .wmv file I uploaded to my website. When I click the link to the video, the video plays in Windows Media Player without any problems. However, on some systems when the user clicks the link, Windows Media Player gives them the error: Window Media Player cannot play the file. The player might not support the file type or might not support the codec that was used to compress the file All I did was copy the video to the server and store the URL in a database. Why are users getting this error? How can I fix it?

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• Is anyone familiar with this message in Kapersky Internet Security 2010?

  - by tintincutes

  Hi I just started my computer up & opened a website for my checking my mail, when I opened a Kaspersky Internet Security 2010 window popped up. C:\Documents and Settings\username\Local Settings\Application Data\Mozilla\Firefox\Profiles\rse47wp8.default\Cache\C\79\D5CC9d01 Does anyone is familiar with this? I checked the path and this path doesn't exist. I couldn't remember that I have a file of D5CC9d01 once. Can somebody please tell me if this is a virus or not? Thanks

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• How much HDD space would I need to cache the web while respecting robot.txts?

  - by Koning Baard XIV

  I want to experiment with creating a web crawler. I'll start with indexing a few medium sized website like Stack Overflow or Smashing Magazine. If it works, I'd like to start crawling the entire web. I'll respect robot.txts. I save all html, pdf, word, excel, powerpoint, keynote, etc... documents (not exes, dmgs etc, just documents) in a MySQL DB. Next to that, I'll have a second table containing all restults and descriptions, and a table with words and on what page to find those words (aka an index). How much HDD space do you think I need to save all the pages? Is it as low as 1 TB or is it about 10 TB, 20? Maybe 30? 1000? Thanks

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• Facebook Payments & Credits vs. Real-World & Charities

  - by Adam Tannon

  I am having a difficult time understanding Facebook's internal "e-commerce microcosm" and what it allows Facebook App developers to do (and what it restricts them from doing). Two use cases: I'm an e-com retailer selling clothes and coffee mugs (real-world goods) on my website; I want to write a Facebook App that allows Facebook users to buy my real-world goods from inside of Facebook using real money ($ USD) I'm highschool student trying to raise money for my senior class trip and want to build a Facebook App that allows Facebook users to donate to our class using real money ($ USD) Are these two scenarios possible? If not, why (what Facebook policies prohibit me from doing so)? If so, what APIs do I use: Payments or Credits? And how (specifically) would it work? Do Facebook Users have to first buy "credits" (which are mapped to $ USD values under the hood) and pay/donate with credits, or can they whip out their credit card and pay/donate right through my Facebook App? I think that last question really summarizes my confusion: can Facebook users enter their credit card info directly into Facebook Apps, or do you have to go through Payments/Credits APIs as a "middleman"?

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• Will search engines reindex a page that has been set to redirect on to a newer site page?

  - by Luke Duddridge

  We were asked by a client to change a website so that any pages/Urls we were hosting on an older site would now redirect to a newer site hosted somewhere else and a different domain name to boot. We did this by changing each page in the IIS site management, to redirect to a url on their new domain instead of rendering a page locally. According to the redirect tool here: http://www.webconfs.com/redirect-check.php . What we have done is search engine friendly. Problem now is... the client has been on a course learning all about meta tags and so thinks they have a better understanding of the "matrix" (remember there is no spoon). As Google still has the older site appearing in a search, this isnt helping matters. I have tried to explain, we have to wait for Google to reindex. I'm not blowing smoke am I? I'm now starting to wonder... will the older site always appear in a search, even though the pages don't exist? Is there a better way I should be redirecting their site to ensure google will stop keeping an index of pages that no longer exist and would instead replace them with the content in the newer site? a suggestion on the site mentioned above is to use the code: Response.Status="301 Moved Permanently" Response.AddHeader "Location","http://www.new-url.com/" Does using the option in the IIS management tool to redirect the url not do the same?

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• In general, do 3rd-party laptop AC adapters / chargers work reliably?

  - by MGOwen

  The AC adapters for my 2 dell laptops wore out very quickly. One supplies power but won't charge the battery (it's about 3 years old, the other is a bit newer). Both have worn through to the shielding around the notebook connector and look like they'll be unusable soon. Checking user reviews of the replacement adapter on Dell's own website, it appears they usually fail this fast. Apparently Dell does this deliberately to make money (their adapters sell for about 10-15 times what they cost to make). Same with replacement batteries. I can see there are plenty of much cheaper ($50 less) compatible AC adapters on eBay. Does anyone have experience with these? Naturally I'm nervous a crappy knock-off could fry my notebook, but has this ever actually happened to anyone recently? Has anyone had a good experience? Can anyone recommend a good online seller (who doesn't charge nonsensical shipping costs to Australia, preferably?)

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• How to browse to a webserver which is reachable through the SSH port only

  - by GetFree

  I have a server at work which is behind a firewall (the company's firewall) so it is reachable only thrugh port 22 (SSH). I'm able to connect to the server with putty without problems. Also, that server has Apache running and listening on port 80 as usual. But I cant connect to the website using my browser since port 80 (and everyone else) is blocked by the company's firewall. Is there a way I can make my browser to connect to Apache in that server so I can browse the site I'm working on? Thanks.

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• Blocking IP address with port forwarding

  - by Jeff Storey

  I have a website setup behind a router, so the router has the external facing address and it will forward requests to the webserver inside the network. If there are X number of invalid login attempts, that IP address will be blocked from logging in. The problem is that because the site is being accessed through port forwarding, all requests show up as though they are coming from the router address, and thus the router address becomes the blocked IP. I'm not sure if this is a limitation of the router (linksys wrt160n) or if this a more general issue. Is there a way to handle this?

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• Has anyone evaluated NuttX RTOS?

  - by DoxaLogos

  While reading Linux User's Journal today, I stumbled across a little blurb about NuttX RTOS. I checked out their website and was fairly impressed with its feature set and its ability to put it in an 8052! I find it interesting that it supports POSIX which is something I have helped worked on for one of my clients in-house RTOS. This one seems a little more feature rich than the in-house RTOS. Has anyone else heard of NuttX and has given it a try? If so, how does it compare to other RTOS's such as FreeRTOS?

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• SEO for maps-based websites that require user interaction

  - by j0nes

  I have a website that basically shows a lot of locations worldwide on a Google Maps like interface. The map itself is built using the Leaflet library and Open Street Map tiles. In the map, I show markers at each location I have. There is a popup window when I click on a marker that shows additional information and contains links to "detail" pages for this location. I fetch the location data for the viewpoint from an AJAX call from my server, so the additional information is not available in the HTML page itself. The detail pages are the pages my users are interested in. My normal users load the map, search the location they are interested in, click on a marker and click on a link in the popup window. However for search engines, this might look different. As this navigation pattern relies on user interaction, I think they might not be able to find the details page. My questions: Are search engines able to follow a navigation path like outlined above? How can I improve the navigation for search engines? (For example showing textual links below the map, sitemaps...) How important are internal links for SEO?

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• Ideas to tackle unwanted bad press/review on Google's SERP?

  - by Rob

  After Googling our company name to our horror we've found someone on Yelp.co.uk has reviewed our company. On the SERP your eye is immediately drawn to the 2 star review some complete stranger has written, which to be honest is pure slander! The most infuriating thing is the person who reviewed our company has never even been a client/customer. It's a bit like me reviewing a restaurant having never eaten or even been in there! We've sent her a private message on Yelp to remove the review and also sent a complaint to Yelp themselves but have yet to get a reply. We've resisted going mad at the reviewer and also requested that she re-review us having just relaunched our new website (it still riles us that she's not even a client though!). We've had genuine customers/clients review us on Yelp yet this 2 star review remains on Google's SERP. Roughly how long would it take to for our new reviews to over take this review? Does anyone have any suggestions as to how we can push the review off the 1st page of Google's SERP or any creative ways in which we can tackle this issue?

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• Help deciding on language for a complex desktop - web application

  - by user967834

  I'm about to start working on a fairly complex project needing a desktop GUI as well as a web interface and I need to decide on a language(s) to use. This is from an electrical engineering/robotics background. These are the requirements: Program will have to read data from multiple sensors and inputs (motion sensor, temperature sensor, capacitive sensor, infrared, magnetic sensors, etc) through a port on a computer - so either through USB or ethernet. Program will have to be able to send control signals based on this input. Program will have to continuously monitor all input signals at all times - so realtime data. Program will require authentication. Program will need to be controllable from a web interface from anywhere via logging in to a website. Web interface will also need to have realtime feedback once authenticated. What language do you think would best accomplish this? I was thinking maybe saving everything into a database which can be accessed by both the desktop and web app? And would Python be able to do all of this? Or something like a remote desktop app? I know this is a complex project but let's assume I can learn any language. Has anyone done something like this and if so how did you accomplish it?

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• Joomla: Cross site link boxes

  - by Dean Smith

  I am currently evaluating Joomla for use on the the rebuild of our corporate website. One of the features our designs have is spaces for what we've been calling widgets. These widgets include common ones for each page, contact us boxes, section navigation, that all seem pretty easy to implement. The other widgets we would us to highlight specific pages within the site relevant to the one you are on, and are therefore different for each article. We've called these link widgets and these are a pretty common site on many websites. I'm honestly at a bit of a loss as to how to do this with Joomla. From a CMS perspective I'd like to allow users to just select which three link widgets they want when editing the article and have some way of creating the widgets within the CMS as well. Editing the link widget would allow setting a title, a bit of text and selecting the page that it links to. Am I going to be able to do this with Joomla, and if I can roughly how to I go about it ?

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