Linux/Unix

Online community of global citizens who take action on the major issues facing the world today

Avaaz.org is a community of global citizens who take action on the major issues facing the world today. The core of the model of organizing is the email list, operated in 13 languages. By signing up to receive the alerts, you are rapidly alerted to urgent global issues and opportunities to achieve change. Avaaz members respond by rapidly combining the small amounts of time or money they can give into a powerful collective force. In just hours Avaaz can send hundreds of thousands of messages to political leaders telling them to save a crucial summit on climate change, hold hundreds of rallies across the world calling for action to prevent a genocide, or donate hundreds of thousands of euros, dollars and yen to support nonviolent protest in Burma. The main challenge is millions of registered users who create a huge load. By pre-generating some pages and some statistics we achieved significant performance growth. As a result we are able to raise millions of dollars during 2 days of some campaigns.

Testing System

Blue Ribbon LLC provides schools and districts in Connecticut with an assessment tool that will provide a state specific product, with a user friendly interface, superior flexibility and unparalleled variety of question types. Our engine offers schools an unlimited number of assessments per year, in any subject, using any skill list. We offer an assessment solution for all district assessment needs, including CMT preparation. QArea was engaged to create the web interface for the testing system for American schools. A significant part of web interface is Reports system. The main effort was done on data queries optimization and data caching to provide great performance of Reports system. The testing system allows creating custom subjects and custom tests and sharing them with other schools using highly customizable permission and privileges system. We used PHP 5, our own framework, Javascipt/Ajax/XHTML and MySQL as data source. We also used FPDF library to generate reports in PDF format for printing.

All possible business that connected with interchanging of information: messages, documents, objects, etc.

Community System addresses the growing pains of teams being overloaded with information scattered across various communication channels, most notably congested email inboxes. Community System Workplace, our flagship product, allows ad hoc, cross-organizational teams to easily access, update and share team knowledge on their computers and within the context of their activities. Community System Workplace, provides you with a virtual workspace to communicate with your team members and manage all project related content - all within one space. The workspace is stored on each member's computer and when members get online, their computers synchronize (via peer-to-peer technology), guaranteeing that all team members have access to all the latest content. Community System Workplace is ideal for intensive team work environments with one or more of the following characteristics:

• Teams are composed of members from multiple organizations
• Members are active in several teams concurrently
• Members exchange rich content frequently and need to be able to capture all related communications both when they are online and offline
• Members use disparate operating systems, applications, and communication tools
• Teams form ad hoc without requiring IT support and administration

Social shopping community

DealBundle is social shopping community created and supported by members for deal fanatics. At DealBundle you can find quality deals submitted by members from around the world. The community determines what deals will be included within DealBundle based on ratings and popularity. Deals that have been promoted to DealBundle can still be rated and commented on. In-fact, you can view the "Most Popular" within DealBundle from the homepage (it is populated in real-time, so check it often for the best of the best)! The web site has a powerful admin part with intensive use of AJAX. QArea Inc. has created plug-ins for FireFox and Internet Explorer for the quick deal postings. Users can share their deals, post comments to the posts, can communicate via integrated webmail. The site has unlimited categories nesting, stars rating (like yahoo has), tags (like gmail and docs.google.com have), power search engine, black list words filtering. Dealbundle also uses XML and a lot of JavaScript to make the site quick and user-friendly.

The internet Newspaper: news blogs video community

The Huffington Post portal was launched May 9, 2005 and very soon it became extremely popular.

While one reason of the apparent success of this portal is that their contributors are popular journalists and well-known personalities from politics, business, and entertainment, the other reason is that the development team has been able to provide a technical solution that was up to the challenge.

Task:

To implement a news portal capable of sustaining heavy load, including peak load, and convenient for both visitors and authors of the entries.
 

Challenge - making definite entries appear among the results of running search engines queries, SEO optimization; - simultaneous maintaining of a large number of users; - quick generation of pages that contain dynamic and static data.

Solution

The portal is based on the MovableType platform, which has been modified to minimize the number of database queries and to improve performance. To load a server in order to process pictures, CSS and other statistic content, Amazon S3 is used.

To ensure stable and efficient work under heavy and peak loads we have used the memcache technology, which is a general-purpose distributed memory caching system that allows speeding up dynamic database-driven websites by caching data and objects in memory to reduce the number of times the database must be read.

QArea developers have implemented a rather serious new functionality for this site: basing on Google Maps API it was created our own custom map that operates a large number of images generated by our team, works with large amount of data (about a million rows) and supports a huge number of users.

A powerful statistics system has been implemented in the back-end: there is a statistics of tracking of entries, statistics of visits referred from different search engines. There is also statistics of the sites referring to huffingtonpost.com and general tracking of keywords/key phrases which can be used to refer the users to the site.

Result

The site has been featured on the main page of Yahoo several times. The site lives perfectly with 200+k visitors per hour.

http://qarea.com/news_pages/news76/news-details.php