Make a widget to choose a language of content. Earn $500!

Deadline: 26.02.2015
Winner announcement date: 28.02.2015

Make a widget which allows registered users to choose a content language.
Developer decide what UI will be made and used for the widget.
It is necessary to write the data of language chosen by users and to store the data to a DB.
One torrent may keep content in a different languages.
Choosing a language user do not change the existing one!
User can choose a language one time only for the one torrent.

General conditions:

• Make a single module. Use as less other modules interactions as you can.
• It has to be a cross-platform and cross-browser solution
• It supposed to work with high load website so if your scripts needs many data access, use caching.
• Our server provides < 200 ms page generation speed. Server configuration speed is below.
  Software and libs:
  PHP 5.5.16 with handlersocket, redis (from pecl), timezonedb modules.
  Percona 5.5.40
  Sphinx 2.2.7
  Redis 2.4.10
  Yii 2.0.3
  JQuery 2.1.3
  DB server configuration:
  CPU: Intel Xeon E5-2650, 32 cores
  RAM: 96 Gb.
  SSD
  Web server configuration: CPU: Intel Xeon E5-2650, 16 cores
  RAM: 64 Gb.
  How the winner will be chosen?:
  First 5 pull requests, matching all the requirements completely will be candidates to win
  We will choose the best UX
  We will evaluate the code quality
  

More info