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The Wageindicator Foundation deploys Plone for it's world-wide portals on wage information. Moreover, Plone serves as an application platform for most of the web based tools used to create questionnaires, salarychecks and other interactive content. The Wageindicator Foundation was started in 2000 in the Netherlands, and is now the hub of an international collaboration between universities, research institutes, trade unions and commercial parties. The goal of the foundation is to share and compare wage information, and so to contribute to a transparent labor market. The ideological stance of the foundation means that Open Source and free software is preferred. The separate sites collect over 400.000 visitors per month, served by four clusters of two machines each, hosted in the USA, India and the Netherlands. Techniques involved are HA-Clustering, load-balancing, caching, remote distribution of new releases for software.
Citation preview
Wageindicator Foundation: a Case Study
Huub Bouma
October 10, 2007
Introduction
• What is WageIndicator
• Organisation
• Questionnaire technique
• Web portals
• System architecture
What is WageIndicator
• Websites containing information about work and income
• Per country and per target
• Income questionnaire
• Salarycheck
Organisation
• WageIndicator Foundation
• goal: labor market transparency
mission statement:
”Share and compare wage information. Contribute to atransparent labor market. Provide free, accurate wage datathrough salary checks on national websites. Collect wage datathrough web surveys.”
People involved
• scientific research
• datamanagement
• content
• management
• marketing
• technique
Techniques overview
• Salary Survey
• Questionnaire Management System (QMS) for constructingthe survey
• WageIndicator web sites
Survey technique
• engine (socrates) built with java
• GPL license
• modelled after the w3c XForms standard
• engine reads XML models
Questionnaire Management System
• surveys are constructed with the QMS web application
• only available for the survey designers
• plone application
• Custom i18n layer
Web sites
• Simple Archetypes based product
• Very simple, but flexible enough
• skinning for partners
Architecture
• HA architecture (2 production environments)
• Websites behind Apache and Squid
• Remote deployment (scp + quickinstaller)
• Content only managed on acceptance environment
• Synchronizing (from ACC to PRD)
• future: real Plone HA clustering, and load balancing
Statistics
• 37 plone portals
• 20 countries
• 10 servers: India(2), USA(4) en the Netherlands(4)
number of unique visitors for loonwijzer.nl
• last month: 404,772
• day peak: 100,000