Sunspot is a great way of integrating Solr search in your Ruby on Rails application. By default searches are performed using the AND operator. For getting results for one of the (multiple) keywords searched for in stead of just an exact match, the operator has to be changed to OR. The most obvious solution would be to change the solrQueryParser defaultOperator in Solr’s schema.xml, but that doesn’t work… 

This problem can be solved by passing a minimum_match parameter on your search, shown as followed:

def search
  @search = MyModel.search() do
    keywords(params[:query]) { minimum_match 1 }
  end
end

Setting this up will require only a single keyword to match, so you get the results as a true OR query!

Thanks a lot to Tony on his blog Tonycode.com

Rethinking the Mobile Web by Yiibu

Interesting presentation with facts and figures about mobile internet usage.

Posted by Bryan Rieger on Slideshare.

Did you know, Tribemonitor:

• Currently contains 10.417.024 unique data points (for example, the total number of friends on a given day);
• Tracks 2.576 individual artists with a total of 22.540 configured data sources (for example a Facebook or Twitter account);
• Does approximately 240.000 Twitter API requests every night;
• Retrieves geo-information of approximately  1.2 million users every night;
• Is completely written in Python, C and Django;
• Uses PostgreSQL for data storage and uses memcached for caching;
• Will soon be updated to a “Version #2” based on an Non-SQL database.