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sfcrazy writes "In this exclusive interview MySQL founder Michael Widenius talks about the reasons of decline of MySQL, what Oracle is doing wrong and how MariaDB is fast replacing it. There are quite some interesting information in this interview. The take out of this interview is — '...there is no reason at all to use MySQL 5.5 instead of MariaDB 5.5. The same will be true for the next generation.'" Of course, he has an economic interest in getting people to use MariaDB. Hard to argue that Oracle isn't evil though.

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waderoush writes "If you visit Menlo Park, CA-based Willow Garage, you'll meet a $400,000 humanoid robot called PR2 that has stereo vision, a pair of dextrous arms, and enough smarts to roam the building indepedently and even plug itself into the wall when it needs to recharge. But in a sense, PR2 is just a demo. The real action at Willow Garage is around ROS, the Robot Operating System, a free meta-operating system that's already being used by hundreds of roboticists around the world and may soon be handed over to an independent foundation analogous to the Apache Software Foundation. Brian Gerkey, Willow Garage's head of open source development, says 'What we need is a LAMP stack for robotics,' and hopes that ROS will jumpstart innovation in robotics in the same way Linux and other free software components provided the foundation for the Internet boom. Today's roboticists 'have to come at the problem with a very deep expertise in all aspects of robotics, from state estimation to planning to perception, which automatically limits the number of people capable of building new things,' Gerkey says. 'But by providing a basic toolset analogous to the LAMP stack, we can get to a point where all you need to know is how to write code and what you want your robot to do.'"


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Screenshot of new Lite pager option in Views

The Views Litepager module solves a problem of scalability for sites with large amounts of content. Drupal's core pagination system creates a pager navigation that shows exactly how many pages of content exist for the content list. This requires that a COUNT query be executed based on the query used to generate the list.

While COUNT queries are blazingly fast on tables with MySQL's MyISAM engine, they are painfully slow when using InnoDB tables which is the recommended engine type for high traffic Drupal sites. The COUNT queries quickly degrade the more rows a table has.

The Views Litepager module solves this problem for Views pagination by providing a pager option that does not require a COUNT query to be executed. This "Lite" pager is only slightly less useful than Drupal's core pager in that it does not allow you to navigate to the "last" page and does not show how many total pages of content there are. But for large sites, this small cost in features is worth the boost in performance by ridding your pages of the painfully slow (and sometimes crippling) COUNT queries.

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