Note to self: svn:ignore usage # Putting the information here to make retrieving it a bit easier next time. When working with svn and some random IDE I’d really love to avoid checking in any files that are IDE specific (project configuration, classpath, etc.). The command to do that: svn propedit svn:ignore $directory_to_edit After issuing this command you’ll be prompted to enter file patterns for files to ignore or the directory names. ...
Berlin Scrumtisch - February 2011 # The February Scrumtisch Berlin featured a talk by Lyssa Adkins, famously known for her publications on Coaching Agile teams. A mixture of fifty developers, scrum masters, coaches and product owner as well as one project manager followed Marion Eikmann’s invitation. Thanks for organising the event, as well as thank you to Hypoport for providing the venue. In her one-hour presentation she mainly focussed on two core topics: On the roles agile coaches have to fullfill as well as on the skill set needed by agile coaches. ...
Video is up: Paolo Negri on scaling by one order of magnitude #
Video is up - Simon Willnauer on Lucene 4 Performance improvements #
Video is up - Josh Devins on Apache Hadoop at Nokia #
Call for Presentations Berlin Buzzwords - one more week to go # As a little reminder: the Call for presentations of Berlin Buzzwords will close next week on Tuesday, March 1st. Submissions on scalable search, data storage and analysis are all welcome. We are looking for presentations on the core technologies such as Apache Hadoop, CouchDB, Lucene, Redis, Voldemort but also talks on interesting use cases and system architectures. ...
Teddy in Amsterdam # On his trip from SFO back to Europe teddy spent a few days in Amsterdam. He brought back the following pictures of bikes, cheese and the canals: Going to Amsterdam usually is pretty darn dangerous: I tend to return with some toys added to my collection of puzzles. Somehow I tend to be drawn to the shop called Gamekeeper selling them even when I do not remember the exact address or even just the street name:
Apache Mahout Meetup Amsterdam # Last week I was honoured to be invited as one of the two speakers on Apache Mahout at the Mahout meetup in Amsterdam at JTeams offices. After free beer, cola and pizza Frank Scholten gave an overview of Mahout's clustering capabilities. After a brief introduction to Mahout itself he went into a little more detail on how clustering works in general. After that with a selection of Seinfeld scripts he used a fun data set to guide the audience through the process of choosing the right data preparation steps, coming up with good training parameters and finally evaluating clustering quality. ...
FOSDEM - Sunday - smaller bits and pieces # With WebODF the Office track featured a very interesting project that focusses on providing a means to open ODF documents in your favourite browser: Content and formatting are converted to a form that can easily be dealt with by using a combination of HTML and CSS. Advanced editing is then supported by using JavaScript. With Open Stack the following talk focussed on an open cloud stack project that was started by NASA and Rackspace as both simultanously needed support for an open source, openly designed, developed cloud stack that strives for community inclusion. ...
FOSDEM - HBase at Facebook Messaging # Nicolas Spiegelberg gave an awesome introduction not only to the architecture that powers Facebook messaging but also to the design decisions behind their use of Apache HBase as a storage backend. Disclaimer: HBase is being used for message storage, for attachements with Haystack a different backend is used. The reasons to go for HBase include its strong consistency model, support for auto failover, load balancing of shards, support for compression, atomic read-modify-write support and the inherent Map/Reduce support. ...