How The Guardian OpenPlatform (mostly) moved from Java to Scala

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guardian.co.uk is largely a Java development shop. We implemented our new Content API (https://content.guardi... (https://content.guardianapis.com)) as our first project in Scala, starting at the beginning of 2010. I'll talk about how we managed the transition and how we learnt scala as a team, with lots of practical examples and code samples.

The Guardian's Open Platform initiative enables partners to build applications with The Guardian. As part of this initiative, The Guardian provides the Content API - a rich interface to all The Guardian's content and metadata back to 1991 - over 1 million documents. This talk starts with a brief overview of the latest iteration of the content API. It will then cover how we implemented this in Scala using Solr, addressing real-world problems in creating an index of content:
how we represented a complex relational database model in Solr
how we keep the index up to date, meeting a sub-5 minute end-to-end update requirement
how we update the schema as the API evolves, with zero downtime
how we scale in response to unpredictable demand, using cloud services

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