Apache has released Kafka 0.8, the first major release of Kafka since becoming an Apache Software Foundation top level project. Apache Kafka is publish-subscribe messaging implemented as a distributed commit log, suitable for both offline and online message consumption. It is a messaging system initially developed at LinkedIn for collecting and delivering high volumes of event and log data.
LinkedIn has open sourced IndexTank, a document indexing engine that runs on the cloud and lets users customize the indexing process and tweak the results.
Last week SpringSource released a first milestone for Spring Social, a Spring-based template for accessing Twitter, LinkedIn, Tripit and Facebook from within Java programs. Rather than exposing generic, URL-based APIs, the Spring Social APIs are designed specifically for each site and make integrating with those sites straight forward. InfoQ examines the new API as well as some alternatives.