Michael Barker and Martin Thompson's talk at the last QCon on the LMAX Disruptor, and other nifty lock-free techniques and patterns. 'Martin Thompson and Michael Barker explain how Intel x86_64 processors and their memory model work, along with low-level techniques that help creating lock-free software.'

'GC Strategies for Event Processing Systems on the JVM'

great slides, via HN. recommends a canonical Hadoop long-term store and a quick, realtime, separate datastore for "not yet processed by Hadoop" data

from Malcolm Hutty, Head of Public Affairs at LINX (UK ISP organisation). insightful and a good summary of the state of the art in ISP-hosted filtering/blocking solutions.  The final few slides are especially useful