The talk will be held on May 13th, 2014. So if you're nearby, and would like to use this opportunity to see the talk or chat about whatever IT-related, I would be glad to do so.
Here's the talk abstract:
Log, or historical storage of system events, has always occupied central place in architectures of all traditional databases and analytical systems, but nowadays it serves more and more as backbone of modern distributed systems. Some of architectures and tools which use this type of data storage will be presented - Kafka message broker, Datomic database, CQRS/Event-sourcing architecture ...