Goran Juric will talk about Haproxy - TCP/HTTP load balancer. Learn what that exactly means and how you can leverage it to increase your web sites availability or distribute the load between multiple servers.
Robert Sorn will talk about switching from SphinxSearch to ElasticSearch on Njuskalo.hr. Why? What's better? How to learn it fast and not to messup? Warp 2, 3, ...? If your thinking about elastic this is the talk for you.