Last week went through stuff from the first day of Geeon 2017 conference, which took place between 17th to 19th May in Kraków. Today we will continue and cover seven talks I’ve been to on day two. There will be a lot of reactiveness, events, architecture, APIs, security and some pretty low level topics.
Jakub Pilimon: Event Sourcing
Command query responsibility segregation, event sourcing and event driven architectures are typical buzzwords on conferences nowadays. Jakub introduced the idea and confronted the approach with relaying on object-relational mapping to do the job. There was quite a lot of live code and Hibernate guts debugging. We heard stories on how Twitter almost collapsed in 2012 due to using the same models for writing and reading data and how to lose a girlfriend due to different projections of event log in the relationship. Read the rest of this entry »