This is the picture that opens the tutorial on non functional properties of event processing that has been delivered yesterday within the DEBS conference by Tali Yatzkar-Haham and myself. It shows variety of various cakes, each of them can be entitled: "cheese cake". Likewise, there is a substantial variance among event processing systems based on their non functional properties. We surveyed a collection of topics on performance, scalability, availabilty, usability and security/privacy. One of the conclusions is that the usability area lacks comprehansive research. At the end of the day we went (with some other friends) to eat dinner in the cheese cake factory in White Plains (I did not eat any cheese cake).
The tutorial is now available on slideshare - enjoy!