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Event Sourcing Applied

Jayway Stockholm

Monday, January 24, 2011 from 4:00 PM to 7:00 PM (CET)

Event Sourcing Applied

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Free, but invoiced 300 SEK if not showing up Sold Out Ended Free  

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Rickard Öberg, Jayway

Rickard Öberg is a Swedish Java programmer, notably for development of JBoss, Webwork and XDoclet projects. He moved to Malaysia in 2008.

He is working on Qi4j project, a Composite Oriented Programming framework implemented in Java for domain centric application development, including evolved concepts from AOP, DI and DDD [1] which he cofounded with Niclas Hedhman.


Event Sourcing is a completely different way to handle persistence than just having the current value of an object (state) in a database. Event Sourcing means that you save all the events that change an object's value (state) and that one can follow its history of changes. Martin Fowler has described Event Sourcing in his book on Enterprise Application Architecture.

In this seminar, Rickard will talk about how he used Event Sourcing in the StreamFlow of product that he works with and how it works together with other datasources. By Event Sourcing one has the ability to update multiple data sources and have a full opportunity to comply with any changes to a domain object. You can even purge the database with all values and completely recreate it by sequential play back all the content in the event log. The database becomes more of a cache of current values (state). Event source then provides an unprecedented opportunity to be able to handle more load on the system when the database is no longer becomes the natural bottleneck. Code samples will be in Java, but the principles are the same also. NET,Ruby, C + +, etc.


Mon 24 Jan, 2011, 16:00-19:00


Drottninggatan 108, Jayway i Stockholm AB, 3tr


If the front door is closed, pls call Johan Näsman's mobile: 070-508 74 77


We will serve a sandwich and non-alcoholic beverages.

We have set a maximum of 30 vistors to this event.

This event is organised as part of Jayway Stockholm Knowledge Network
Join: (http://groups.google.se/group/jwsknownet)

Registration (IMPORTANT):

This seminar is free of charge. We will invoice 300 SEK, those who do not show up and have not deregistered.

Have questions about Event Sourcing Applied? Contact Jayway Stockholm

When & Where

Jayways kontor
Drottningg 108
113 60 Stockholm

Monday, January 24, 2011 from 4:00 PM to 7:00 PM (CET)

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Jayway Stockholm

Jayway is a software innovation consultancy, helping our clients create new products and services. From ideation and concept design to development and beyond. We have 170 specialists in Malmö, Stockholm, Copenhagen and San Francisco. More info at www.jayway.com

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