A story of two teams that set out to build a system for the global food delivery chain. The whole story is fictional but each part of it is based on a real problem experienced by a real team.

Join me and observe how the two teams struggle, sprint after sprint, to deliver a correct solution that meets the performance requirements. We'll see how distributed transaction can be both a blessing and the curse and how difficult it is, in the real life, to implement idempotent business logic. But don't worry, as any good horror story, this one also has a happy end.

Szymon Pobiega https://twitter.com/SzymonPobiega https://exactly-once.github.io/

Szymon works an engineer at Particular Software, the makers of NServiceBus. His main areas of expertise are Domain-Driven Design and asynchronous messaging. He is especially interested in the intersection of these two topics -- in the patterns and tools for ensuring all messages are processed exactly once and in the correct order.

In his free time Szymon plays with Lego, building models of real-life off-road vehicles.

Sponsor:

This time we will be kindly hosted (and fed with pizza and beer) by Lendable (https://www.lendable.co.uk/).