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SkillsCast

Know the Flow! Events, Commands and Long-Running Services

26th April 2018 in London at CodeNode

There are 23 other SkillsCasts available from DDD eXchange 2018

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Strategic design does not stop at defining boundaries around business capabilities" - it should reach out for truly smart endpoints, emphasize autonomy and the need for more coarse-grained and asynchronous APIs. The long-running services behind such APIs feel responsible for their business and sort out most problems without leaking internal troubles and bothering their clients. While long-running services will leverage domain events for decoupling, they will often expose their core functions as commands - in order to minimise coupling! Extracting the customer-facing core processes of companies into dedicated, long-running services allow to keep sight of larger-scale flows, without violating bounded contexts or introducing god services!

In this talk, Martin explores strategic design in the light of understanding the long-running nature of delivering many real-life business capabilities. But he will also show the practical side of the equation: implementing long-running behaviour of services, requiring proper reactions on failures, timeouts and the compensating actions sagas are known for. A new generation of lightweight, embeddable and scalable state machines and process engines assist in this endeavour. Expect real-life experience and many examples!

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Know the Flow! Events, Commands and Long-Running Services

Martin Schimak

For over a decade Martin has been working in complex domains like energy trading, telecommunication or wind tunnel organization. As a coder, he has had a soft spot for readable and testable APIs and enjoys working with sophisticated but lean state machines and process engines. As a domain coder, he is into Domain-Driven Design and integrates methods which shift his focus from technology to the user value of what he does. Martin is a contributor to several projects on GitHub and speaks at meetups and conferences like ExploreDDD, O'Reilly and KanDDDinsky.

SkillsCast

Please log in to watch this conference skillscast.

697052366 640

Strategic design does not stop at defining boundaries around business capabilities" - it should reach out for truly smart endpoints, emphasize autonomy and the need for more coarse-grained and asynchronous APIs. The long-running services behind such APIs feel responsible for their business and sort out most problems without leaking internal troubles and bothering their clients. While long-running services will leverage domain events for decoupling, they will often expose their core functions as commands - in order to minimise coupling! Extracting the customer-facing core processes of companies into dedicated, long-running services allow to keep sight of larger-scale flows, without violating bounded contexts or introducing god services!

In this talk, Martin explores strategic design in the light of understanding the long-running nature of delivering many real-life business capabilities. But he will also show the practical side of the equation: implementing long-running behaviour of services, requiring proper reactions on failures, timeouts and the compensating actions sagas are known for. A new generation of lightweight, embeddable and scalable state machines and process engines assist in this endeavour. Expect real-life experience and many examples!

YOU MAY ALSO LIKE:

Thanks to our sponsors

About the Speaker

Know the Flow! Events, Commands and Long-Running Services

Martin Schimak

For over a decade Martin has been working in complex domains like energy trading, telecommunication or wind tunnel organization. As a coder, he has had a soft spot for readable and testable APIs and enjoys working with sophisticated but lean state machines and process engines. As a domain coder, he is into Domain-Driven Design and integrates methods which shift his focus from technology to the user value of what he does. Martin is a contributor to several projects on GitHub and speaks at meetups and conferences like ExploreDDD, O'Reilly and KanDDDinsky.

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