Real production use: Reactive design for the manufacturing industry by Roland Kuhn The Reactive Manifesto motivates the reactive tenets with large-scale systems that serve millions of users worldwide, needing exorbitant data size and bandwidth coupled with sub-second latencies. This presentation puts the spotlight on the other end of the spectrum: the systems that operate manufacturing processes and logistics are vital to a factory’s success. Data sizes and rates are easily manageable with today’s hardware, the top priority is absolute reliability. In these systems resilience is the prime motivator for loose coupling, elasticity is just a consequence. This presentation explains the architecture approach taken at Actyx and discusses the suitability of different patterns in this context, including some war stories.

1. Real production use:
Reactive design for the
manufacturing industry
Dr. Roland Kuhn
May 25, 2018

2. What is a factory?

4. What is a production
system? ?

6. So what does a factory do?

7. machines
tools labor
consumables
electricity
input materials output materials
waste
Icons here and on following slides made by Freepik from www.flaticon.com

9. Most factories are small

10. Typical IT systems in factories
ERP enterprise resource planning
DMS document management (a.k.a. fileshare)
BI business intelligence (a.k.a. Excel)
CAQ computer-aided quality
devices printers, scales, access control, storage, …

11. For context:
What does Actyx do?

12. Enterprise
Software
Personnel
MachinesDevices

13. Characteristic data sources
Without machines: the opposite of Big Data!
timescale datasize
ERP per minute or per hour kilobytes
DMS per day megabytes
personnel per minute or per hour bytes
devices per minute or per hour if used by humans bytes to megabytes
machines per second bytes to megabytes

14. Architecture v1:
microservices

15. CassandraLagom microservices

16. Cloud microservices: the good parts
_ rock solid programming model
_ excellent cloud services support
_ standards for edge connectivity

17. Cloud microservices: the drawbacks
_ it does not work while something is wrong with the network
_ not all data are allowed to leave factory premises

18. Architecture v2:
less servers, actually

19. postgresDevice management Azure SQL
Data
GW
assets

20. Important patterns for a resilient mesh
_ let it crash
_ coordination-free replication wherever possible
_ event-sourcing
_ domain objects
_ pull-based messaging instead of circuit breakers
see also https://www.reactivedesignpatterns.com/

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22. Conclusion
Loosening the coupling implies losing control.
Not all cases should be handled by the system.

23. use code jbeachrdp
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www.reactivedesignpatterns.com

24. Actyx AG, Ridlerstraße 31b, 80339 Munich, Germany
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