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Let your microservices flow!
bernd.ruecker@camunda.com
With thoughts from http://flowing.io
@berndruecker | @martinschimak
AT&T
Bounded context and microservices
Bounded
Contexts
=
Microservices
Shop Payment ShippingInventory
• Independent components
• Independent deployments
• Decoupling between components
• Dedicated teams (to fight conways law)
• Autonomy of technology decisions
• No horizontal team boundaries
• New DevOps paradigms
https://www.flickr.com/photos/12567713@N00/310639290
Increasing
complexity
of relation-
ships
Events
Bounded
Contexts
=
Microservices
Order
placed
Shop Payment Shipping
Business
Outputs /
Domain
Events
Inventory
Payment
received
Goods
fetched
Goods
shipped
It is not SOA
Bounded
Contexts
=
Microservices
Order
placed
Shop Payment Shipping
Business
Outputs /
Domain
Events
Inventory
Payment
received
Goods
fetched
Goods
shipped
„smart endpoints
and dumb pipes”
Elastic Resilient
Responsive
Message-driven
Value
Form
Means
4 traits of a reactive system, from http://reactivemanifesto.org/
The value of event- or message-driven systems
Microservices Domain Driven Design Event Driven & Reactive
Collaboration using eventflows
Order
placed
Payment
received
Goods
fetched
Goods
shipped
InventoryPayment ShippingShop
Live coding
The 7 sins of workflow
Zero-code suites
Homegrown
engine
Granularity
bloopers
BPM monolith Stakeholders
habitat violation
Over engineering
No engine Wrong engine Wrong usage
http://blog.bernd-ruecker.com/
Bernd Rücker
Consultant & Evangelist
10+ years workflow
http://bernd-ruecker.com/
bernd.ruecker@camunda.com
Co-founder Camunda
http://camunda.org/
Avoid alarming by management attention
Support operations
Distributed systems
Hug your business stakeholders more often!
Next generation workflow technology?
Stateless engine + RDMS
RDMS
New kid on the block
https://zeebe.io/
Zeebe
Broker
Your
application
Binary (MsgPack)
Support streaming & batching
Client
Horiziontally
scalable
Append only log / event sourcing
Code online:
https://github.com/berndruecker
Slides online:
https://bernd-ruecker.com
Blog:
https://blog.bernd-ruecker.com
Feedback:
https://bernd-ruecker.com/feedback With thoughts from http://flowing.io
@berndruecker | @martinschimak
Thank you!

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