Destination Automation: Automating Processes in Modern Hipster Architectures

•

2 likes•1,015 views

Slides for my talk at #DestinationAutomation in July 2020. Code examples are here: https://github.com/berndruecker/ticket-booking-camunda-cloud

Technology

Automating Processes
in Modern
Hipster Architectures
@berndruecker

Example
Payment
Seat
ReservationBooking
Ticket
Generation

REST?
Payment
Seat
ReservationBooking
Ticket
Generation
REST
REST
REST
REST

Weaknesses: Latency creep
Payment
Seat
ReservationBooking
Ticket
Generation
REST
300 ms
1150 + x ms
600 ms
250 ms

Weaknesses: Availabiliy erosion
Payment
Seat
ReservationBooking
Ticket
Generation
REST
99 % uptime
99 % uptime
99 % uptime
96 % uptime

And what about consistency?
Payment
Seat
ReservationBooking
Ticket
Generation

What‘s hipster?
Event-Driven
Reactive
Distributed Systems
Microservices
Agile
Streaming
Cloud-Native
Eventual Consistency
Kubernetes
Serverless

Event Bus
Event-Driven Choreography
Payment
Seat
Reservation
Ticket
Generation
Ticket
booked
Seat
reserved
Payment
received
Ticket
generated

What we wanted
Photo by Lijian Zhang, available under Creative Commons SA 2.0 License and P..19 / CC BY-SA 4.0
@berndruecker

The danger is that it's very easy to make
nicely decoupled systems with event
notification, without realizing that you're
losing sight of that larger-scale flow, and
thus set yourself up for trouble in future
years.
https://martinfowler.com/articles/201701-event-driven.html
@berndruecker

How-to monitor
event-driven processes?
https://camunda.com/learn/webinars/
microservices-landscape-workflow-automation/

Orchestration
Payment
Seat
ReservationBooking
Ticket
Generation
This component orchestrates
the others
coordinates

Orchestration ≠ Synchronous Communication
Payment
Seat
ReservationBooking
Ticket
Generation
Kafka
AMQP
FaaS
REST

A workflow engine can help
Payment
Seat
ReservationBooking
Ticket
Generation
REST

A workflow engine can help
Payment
Seat
ReservationBooking
Ticket
Generation
REST
A workflow engine
Keeps persistent state
Can wait
Can retry
Can escalate
Can compensate
…

Berlin, Germany
mail@berndruecker.io
@berndruecker
Bernd Ruecker
Co-founder and
Chief Technologist of
Camunda

Architecture
Payment
Seat
Reservation
Ticket
Generation
REST
Booking
Java Spring Boot App
Camunda Cloud
Client
Camunda Cloud
Workflow Engine
AMQP
REST
Workflow engine
subscription
FakeServices
NodeJs App
https://github.com/berndruecker/ticket-booking-camunda-cloud

Camunda Cloud is based on Zeebe (OSS workflow engine)
http://zeebe.io/

Can your company
leverage your
hipster architecture?
Shutterstock
You need to
change business
processes and
customer
experience!

@berndruecker
happy
case
failure
case
Redesign your business process accordingly!
Or some interface
to poll for status
Sync in happy case
Async response

Summary
• Synchronous call chains have weknesses
• Event-driven choreography is not a magic cure
• Orchestration
• Helps to avoid chaos
• Can be handled within one service (decentral)
• Does not mean synchronous communication
• To leverage a great hipster architecture you need to adjust
business processes and customer experience

mail@berndruecker.io
@berndruecker
https://berndruecker.io
https://medium.com/berndruecker
https://github.com/berndruecker
https://www.infoq.com/articles/events-
workflow-automation
Contact:
Slides:
Blog:
Code:
https://www.infoworld.com/article/3254777/
application-development/
3-common-pitfalls-of-microservices-
integrationand-how-to-avoid-them.html
https://thenewstack.io/5-workflow-automation-
use-cases-you-might-not-have-considered/

Slides from my keynote at CamundaCon Live 2020.2 Title: The Return of Process Automation! Abstract: This keynote will foster your understanding of how (business) processes can generally be implemented and monitored. I will compare different approaches, from batches over streaming, to workflow engines. You will understand the impact on agility and what is different in modern architectures, as well as learning about choreography and orchestration. You will learn about criteria that have crystalized as success factors in many real-life scenarios. You will also understand the failures of BPM and process automation tooling in the past, which often lead to skepticism amongst different stakeholders.

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