Brief overview of AWS Step Functions, state machines, and design tricks. Presented as a lightening talk at CloudCamp London March 2018 - Hitchhiker's Guide To The Galaxy Special

1. So long,
and
thanks for
all the
state
machines @joepindar

2. @joepindar

3. @joepindar

4. State Machine
or
State
Transition
Diagram
@joepindar

5. TCP State
Machine
(Stevens)
@joepindar

6. “Happy
Vertical
People
Transporter”
Control
Systems
(https://www.cs.cmu.edu/~luluo/Courses/
18540PhDreport.pdf)
@joepindar

7. Pattern
Matching
(Russ Cox - RE2)
@joepindar

8. 7 States Of Step
Functions
@joepindar
(https://states-language.net/spec.html)

9. Useful Things:
1) Towel
2) The sequence trick…
@joepindar

10. Useful Things:
1) Towel
2) The sequence trick…
State
Transition
@joepindar

11. State
Machines
Highlight
Good
Practices

12. Bottlenecks @
Pret
Scaling?

13. Bottlenecks @
Starbucks
Async
return path

14. “There was a point to this story,
but it has temporarily escaped
the chronicler’s mind.”
@joepindar

15. Step Function
= Higher Order Practice

16. Good for…
- prototypes
- waiting ops

17. Meh for…
- volume ops