Step Functions

Question 1

What is Step Functions?

Answer 1

Build serverless visual workflow to orchestrate your Lambda functions

Question 2

How is Step Functions flow represented?

Answer 2

as a JSON state machine

Question 3

What features have Step Functions?

Answer 3

sequence, parallel, conditions, timeouts, error handling…

Question 4

What can you implement in Step Functions moreover AWS Services?

Answer 4

Possibility to implement human approval feature

Question 5

What represent each color in Step Functions?

Answer 5

• Red: Failed
• Blue: In Progress
• Green: Success
• Gray: Cancelled

Question 6

What happens in Step Functions when a state reports an error?

Answer 6

By default, when a state reports an error, AWS Step Functions causes the execution to fail entirely

Question 7

How can you deal with Step Functions errors?

Answer 7

Retrying failures - Retry:
o	IntervalSeconds
o	MaxAttempts
o	BackoffRate
Moving on – Catch
o	ErrorEquals
o	Next
Best practice is to include data in the error messages

Question 8

What is the comparisson between Step Functions Standard and Express Workflows?

Answer 8

The express workflows are going to be much cheaper. They’re intended for a large number of workflows with small duration, whereas standard workflows are going to be much longer and with a slower execution rate

Question 9

What is max duration in Step Functions Standard Workflows?

Answer 9

1 year

Question 10

What is max duration in Step Functions Express Workflows?

Answer 10

5 minutes

Question 11

What is supported execution start rate in Step Functions Standard Workflows?

Answer 11

Over 2000 per second

Question 12

What is supported execution start rate in Step Functions Express Workflows?

Answer 12

Over 100000 per second