SWF

Question 1

What are workers?

Answer 1

Programs that interact with SWF to get tasks, process received tasks, and return results.

Question 2

What is a decider?

Answer 2

Program that controls the coordination of tasks. Ordering, concurrency, and scheduling.

Question 3

True or False. Tasks are assigned more than once.

Answer 3

False. Only once and never duplicated.

Question 4

What is the longest time frame for a workflow?

Answer 4

One year. Measured in seconds.

Question 5

When should SWF be used?

Answer 5

Any time there is human interaction with the workflow.

Question 6

What is the maximum amount of workflows in an SWF domain?

Answer 6

10,000

Question 7

List major use cases for SWF

Answer 7

• Video encoding using Amazon S3 and Amazon EC2
• Processing large product catalogs using Amazon Mechanical Turk
• ## Migrating components from the datacenter to the cloud