Stepfunctions

Basics

• Address limitations of lambdas
• Stepfunctions allow you to create state machines
• Maximum duration for state machine execution in step function is 1 year
• Once can choose either a standard workflow or express workflow
• Standard workflow is default and has 1 year execution duration
• Express workflow has 5 minute execution duration
• Amazon States Language(ASL) is used for defining state machines

Types of States

• Succeed or failed state
• Wait State - Certain duration or upto specific point in time
• Choice - Different paths based on input
• Parallel - Branches within state machine
• Map - Accepts list of items & then for each item a specific action is performed
• Task - Single unit of work. These are states that do actions