Dealing with scale and concurrency in today’s web and mobile services can require complex business logic in your application. To achieve high scale in the cloud, often developers have to coordinate and track state for steps in application processes distributed across remote data centers. Come to this session to learn how Amazon Simple Workflow (SWF) manages and coordinates your application sequences in “workflows” by our AWS pay-as-you-go service. We will walk through real-world examples of customers who are basing their high-scale, fault-tolerant applications on Simple Workflow today.

2. coordinating work
across network boundaries
machines
time
event triggers
by software or people

3. app
logic has different paths
does work over time
needs to react to events
must be resilient to failure
conditions
executes work at the same time across multiple servers
needs to track the history of what work happened

4. types of apps that use Amazon Simple Workflow

5. processes
activity worker activity workers
activity workers
workflow worker
Amazon
Simple
Workflow

6. networks
EC2
EC2, S3, etc.
Amazon
Amazon
Simple
Simple
Workflow
Workflow
Service
EC2, S3, etc.
Corporate Data Center

7. build
structure
run
* If Java is your choice, use the AWS Flow Framework for easier integration

10. 10

11. Sequential processing
Slow, unscalable
• 1 image  1-3 seconds
• 10K images  10-30K seconds  3-8 hours
• 100K images  100-300K seconds  30-80 hours
• Ouch!
11

13. process workflow
complete tasks
manage workflows
create Workflow
tasks Complete Worker
Simple Workflow
Workflow Worker process Service
image Admin Master
tasks Server
Image Processing Worker Static Image
Task List
Auto Scaling
Workflow Server
Static Image
Auto Scaling Group Cloudwatch Alarm

26. Wednesday, 11/28/2012 3:25PM
Wednesday, 11/28/2012 4:30PM

27. https://console.aws.amazon.com/swf/home?region=us-east-1
http://aws.amazon.com/swf/
https://forums.aws.amazon.com/forum.jspa?forumID=133&start=0
http://aws.amazon.com/code/2535278400103493

28. We are sincerely eager to
hear your feedback on this
presentation and on re:Invent.
Please fill out an evaluation
form when you have a
chance.