I have a server application for numeric math intense calculations. A user can spawn a "process" and poll the progress until the calculation has finished.
Now I want to migrate to the Amazon AWS. I really like the idea of Auto Scaling and Elastic Load Balancing.
If I use Elastic Load Balancing, how can I make sure, that the users requests (progress and final result) stay at the EC2 unit, that was used to calculate the results.
If there is no way to make this work. It's probably a better way to update the database e.g. SimpleDB and let the user use the database for progress and result queries?