|Sent on:||Tuesday, February 26, 2013 3:43 AM|
Thanks for the responses. My setup is this:
EC2(app) <-> EC2(db,replica set) <-> EBS(raid,replica set)
In the near future I may wrap the EC2(app) instances in an auto-scaler. Klaus, to answer your question, I can't run cron from the EC2(app) instances because they won't always be up. The auto-scaler will handle the launching of them. It seems to me that I need an EC2 instance (micro-sized) to act as an always-on controller. It would run the cron jobs and pass messages to the auto-scaler. If that's the case, then I need something to handle the messaging between the controller and the auto-scaler. This sounds like SQS but Amazon recommends SWF to handle cron. Chintan (and others), based on what I need do you think that SWF will handle this? If not and I need to roll my own, how will messages get passed from the controller to the auto-scaler? I checked out RabbitMQ and Gearman but I’m trying to avoid third-party solutions (although I will use one if absolutely necessary) because they present their own overhead and it seems like SQS and/or SWF should be able to handle this.