title: run scheduled task in AWS without cron
body: <p>Currently I have a single server in amazon where I put all my cronjobs.  I want to eliminate this single point of failure, and expose all my tasks as web services.  I'd like to expose the services behind a VPC ELB to a few servers that will run the tasks when called.</p>
  
  <p>Is there some service that Amazon (AWS) offers that can run a reoccurring job (really call a webservice) at scheduled intervals?  I'd really like to be able to keep the cron functionality in terms of time/day specification, but farm out the HA of the driver (thing that calls endpoints at the right time) to AWS.</p>
  
  <p>I like how SQS offers web endpoint(s), but from what I can tell you cant schedule them.  SWF doesn't seem to be a good fit either.</p>