Are there alternative implementations for EJB timer persistence in EAP 7 especially if running in OpenShift?

Issue

• We need to have an EJB timer persistence for EAP running on OpenShift, where EAP is running in clustered mode. Since the application does not need a database and the avoid to having to operate one, it would be interesting to either
  • kupernetes config map
  • already used AWS dynamo DB
• We want to have clustered EJB timers but the only possibility is a database as persistence within the documentation. Is it possible to use a different persistence?
• Is it possible to implement a custom persistence for EJB timers?