Interestingly - A lot of the advice here (such as having an "Active" module and a "Standby" module with a heartbeat between them, Watchdogs, reducing single poi

Interestingly - A lot of the advice here (such as having an "Active" module and a "Standby" module with a heartbeat between them, Watchdogs, reducing single points of failure, error detection codes) is applicable to a lot of other High Availability scenarios. Think load balancers, databases, routers and high scalability networking devices for example.