Here is what I'm trying.
I want to setup multiple servers in front of a single dedicated server. Setting up those multiple servers isn't a problem. However I need to make sure that people can use the service with 1 A record.
Lets say example.com points to 1.2.3.4, the server 1.2.3.4 point to a dedicated server. Lets say 11.22.33.44. Now I add another front end server with the ip 5.6.7.8. This means that 1.2.3.4 and 5.6.7.8 both redirect to the dedicated 11.22.33.44. Now I need to make sure that whenever 1.2.3.4 isn't available users get redirect to 5.6.7.8.
I'm not sure if it is possible, I don't like to change DNS everytime.