Remote server distance

Question

There is a value 'distance' in the remote server configuration. By default, it is set to 10.
When does it make sense to adjust this value?

Answer

If at all, it only makes sense to adjust the value for complex remote scenarios.

For example:
- Master Server M
- Remote Server R1
- Remote Server R2
- Remote Server RR

M <- R1
M <- R2
R1 <- RR and additionally
R2 <- RR

Now, you want RR to go primarily through R1 because R1 has a better connection to M.
Then you can say that the distance M <- R1 is 10 and M <- R2 is 20 and R1 <- RR 10 and R2 <- RR 10 each.
Then RR looks for the shortest way to M - therefore the parameter is also called distance.
The value itself does not matter. For the distance, it is simply added.