Group backends by service role
Server groups are the operational idea behind a clean load-balancer backend: the instances in the group should do the same job, expose the same ports, and be safe to route traffic to interchangeably.Good backend-group habits
- Keep one clear purpose per backend group.
- Avoid mixing unrelated applications in the same traffic pool.
- Make sure each server in the group is bootstrapped and monitored the same way.
- Pair backend membership changes with deployment and rollback steps.