# Priority-Level Load Balancing
#
# Defines primary and failover endpoint tiers. Traffic uses the
# highest-priority (lowest-number) tier exclusively until its healthy
# capacity drops below the overprovisioning threshold, then spills to
# the next tier.
#
# overprovisioning_factor=140 means traffic spills when a tier's
# healthy% < 100/140 ≈ 71%.
#
# Usage:
#   cargo run -p praxis-proxy -- -c examples/configs/traffic-management/priority-lb.yaml
#   curl http://localhost:8080/

listeners:
  - name: default
    address: "127.0.0.1:8080"
    filter_chains:
      - main

filter_chains:
  - name: main
    filters:
      - filter: router
        routes:
          - path_prefix: "/"
            cluster: backend

      - filter: load_balancer
        clusters:
          - name: backend
            load_balancer_strategy:
              priority:
                inner_strategy: round_robin
                overprovisioning_factor: 140
            endpoints:
              - address: "127.0.0.1:3001"
                priority: 0
              - address: "127.0.0.1:3002"
                priority: 0
              - address: "127.0.0.1:3003"
                priority: 1
              - address: "127.0.0.1:3004"
                priority: 1

insecure_options:
  allow_private_endpoints: true # example proxies to local backends