Slow Start

Ramp newly added and recovered endpoints up to their configured weight

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Category: Practical
Task: Ramp newly added and recovered endpoints up to their configured weight

Prerequisites: The product runtime and any backend services referenced by this configuration.

This configuration comes from the selected release. The example has not been run here; external services are not bundled.

Download the source file.

# Slow Start
#
# Ramp newly added and recovered endpoints up to their
# configured weight. Endpoints listed here are the baseline
# and keep their configured weight. An endpoint added in a
# later reload starts at zero and climbs over window_ms.
#
# ⚠️  EXPERIMENTAL: This example uses the `slow-start` experimental feature.
# Not recommended for production use. Build with --features slow-start.
#
# Usage:
#   cargo run -p praxis-proxy --features slow-start -- -c examples/configs/traffic-management/slow-start.yaml
#   for i in $(seq 1 4); do curl -s http://localhost:8080/; echo; done

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: round_robin
            slow_start:
              window_ms: 30000
              aggression: 1.0
            endpoints:
              - "127.0.0.1:3001"
              - "127.0.0.1:3002"

insecure_options:
  allow_private_endpoints: true # example proxies to local backends