# Provider 使用 JSON POST；供应商重试由独立 Fetch 策略控制。
version: 1
security: {requireProtectionOnPublicListen: true}
gateway: {enabled: true, listen: '127.0.0.1:8080', auth: {mode: none}}
routing:
  - name: gateway
    enabled: true
    purpose: gateway
    match: {hostRegex: '.*'}
    upstreams: [provider-a]
    strategy: {type: leastConnections}
    onUnavailable: {action: reject}
upstreams:
  provider-a:
    enabled: true
    exposure: [gateway]
    provider: {billingMode: fetch, protocols: [http]}
    api:
      url: https://provider-a.example/v1/orders
      method: POST
      auth: {type: apiKey, location: header, name: X-Provider-Key, value: "${PROVIDER_API_KEY}"}
      headers: {Content-Type: application/json}
      body:
        type: json
        value: {count: '100', protocol: http}
      template: '{{.}}'
    proxyAuth: {type: response}
    pool: {maxSize: 1000}
    capacity: {maxConcurrencyPerProxy: 10}
    refill: {reconcileInterval: 1s, minimumAvailableSlots: 25, targetAvailableSlots: 50}
    lifecycle: {ttl: 3m, allocationSafetyMargin: 20s}
    fetch:
      estimatedIPsPerCall: 10
      requestInterval: 2s
      timeout: 5s
      maxAttempts: 3
      maxInFlight: 1
      maxTotal: 100000
      maxResponseBytes: 1048576
      templateTimeout: 100ms
      retry: {initial: 1s, max: 30s, jitter: 20}
    check: {interval: 30s, jitter: 20, maxInFlight: 100, timeout: 2s, maxAttempts: 2, maxConsecutiveFailures: 3}