Specification v2.4 Architecture Tier 1 Cloud Native Standards

Cloud-Native Platform Engineering Standards

Enterprise reference architecture, service boundary contracts, and infrastructure provisioning guidelines for distributed microservices.

1. Core Tenets & System Topology

All microservices running within the cluster conform to uniform architectural constraints. Systems are decoupled by design, strictly stateless where possible, and communicate over verified cryptographic channels.

Immutable Infrastructure

Workloads are deployed as versioned OCI containers across multi-AZ node groups with declarative rollouts and automated health checks.

Unified Observability

Every ingress request injects a W3C Trace Context propagating downstream across gRPC and HTTP/2 RPC invocations.

Mutual TLS Everywhere

Inter-service traffic is authenticated and encrypted via dynamic X.509 certificates managed by Envoy sidecars.

Fail-Safe Circuit Breaking

Downstream service degradation triggers adaptive rate-limiting, deadline propagation, and circuit breaking.

2. Ingress & Envoy Transport Protocol

Edge routers terminate client TLS sessions using modern elliptic curve cipher suites (ECDHE-ECDSA / X25519) and forward normalized payloads to internal backend clusters.

Note: Internal RPC traffic enforces HTTP/2 with strict stream concurrency limits to prevent head-of-line blocking on long-lived connections.

Sample Ingress Configuration

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: platform-edge-ingress
  annotations:
    cert-manager.io/cluster-issuer: "letsencrypt-prod"
    nginx.ingress.kubernetes.io/backend-protocol: "HTTPS"
    nginx.ingress.kubernetes.io/proxy-connect-timeout: "15"
    nginx.ingress.kubernetes.io/proxy-read-timeout: "60"
spec:
  ingressClassName: nginx
  tls:
  - hosts:
    - docs.linkk.kdns.fr
    secretName: edge-tls-cert
  rules:
  - host: docs.linkk.kdns.fr
    http:
      paths:
      - path: /
        pathType: Prefix
        backend:
          service:
            name: docs-engine
            port:
              number: 8443

3. Observability & OpenTelemetry Standard

Application runtimes must initialize the OpenTelemetry SDK on startup to export metrics, structured logs, and distributed traces to the centralized platform collector.

otlp:
  endpoint: "telemetry.internal:4317"
  insecure: false
  compression: "gzip"
  metrics:
    interval: 15s
  sampler:
    type: "parentbased_traceidratio"
    ratio: 0.10

4. Security & Zero-Trust Governance

Every perimeter ingress point verifies identity assertions, authorization tokens, and cryptographically signed headers before allowing traversal into internal network segments.