Comprehensive RPC / gRPC Feature Requirement for Kubernetes in AWS?

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📌 Comprehensive RPC / gRPC Feature Breakdown

Feature	ClusterIP / NodePort	AWS NLB (L4 gRPC)	AWS ALB (L7 gRPC)	AWS API Gateway	Istio / Envoy / Traefik
1️⃣ Basic gRPC Communication	✅ Yes	✅ Yes	✅ Yes	✅ Yes	✅ Yes
2️⃣ Internal Service-to-Service gRPC	✅ Yes (ClusterIP)	❌ No	❌ No	❌ No	✅ Yes
3️⃣ External gRPC Exposure	❌ No	✅ Yes	✅ Yes	✅ Yes	✅ Yes
4️⃣ gRPC Load Balancing	✅ Yes (Round-robin at L4)	✅ Yes (L4)	✅ Yes (L7)	❌ No	✅ Yes (Advanced L7 Load Balancing)
5️⃣ Path-Based Routing (L7 gRPC Routing)	❌ No	❌ No	✅ Yes	✅ Yes	✅ Yes
6️⃣ Host-Based Routing (Virtual Hosts)	❌ No	❌ No	✅ Yes	✅ Yes	✅ Yes
7️⃣ Weighted Routing (Canary Releases, A/B Testing)	❌ No	❌ No	❌ No	❌ No	✅ Yes
8️⃣ Circuit Breaking (Failure Recovery)	❌ No	❌ No	❌ No	❌ No	✅ Yes
9️⃣ gRPC Retries & Timeouts	❌ No	❌ No	❌ No	❌ No	✅ Yes
🔟 Mutual TLS (mTLS) for Secure gRPC Calls	❌ No	❌ No	❌ No	❌ No	✅ Yes
11️⃣ API Authentication (JWT, OAuth, API Keys)	❌ No	❌ No	❌ No	✅ Yes	✅ Yes (With OPA, Keycloak)
12️⃣ Rate Limiting & Traffic Throttling	❌ No	❌ No	❌ No	✅ Yes	✅ Yes
13️⃣ Request/Response Transformation	❌ No	❌ No	❌ No	✅ Yes	✅ Yes
14️⃣ Header-Based Routing	❌ No	❌ No	✅ Yes	✅ Yes	✅ Yes
15️⃣ Ingress TLS Termination (HTTPS for gRPC Services)	❌ No	❌ No	✅ Yes	✅ Yes	✅ Yes
16️⃣ gRPC Observability (Logging, Monitoring, Tracing)	❌ No	❌ No	❌ No	❌ No	✅ Yes (With Prometheus, Jaeger, OpenTelemetry)
17️⃣ API Gateway (Public API Endpoint Management)	❌ No	❌ No	❌ No	✅ Yes	✅ Yes
18️⃣ WebSocket & Streaming Support	❌ No	✅ Yes	✅ Yes	✅ Yes	✅ Yes
19️⃣ Service Discovery (Dynamic Routing Between gRPC Services)	❌ No	❌ No	❌ No	❌ No	✅ Yes
20️⃣ Canary Deployments & Blue-Green Deployments	❌ No	❌ No	❌ No	❌ No	✅ Yes
21️⃣ Multi-Cluster gRPC Routing	❌ No	❌ No	❌ No	❌ No	✅ Yes
22️⃣ Observability Dashboard (Grafana, Jaeger, Prometheus)	❌ No	❌ No	❌ No	❌ No	✅ Yes
23️⃣ Integration with AWS Lambda & Other AWS Services	❌ No	❌ No	❌ No	✅ Yes	❌ No
24️⃣ Self-Healing & Auto-Failover	❌ No	❌ No	❌ No	❌ No	✅ Yes

Rajesh Kumar

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