adding serverless arch and AKS cluster overview

k8s-cluster-overview.py

@@ -0,0 +1,40 @@
+from diagrams import Diagram, Edge, Cluster
+from diagrams.azure.network import ApplicationGateway, LoadBalancers
+from diagrams.azure.compute import AKS, KubernetesServices, ContainerRegistries
+from diagrams.azure.storage import StorageAccounts
+from diagrams.azure.database import DatabaseForPostgresqlServers
+from diagrams.azure.monitor import Monitor
+
+with Diagram("Kubernetes Cluster Overview (Azure)", filename="k8s-cluster-overview-azure", show=False, direction="LR"):
+    # External traffic
+    app_gw = ApplicationGateway("App Gateway / ALB")
+
+    # Kubernetes cluster (AKS)
+    with Cluster("AKS Cluster"):
+        aks = AKS("AKS")
+        pod1 = KubernetesServices("Pod: app-1")
+        pod2 = KubernetesServices("Pod: app-2")
+
+    # Supporting services
+    acr = ContainerRegistries("ACR")
+    blob = StorageAccounts("Blob Storage (PV)")
+    db = DatabaseForPostgresqlServers("Azure DB for PostgreSQL")
+    monitor = Monitor("Azure Monitor")
+
+    # Interactions
+    app_gw >> Edge(label="Ingress") >> aks
+    aks >> Edge(label="Schedules/Routes") >> pod1
+    aks >> Edge(label="Schedules/Routes") >> pod2
+
+    pod1 >> Edge(label="Store PVC") >> blob
+    pod2 >> Edge(label="Store PVC") >> blob
+
+    pod1 >> Edge(label="Query") >> db
+    pod2 >> Edge(label="Query") >> db
+
+    acr >> Edge(label="Images") >> aks
+
+    # Monitoring
+    aks >> monitor
+    db >> monitor
+    blob >> monitor

serverless-architecture.py

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+from diagrams import Diagram, Cluster
+from diagrams.aws.compute import Lambda
+from diagrams.aws.database import Dynamodb
+from diagrams.aws.storage import S3
+from diagrams.aws.network import APIGateway
+from diagrams.aws.security import Cognito
+from diagrams.aws.integration import SNS, SQS
+from diagrams.aws.management import Cloudwatch
+
+
+with Diagram("Serverless Architecture", show=True, filename="serverless-architecture", outformat="png"):
+    # Public API + Auth
+    api_gateway = APIGateway("API Gateway")
+    user_auth = Cognito("Cognito User Pool")
+
+    # Core compute and storage
+    lambda_function = Lambda("API Lambda")
+    dynamodb = Dynamodb("DynamoDB")
+    s3 = S3("S3")
+
+    # Async messaging and worker
+    sns = SNS("SNS Topic")
+    sqs = SQS("SQS Queue")
+    worker = Lambda("Worker Lambda")
+
+    # Monitoring
+    cw = Cloudwatch("CloudWatch")
+
+    # Group the serverless backend for clarity
+    with Cluster("Serverless Backend"):
+        lambda_function >> dynamodb
+        lambda_function >> s3
+        lambda_function >> sns
+
+    # Async delivery to worker via SQS subscription
+    sns >> sqs
+    sqs >> worker
+
+    # API and auth flow
+    api_gateway >> user_auth
+    api_gateway >> lambda_function
+
+    # Monitoring connections (informational)
+    lambda_function >> cw
+    worker >> cw
+    dynamodb >> cw