ECS Scaling at 20% CPU usage.

Author: connoromalleyatwork

dotcom-rendering/cdk/lib/__snapshots__/renderingStack.test.ts.snap

@@ -1693,8 +1693,8 @@ exports[`The RenderingCDKStack matches the snapshot for Tag Page Rendering CODE
       "Description": "S3 bucket to store your access logs",
       "Type": "AWS::SSM::Parameter::Value<String>",
     },
-    "DeployToolsAccountIdParameter": {
-      "Default": "/organisation/accounts/deployTools",
+    "ArtifactAccountIdParameter": {
+      "Default": "/organisation/accounts/artifacts",
       "Type": "AWS::SSM::Parameter::Value<String>",
     },
     "DistributionBucketName": {
@@ -2188,7 +2188,7 @@ exports[`The RenderingCDKStack matches the snapshot for Tag Page Rendering CODE
                 "",
                 [
                   {
-                    "Ref": "DeployToolsAccountIdParameter",
+                    "Ref": "ArtifactAccountIdParameter",
                   },
                   ".dkr.ecr.eu-west-1.",
                   {
@@ -2413,7 +2413,7 @@ exports[`The RenderingCDKStack matches the snapshot for Tag Page Rendering CODE
                     },
                     ":ecr:eu-west-1:",
                     {
-                      "Ref": "DeployToolsAccountIdParameter",
+                      "Ref": "ArtifactAccountIdParameter",
                     },
                     ":repository/guardian/dotcom-rendering",
                   ],
@@ -3637,6 +3637,24 @@ systemctl start tag-page-rendering",
       },
       "Type": "AWS::IAM::InstanceProfile",
     },
+    "tagpagerenderingCpuScaling1742C101": {
+      "Properties": {
+        "PolicyName": "TagPageRenderingCODEtagpagerenderingCpuScalingAFEBC723",
+        "PolicyType": "TargetTrackingScaling",
+        "ScalingTargetId": {
+          "Ref": "EcsServiceTaskCountTarget02FCCE22",
+        },
+        "TargetTrackingScalingPolicyConfiguration": {
+          "PredefinedMetricSpecification": {
+            "PredefinedMetricType": "ECSServiceAverageCPUUtilizationHighResolution",
+          },
+          "ScaleInCooldown": 60,
+          "ScaleOutCooldown": 60,
+          "TargetValue": 20,
+        },
+      },
+      "Type": "AWS::ApplicationAutoScaling::ScalingPolicy",
+    },
     "tagpagerenderingEcsClusterE7696595": {
       "Properties": {
         "ClusterSettings": [

dotcom-rendering/cdk/lib/renderingStack.ts

@@ -290,6 +290,7 @@ export class RenderingCDKStack extends CDKStack {
 							scaling: {
 								minimumTasks: 1,
 								maximumTasks: 2,
+								cpuAvgUtilisationTarget: 20,
 							},
 						},
 

pnpm-lock.yaml

@@ -12,7 +12,7 @@ blockExoticSubdeps: true
 catalog:
   '@aws-sdk/client-s3': 3.995.0
   '@aws-sdk/client-ssm': 3.995.0
-  '@guardian/cdk': 64.5.1
+  '@guardian/cdk': '0.0.0-canary-20260907130225'
   '@guardian/eslint-config': 14.0.1
   '@guardian/tsconfig': 1.0.1
   '@rollup/plugin-commonjs': 29.0.0