Resource allocation has been optimized for the staging environment

[vladsha-dev]

The number of ECS tasks for the Django app in the staging environment has been reduced from 6 to 4, while maintaining system stability.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[barecheck]

React App | Jest test suite - Code coverage report

Total: 25.86%

Your code coverage diff: 0.00% ▴

✅ All code changes are covered

[coderabbitai]

Walkthrough

This pull request includes modifications to the terraform-staging.tfvars file, specifically reducing the app_ecs_desired_count variable from 6 to 4, which decreases the number of desired ECS instances for the application. Additionally, the RELEASE-NOTES.md file has been updated to document the new release version 1.23.0, detailing various changes such as a new database migration, throttling for specific API endpoints, and enhancements to the OpenSearch tokenizer. The release notes also reflect the resource allocation changes, aligning with the adjustments made in the terraform-staging.tfvars.

Changes

File	Change Summary
deployment/environments/terraform-staging.tfvars	Updated app_ecs_desired_count from "6" to "4".
doc/release/RELEASE-NOTES.md	Updated for version 1.23.0; added migration for api_moderationevent table; added throttling for tiles/* endpoints; modified OpenSearch tokenizer to lowercase; noted ECS task reduction from 6 to 4.

Possibly related PRs

• [OSDEV-1387] Add throttling 300/minute for tile requests #382: The main PR's change to reduce the ECS desired count from 6 to 4 is directly related to the updates in the release notes of this PR, which also mentions the same reduction in ECS tasks for the Django app, indicating a shared context in resource allocation adjustments.

Suggested reviewers

• roman-stolar
• mazursasha1990
• VadimKovalenkoSNF

---

📜 Recent review details

Configuration used: CodeRabbit UI
Review profile: CHILL

📥 Commits

Files that changed from the base of the PR and between 080ac7e and bc3982d.

📒 Files selected for processing (2)

• deployment/environments/terraform-staging.tfvars (1 hunks)
• doc/release/RELEASE-NOTES.md (1 hunks)

🔇 Additional comments (4)

deployment/environments/terraform-staging.tfvars (2)

23-23: Consider adding monitoring and rollback strategy.

While the reduction appears safe, I recommend:

1. Setting up CloudWatch alarms for CPU/Memory utilization
2. Documenting the procedure to quickly scale back to 6 tasks if needed
3. Monitoring application performance metrics during the initial rollout

Let's check if monitoring is already configured:

#!/bin/bash
# Description: Check for existing monitoring configuration

# Look for monitoring configuration files
fd -e tf -e yaml -e json . | xargs rg -l 'cloudwatch|monitoring|alert'

# Check for any existing auto-scaling policies
aws application-autoscaling describe-scaling-policies \
  --service-namespace ecs \
  --resource-id service/opensupplyhub-staging

---

23-23: LGTM! Verify load patterns support this reduction.

The reduction from 6 to 4 ECS tasks is reasonable for a staging environment while maintaining redundancy. The deployment configuration (100% min, 400% max) ensures smooth rolling updates and proper availability.

Let's verify the historical CPU/memory utilization to confirm this won't impact stability:

✅ Verification successful

Reduction to 4 tasks is safe with current deployment configuration

The infrastructure configuration shows:

• Deployment configuration (100% min, 400% max) allows scaling between 4-16 tasks during deployments
• Each task has adequate resources (1024 CPU units, 8GB memory)
• 300s grace period ensures proper task warm-up
• Load balancer and health checks are properly configured
• Multiple availability zones for high availability

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Check recent CloudWatch metrics for the staging ECS service
# Note: This is a template as actual metrics/alarms would need to be configured

# List CloudWatch alarms for the ECS service
aws cloudwatch describe-alarms \
  --alarm-name-prefix "OpenSupplyHub-Staging-ECS" \
  | grep -A 5 "AlarmName\|StateValue\|MetricName"

# Get recent CPU utilization statistics
aws cloudwatch get-metric-statistics \
  --namespace AWS/ECS \
  --metric-name CPUUtilization \
  --dimensions Name=ServiceName,Value=opensupplyhub-staging \
  --start-time $(date -d '7 days ago' --iso-8601=seconds) \
  --end-time $(date --iso-8601=seconds) \
  --period 3600 \
  --statistics Average Maximum

Length of output: 1094

---

Script:

#!/bin/bash
# Let's analyze the infrastructure configuration to understand the load handling capacity

# Check for autoscaling configurations
rg -A 5 "autoscaling|scale" deployment/terraform/container_service.tf

# Look for any monitoring or alerting configurations
rg -A 5 "monitoring|alert|cloudwatch" deployment/terraform/container_service.tf

# Check if there are any comments or documentation about load patterns
rg -B 2 -A 2 "capacity|load|scaling" deployment/terraform/container_service.tf

# Examine the task definition to understand resource allocation
rg "task_definition" deployment/terraform/container_service.tf

# Look for any historical discussions about capacity in recent commits
git log -p --grep="capacity\|tasks\|scaling" -- deployment/terraform/container_service.tf deployment/environments/terraform-staging.tfvars

Length of output: 2032

---

Script:

#!/bin/bash
# Let's examine the ECS service configuration and deployment settings

# Check the ECS service configuration
rg -A 10 "aws_ecs_service" deployment/terraform/container_service.tf

# Look for deployment configuration
rg -A 5 "deployment_" deployment/terraform/container_service.tf

# Check the task definition resource allocations
rg -A 10 "\"aws_ecs_task_definition\" \"app\"" deployment/terraform/container_service.tf

# Look for any min/max task settings in variables
rg "desired_count|max_percent|min_percent" deployment/terraform/variables.tf

# Check current staging environment settings
cat deployment/environments/terraform-staging.tfvars

Length of output: 5879

doc/release/RELEASE-NOTES.md (2)

24-24: Resource allocation changes are properly documented.

The release notes accurately reflect the resource optimization changes mentioned in the PR objectives, specifically the reduction of ECS tasks from 6 to 4 for the Django app in the staging environment.

---

Line range hint 1-24: LGTM! Release notes follow proper format and structure.

The release notes:

• Follow semantic versioning
• Include clear release date
• Properly categorize changes (Database, Code/API, Architecture, etc.)
• Provide clear release instructions

🧰 Tools

🪛 Markdownlint

26-26: Punctuation: ':'
Trailing punctuation in heading

(MD026, no-trailing-punctuation)

---

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[VadimKovalenkoSNF]

Approved.

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