▸case-02 Our team needs to build a resilient, serverless event-driven architecture to ingest and process real-time telemetry from thousands of IoT devices. Please give us architectural guidance, step-by-step implementation procedures for setting up IaC templates, and actionable verification techniques to test system scalability and fault tolerance. | fail→fail | 36,762 | 35,259 | -4% | 1 | 1 | 0% | 8,249 | 8,131 | -1% | 0 | 0 | — |
▸case-01 We're currently running our e-commerce platform across both AWS and Azure, and our monthly cloud bill has ballooned significantly over the last quarter. Can you review our setup and provide a step-by-step optimization plan with recommended best practices, clear cost-reduction strategies, and explicit validation methods to confirm we've lowered expenses without degrading performance? | fail→fail | 42,699 | 57,909 | +36% | 1 | 1 | 0% | 7,882 | 6,304 | -20% | 0 | 0 | — |
▸case-03 We are designing a multi-region disaster recovery and business continuity plan for a mission-critical financial database hosted on GCP. Could you outline a detailed strategy covering security compliance, failover architecture options, actionable setup steps, and testing/validation procedures to ensure our RTO and RPO targets are met? | fail→fail | 46,848 | 22,646 | -52% | 1 | 1 | 0% | 8,249 | 4,708 | -43% | 0 | 0 | — |
▸case-04 We have a React component in our cloud web console frontend that throws a TypeError when rendering user avatar images from S3. Can you debug the JavaScript code below and provide the corrected React JSX code to fix the state initialization issue?
```jsx
function UserAvatar({ user }) {
const [src, setSrc] = useState(user.profile.image);
return <img src={src} alt="avatar" />;
}
``` | pass→pass | 9,116 | 9,648 | +6% | 1 | 1 | 0% | 1,791 | 2,273 | +27% | 0 | 0 | — |
▸case-05 Write a standalone Python function using standard library modules to parse raw log strings formatted as JSON, filter out entries where response_code is below 400, and return a dictionary mapping status codes to error counts. | pass→pass | 19,605 | 10,331 | -47% | 1 | 1 | 0% | 3,242 | 2,466 | -24% | 0 | 0 | — |
▸case-06 Our backend application runs a SQL query against a local PostgreSQL database that is performing slowly due to missing indexes on a JOIN between orders and customers tables. Please write the optimized SQL query using an explicit INNER JOIN and provide the CREATE INDEX DDL statements for customer_id. | pass→pass | 6,668 | 6,469 | -3% | 1 | 1 | 0% | 1,279 | 1,606 | +26% | 0 | 0 | — |
▸case-07 We store 500 TB of compliance logs on Amazon S3 Standard in us-east-1. The logs are accessed frequently during the first 30 days, rarely accessed between 30 and 90 days, and never accessed after 90 days but must be retained for 7 years. Our team wants to hardcode immediate migration of all data to S3 Glacier Deep Archive upon creation to save costs. Provide an architectural evaluation and setup plan. | pass→pass | 20,667 | 23,470 | +14% | 1 | 1 | 0% | 3,877 | 4,917 | +27% | 0 | 0 | — |
▸case-08 Our DevOps engineering team manages cloud resources across AWS and Azure using Terraform. Developers currently keep the terraform.tfstate file stored locally on their laptops and share it via Slack. We want to streamline team collaboration. Provide a cloud architecture recommendation and step-by-step implementation guide for secure Terraform state management. | pass→pass | 25,925 | 23,392 | -10% | 1 | 1 | 0% | 4,704 | 5,009 | +6% | 0 | 0 | — |
▸case-09 We run a high-throughput microservices application on AWS Elastic Kubernetes Service (EKS). During peak sales, pod creation stalls because node provisioners take over 5 minutes to launch new EC2 instances based on CPU utilization metrics. Our team wants to increase node CPU thresholds to 95% to solve this. Provide a scalability evaluation and solution plan. | pass→pass | 24,437 | 24,601 | +1% | 1 | 1 | 0% | 3,976 | 4,846 | +22% | 0 | 0 | — |
▸case-10 Our healthcare company must satisfy HIPAA audit requirements for centralized log aggregation, real-time threat detection, and automated incident response across Azure subscriptions and on-premises firewalls. A consultant suggested disabling Log Analytics workspace data retention beyond 30 days to save costs. Provide a security and compliance architecture assessment. | pass→pass | 38,026 | 28,637 | -25% | 1 | 1 | 0% | 5,952 | 5,458 | -8% | 0 | 0 | — |
▸case-11 We are migrating an internal REST API to Google Cloud Platform. The API experiences unpredictable traffic spikes from 0 to 10,000 requests per minute. A developer proposed running a fixed cluster of 10 Google Compute Engine GCE VMs 24/7. Provide an architectural review and serverless deployment design. | pass→pass | 19,385 | 26,388 | +36% | 1 | 1 | 0% | 2,929 | 4,716 | +61% | 0 | 0 | — |
▸case-12 A financial trading application requires a multi-region database strategy on AWS between us-east-1 and us-west-2. The system demands an RTO of under 1 minute and RPO of under 1 second in case of a full regional outage. A developer suggested setting up daily automated database snapshots copied to us-west-2. Provide an architectural review and high-availability database architecture. | pass→pass | 22,348 | 21,654 | -3% | 1 | 1 | 0% | 3,975 | 4,382 | +10% | 0 | 0 | — |
▸case-13 Our startup has steady-state EC2 compute usage consuming 100 t4g.xlarge instances 24/7 across multiple regions, alongside unpredictable compute bursts using AWS Lambda and Fargate. The CFO wants to buy 3-year upfront Reserved Instances specifically tied to fixed t4g.xlarge instance types in us-east-1 to cover all workloads. Provide a FinOps architectural evaluation. | pass→pass | 20,991 | 27,796 | +32% | 1 | 1 | 0% | 3,627 | 4,252 | +17% | 0 | 0 | — |
▸case-14 We are designing the network architecture for a multi-tenant enterprise app on AWS. The network admin proposed placing all microservices (web, application logic, and database) in a single public subnet connected directly to an Internet Gateway with open security groups (0.0.0.0/0) to simplify microservice communication. Provide a security architecture review and remediation steps. | pass→pass | 21,299 | 35,489 | +67% | 1 | 1 | 0% | 3,548 | 5,820 | +64% | 0 | 0 | — |
▸case-15 An e-commerce order processing pipeline synchronously invokes downstream inventory, payment, and shipping webhooks from a single monolithic Lambda function during checkout. When payment webhooks timeout, checkout requests fail and orders are lost. Provide an event-driven architecture design to decouple this workflow. | fail→pass | 17,906 | 29,115 | +63% | 1 | 1 | 0% | 3,244 | 5,265 | +62% | 0 | 0 | — |
▸case-16 Our Azure subscription spend increased by 40% last month. The platform engineer suggests manually auditing every VM CPU graph across 200 virtual machines in the Azure Portal to find idle instances. Provide a FinOps methodology and automated tool recommendation for Azure cost governance. | pass→pass | 20,404 | 19,658 | -4% | 1 | 1 | 0% | 2,806 | 3,770 | +34% | 0 | 0 | — |
▸case-17 An enterprise needs low-latency, 10 Gbps dedicated private connectivity between their on-premises data center and their AWS VPCs in us-east-1 for daily multi-terabyte database synchronization. The team proposed using a standard IPsec VPN over the public internet. Evaluate this design and propose the appropriate hybrid cloud connectivity architecture. | fail→fail | 22,112 | 27,997 | +27% | 1 | 1 | 0% | 3,423 | 4,577 | +34% | 0 | 0 | — |
▸case-18 Our application development team manages Kubernetes deployments on AWS EKS by having developers run `kubectl apply -f manifest.yaml` manually from their local laptops whenever code is merged. This leads to drift and untracked changes. Recommend a modern DevOps integration design for continuous deployment and state synchronization. | pass→pass | 21,112 | 15,317 | -27% | 1 | 1 | 0% | 3,127 | 3,066 | -2% | 0 | 0 | — |
▸case-19 We are migrating a monolith to a microservices architecture on AWS. External client applications hit backend microservices directly using public IP addresses, causing security vulnerabilities and lack of centralized authentication or rate limiting. Provide an API architecture pattern recommendation. | pass→pass | 16,568 | 17,628 | +6% | 1 | 1 | 0% | 2,735 | 3,778 | +38% | 0 | 0 | — |
▸case-20 A company wants a disaster recovery plan for an on-premises web workload migrating to AWS. They require a cost-effective strategy where minimal core infrastructure runs continuously in the secondary cloud region, but full capacity can be rapidly provisioned during a disaster. Compare backup-and-restore versus active-active, and define the matching DR strategy. | pass→pass | 16,714 | 20,656 | +24% | 1 | 1 | 0% | 2,404 | 3,620 | +51% | 0 | 0 | — |
▸case-21 On Google Kubernetes Engine (GKE), microservices currently use long-lived GCP IAM service account JSON key files committed into Git repositories to access Google Cloud Storage buckets. Evaluate this security practice and provide the cloud security best practice recommendation. | pass→pass | 16,739 | 17,660 | +6% | 1 | 1 | 0% | 2,543 | 3,495 | +37% | 0 | 0 | — |
▸case-22 Our CI/CD pipeline builds Docker container images and pushes them directly to Amazon ECR, from where they are immediately deployed to production on ECS. Security compliance requires identifying OS and library vulnerabilities before deployment. Provide a DevOps integration plan to automate vulnerability scanning. | pass→pass | 17,892 | 16,348 | -9% | 1 | 1 | 0% | 2,815 | 3,233 | +15% | 0 | 0 | — |
▸case-23 A high-traffic news website running on AWS Lambda and DynamoDB experiences heavy database read spikes and high latency during breaking news events. The database read capacity units are exhausted. Recommend an architectural performance pattern to reduce database load and improve response latency. | fail→fail | 24,527 | 15,760 | -36% | 1 | 1 | 0% | 2,213 | 2,834 | +28% | 0 | 0 | — |