Cloud+ case studies
Cloud+ · Put your knowledge to work in context.
CompTIA Cloud+ is a certification that validates skills in cloud infrastructure for professionals working in multi-cloud environments. Exam version V4 (series code CV0-004) launched on September 24, 2024, and it is aimed at systems administrators and cloud engineers with roughly two to three years of hands-on experience - people who already work with cloud platforms and want a credential covering operations end to end rather than a single vendor's tooling. The Cloud+ case studies are 5 cases and about 5,216 words.
1The 30-Minute RTO That the Design Cannot Deliver
Northwind Analytics runs a SaaS reporting product from a single region. The web tier is stateless across three availability zones behind a load balancer, but the application tier keeps user sessions in local memory and depends on load-balancer sticky sessions.
1,041 words, about 5 min2Blue/Green With a Shared Database and a Spent Error Budget
A team ships a Java monolith as a container image to Kubernetes, releasing every Thursday. Release R-42 adds a NOT NULL column tenant id to the 400-million-row orders table and drops the legacy region code column in the same migration script.
985 words, about 5 min3The 09:00 Spike That Autoscaling Never Catches
An image-processing API runs on an autoscaling group of 12 c2-large instances behind a load balancer, using target-tracking on average CPU with a 60 percent target. Every weekday at 09:00 a marketing batch uploads 40,000 images over about 10 minutes.
1,019 words, about 5 min4Audit Findings Where the Severity Ranking Is Backwards
A security review of a 30-engineer company produces four findings. (1) Every application instance carries the same IAM role with s3: on all buckets, including the bucket holding nightly database dumps.
1,106 words, about 6 min5Connection Pool Exhaustion That Adding Instances Makes Worse
Users report intermittent HTTP 502 and 504 responses from a public web API - roughly 1 in 200 requests, almost always between 12:00 and 13:00 UTC. The load balancer shows all targets healthy.
1,065 words, about 5 min