HCIA-Cloud Service case studies

HCIA-Cloud Service · Put your knowledge to work in context.

The HCIA-Cloud Service credential (also written out as Huawei Certified ICT Associate – Cloud Service) is an associate-level certification track in the Huawei certification family, which appears on Huawei's training and certification pages alongside Free ICT Courses, ICT Academy and Huawei Certification. This independent study page is written for candidates who want a structured map of the exam's published domain structure before they begin preparing. The HCIA-Cloud Service case studies are 5 cases and about 4,105 words.

Flash Sale on a Fixed Auto Scaling Group: Why the Policy Never Fires in Time

A retail company serves its product-listing tier from eight ECS instances of flavor c6.large.2 (2 vCPU, 4 GB) in one Auto Scaling group behind a dedicated ELB. Normal traffic keeps average CPU near 40% and memory near 55%.

812 words, about 4 min 2

Animation Studio: Choosing Between SFS Turbo, EVS and OBS for a 400 TB Archive Plus a 20 TB Render Working Set

An animation studio keeps 400 TB of source footage and rendered frames in the cloud, growing about 30 TB per month. Only around 5% of files older than 30 days are read again, but when they are, artists need them within minutes for a re-render.

784 words, about 4 min 3

Overlapping CIDRs Block VPC Peering Between Two Business Units

Two business units must exchange private traffic inside one region. Unit A's VPC uses 10.0.0.0/16 with subnets 10.0.1.0/24 (web) and 10.0.2.0/24 (app).

782 words, about 4 min 4

Leaked Access Key, 2.1 TB OBS Egress: Containment and Redesign

At 02:40 on a Saturday, a Cloud Eye alarm reports a 2.1 TB egress spike on an OBS bucket that stores customer invoices. Logs show about 400,000 GET requests from one foreign IP range in 25 minutes.

831 words, about 4 min 5

Single-Region SaaS to a DR Region: RTO 30 Minutes Against 40 TB of EVS

A SaaS vendor runs entirely in one region (two AZs): 60 ECS instances, 40 TB of EVS, an RDS for MySQL primary with a standby in the second AZ, 300 TB of OBS and a dedicated ELB. Users reach the service through a third-party DNS provider with a 60-second TTL.

896 words, about 4 min