Alibaba CSA-C01 case studies
Alibaba CSA-C01 · Put your knowledge to work in context.
The Alibaba Cloud Certified Associate (ACA) Cloud Computing credential is an entry-level certification for people who want to demonstrate foundational fluency with Alibaba Cloud services and cloud concepts. It suits developers, system administrators, pre-sales and solutions staff, and IT generalists who are starting to build or operate workloads on Alibaba Cloud, as well as students preparing for cloud-focused roles. The Alibaba CSA-C01 case studies are 5 cases and about 2,527 words.
1Interrupted Image Export on Spot ECS
A batch team runs a nightly image-rendering job on 20 ECS instances launched with the Spot (preemptible) billing method in a single zone. Each instance processes a shard of 500 files and writes partial output to the instance's local ephemeral disk before uploading a final tar to OSS at the end of the shard.
563 words, about 3 min2Cross-VPC Database Access for a Partner
A company hosts its order service in VPC-A (10.0.0.0/16) and its analytics database in VPC-B (10.1.0.0/16), both in the same region and account. A partner needs read access to a curated analytics view from their own VPC-C (10.2.0.0/16) in a different account.
531 words, about 3 min3RAM Policy That Grants Too Much
An engineer needs a CI/CD pipeline to upload build artifacts to one OSS bucket and read one secret from a secrets store. Under time pressure, the engineer attached the built-in AliyunOSSFullAccess policy plus a broad read policy to the pipeline's RAM user, and stored the AccessKey in a plaintext CI variable.
471 words, about 2 min4Latency Spike After Adding a Second Region
A media site serves user-generated images from a single OSS bucket in the Singapore region. Users are concentrated in Singapore and in Frankfurt.
488 words, about 2 min5Autoscaling That Oscillates Under Load
A web application runs on an SLB in front of an ECS scaling group. The scaling group uses a target-tracking rule on average CPU at 60%, with a 60-second cooldown and a minimum of 2 and maximum of 30 instances.
474 words, about 2 min