Alibaba Cloud Certified Associate (ACA) Practice Test

The choice of copying files to an OSS (Object Storage Service) bucket with a lifecycle policy configured to delete them automatically is an efficient method for handling temporary files in a Function Compute function context. This approach combines both storage best practices and resource management.

By placing temporary files into an OSS bucket, developers leverage Alibaba Cloud's scalable and durable storage solution, which is designed for storing large amounts of data efficiently. Implementing a lifecycle policy within OSS allows for automated management of these files, ensuring that temporary files do not persist longer than necessary. This automation not only reduces the operational burden on developers but also minimizes potential storage costs, as files are automatically removed after a defined period.

This method is particularly useful because it reflects a balance between performance—using a managed cloud storage service—and responsibility—ensuring that unused or unnecessary data is handled appropriately without requiring manual intervention for deletion after the function execution.

In contrast, relying solely on local temporary storage might lead to limited capacity and potential issues with file persistence, while using cloud storage without a deletion policy can result in accumulating unnecessary storage costs over time. Similarly, while deleting files immediately after execution can also seem practical, it may not be as efficient for scenarios involving multiple functions or complex processes, as it requires managing file deletion manually