Developing Applications Using Cisco Core Platforms and APIs (DEVCOR) — Question 54

While developing an application following the 12-factor app methodology, which approach should be used in the application for logging?

Answer options

• A. Write a log to a file in the application directory.
• B. Write a log to a file in /var/log.
• C. Write the logs buffered to stdout.
• D. Write the logs unbuffered to stdout.

Correct answer: D

Explanation

The correct answer is D because the 12-factor app methodology emphasizes that logs should be treated as event streams and sent to stdout without buffering, which allows for real-time processing. Options A and B suggest writing logs to files, which can complicate log management and does not adhere to the 12-factor principles. Option C, while better than A and B, still involves buffered logging, which can delay log visibility.