File-based logging in Spring Boot - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is file-based logging in Spring Boot?

File-based logging means saving log messages to a file on your computer instead of just showing them on the screen. This helps keep a record of what happened in your app.

beginner

Which property in Spring Boot configures the log file name?

The property logging.file.name sets the name and location of the log file where messages will be saved.

beginner

How do you enable file-based logging in Spring Boot using application.properties?

Add logging.file.name=app.log to application.properties. This creates a file named app.log in your project folder to store logs.

beginner

What is the benefit of using file-based logging over console logging?

File-based logging keeps a permanent record of logs, which helps when you want to check past events or debug problems after the app has run.

intermediate

How can you control the log level for file-based logging in Spring Boot?

Use properties like logging.level.root=INFO or logging.level.com.example=DEBUG in application.properties to set how detailed the logs should be.

Which property sets the log file name in Spring Boot?

A log.file.path

B spring.log.file

C spring.logging.file

D logging.file.name

The correct property to set the log file name is logging.file.name.

What happens if you do not configure file-based logging in Spring Boot?

A Logs are saved to a default file

B Application will not start

C Logs only show on the console

D Logs are sent to a remote server

Without file-based logging configured, logs appear only on the console (screen).

How do you set the log level to DEBUG for a specific package in Spring Boot?

A logging.level.com.example=DEBUG

B logging.level.root=DEBUG

C logging.debug.level=com.example

D logging.level=DEBUG

Use logging.level.com.example=DEBUG to set DEBUG level for that package.

Why is file-based logging useful?

A It stores logs permanently for later review

B It makes the app run faster

C It hides logs from users

D It sends logs to email

File-based logging saves logs to a file so you can check them anytime later.

Which file typically contains the logging configuration in Spring Boot?

A application.yaml

B application.properties

C pom.xml

D logback.xml

Spring Boot commonly uses application.properties for logging settings.

Explain how to enable file-based logging in a Spring Boot application.

Think about which file holds configuration and what property controls the log file.

Describe the advantages of using file-based logging compared to console logging.

Consider why keeping logs in a file might be better than just seeing them on screen.