Building Microservices API in Go - Application Configuration

The video tutorial explains how to use environment variables for application configuration, emphasizing the importance of not hardcoding values. It covers defining and injecting variables in Linux, retrieving them using the OS package, and configuring database settings. A sanity check is implemented to ensure all necessary variables are defined, preventing application crashes. The tutorial also discusses exporting variables to simplify command line usage and concludes with a recap and preview of the next video on creating a POST API.

Why is it not advisable to use hardcoded configurations in applications?

• They increase the application's performance.

• They are more secure.

• They make the application less flexible for different environments.

• They are difficult to read.

What is the primary function of the OS package's getenv function?

• To delete environment variables.

• To list all environment variables.

• To set environment variables.

• To retrieve the value of environment variables.

What is the purpose of a sanity check in application configuration?

• To enhance the application's security.

• To reduce the application's memory usage.

• To improve the application's performance.

• To ensure all environment variables are defined before the application starts.

What is the benefit of using environment variables for database configuration?

• They increase the security of the database.

• They reduce the size of the database.

• They allow for dynamic configuration changes without altering the code.

• They make the database faster.

What happens if a required environment variable is not defined in the application?

• The application will run with default values.

• The application will crash.

• The application will ignore the missing variable.

• The application will prompt the user for input.

How can environment variables be managed more efficiently in Linux?

• By storing them in a database.

• By hardcoding them in the application.

• By writing them in a text file.

• By exporting them or using a shell script.

What should you avoid doing with shell scripts containing environment variables?

• Running them on a server.

• Checking them into version control.

• Using them for testing.

• Sharing them with team members.