How can I implement log rotation using the Ruby logging gem?

How can I implement log rotation using the Ruby logging gem?

You can implement log rotation in the Ruby logging gem by using the Logger::RollingFile class. This allows you to specify the maximum size of the log file and the number of backup files to keep.

Can you show me a code example for that?

Sure! Here's a simple example:

require 'logger'

logger = Logger.new('application.log', 'daily')
logger.info('This is an info message')

This will create a new log file each day.

What if I want to rotate logs based on file size instead?

You can specify the maximum file size in bytes. For example:

logger = Logger.new('application.log', 10, 102400) # 10 files, 100KB each

This will rotate the log file when it reaches 100KB.

Is there a way to customize the log format?

Yes, you can customize the log format by setting the formatter. For example:

logger.formatter = Logger::Formatter.new
logger.formatter = proc do |severity, datetime, progname, msg|
  "#{datetime}: #{msg}\n"
end