Just learned about tagged logging in rails. Did you know you can tag a log by using

logger.tagged('Your Tag') { logger.info('Message') }

config/application.rb

You can also do it globally with

# config/application.rb
config.log_tags = [:method_on_request_object, lambda { |request| request.method.modifier_method }]

config/application.rb

Add client Device OS and OS Version information to logs (requires clients to send X-OS and X-OS-Version headers)

# config/application.rb
config.log_tags = [ :request_id, lambda { |request| "#{request.headers['HTTP_X_OS']} #{request.headers['HTTP_X_OS_VERSION']}" } ]

For production environments, specific settings can be added in the config environments production.rb file to optimize logging and performance.

1. Introduction to Log Tags

Log tags are a powerful feature in Rails that allows you to add custom information to your logs, making it easier to debug and understand your application’s behavior. By using log tags, you can categorize related log messages and make your logs more readable and useful. In this section, we will introduce the concept of log tags and explain how to use them in your Rails application.

2. Configuring Rails Components

Configuring Rails components is an essential part of setting up your application. In this section, we will discuss how to configure various Rails components, including the application, environment, and middleware. We will also cover how to use the config method to set up custom configurations for your application.

3. Customizing Log Tags

Customizing log tags allows you to add specific information to your logs that is relevant to your application. In this section, we will discuss how to customize log tags using the log_tags method. We will also cover how to use Procs and objects that respond to to_s to add dynamic information to your logs.

4. Log Tagging Examples

Log tagging is a versatile feature that can be used in various ways to improve your logs. In this section, we will provide examples of how to use log tags in different scenarios, such as logging requests to external APIs, background jobs, and user information. We will also cover how to use log tags to debug multi-tenant applications.

5. Best Practices for Log Tags

Using log tags effectively requires some best practices to ensure that your logs are readable and useful. In this section, we will discuss best practices for using log tags, including how to keep your logs concise, how to use meaningful tag names, and how to avoid over-tagging. We will also cover how to use log tags in conjunction with other logging tools and techniques to get the most out of your logs.