Stop logging of need not messages to log with an INFO level in production and staging enviroments, example:

[2018-05-06 14:54:05] INFO Started GET "/" for 127.0.0.1 at 2018-05-06 14:54:05 +0300 [2018-05-06 14:54:05] INFO Processing by HomeController#index as HTML [2018-05-06 14:54:05] INFO Parameters: {"url_prefix"=>""} [2018-05-06 14:54:05] INFO Rendered home/index.html.slim (9.9ms)
[2018-05-06 14:54:06] INFO Completed 200 OK in 1068ms (Views: 953.2ms | ActiveRecord: 4.6ms)

Add to config/initializers/quiet_rails_logger.rb:

QuietRailsLogger.configure do |config|
  config.environments = %w[production staging]
end

Add this line to your application's Gemfile:

gem 'quiet_rails_logger'

And then execute:

$ bundle

The gem is available as open source under the terms of the MIT License.