Stop logging Assets and other particular messages. A great example: An Ajax call checking a Queue every nSeconds and filling up the log with simple GET requests. Add to initializers

logging_handler.rb

Rails.application.assets.logger = Logger.new('/dev/null')
Rails::Rack::Logger.class_eval do 

  alias_method :logger_call, :call

  def call(env)
    previous_level = Rails.logger.level
    #TODO:  
    #Move paths to yaml file as it grows
    paths = %w(/assets/ /my_queues/ /their_queues/)
    use_error_logger = false
    paths.each do |x|
      use_error_logger = true if env['PATH_INFO'].include?(x)
    end
    Rails.logger.level = Logger::ERROR if use_error_logger
    logger_call env
    ensure
      Rails.logger.level = previous_level
  end

end