Allow skipping cached queries.

[tinynumbers]

I've added a new :ignore_cached_queries configuration option to prevent output of the backtrace for cached queries.

This is useful if you are only interested in tracking down the origin of database queries that actually hit the database.

Set this option to true...

ActiveRecordQueryTrace.enabled = true
ActiveRecordQueryTrace.ignore_cached_queries = true

...and backtrace output will not occur for any SQL query that uses cached results (i.e. those SQL queries that would show up in the log prefixed with CACHE).

I'm using this in conjunction with a custom logger in development that also skips logging of cached queries.. In development.rb,

  # Don't log cached queries
  class LogWithoutCachedQueries < ::Logger
    def debug(message, *args, &block)
      unless message.include? 'CACHE ('
        super
      end
    end
  end

  # Default is 1GB!  Let's limit to 3 5MB files
  max_log_files = 3
  max_log_size = 5 * 1024 * 1024
  log_file = Rails.root.join('log', Rails.env + '.log')

  config.logger = LogWithoutCachedQueries.new(log_file, max_log_files, max_log_size)

[ruckus]

Awesome, thank you! Great addition, should clean up lots of clutter.

[tinynumbers]

Great - thanks for the quick merge! Would it be possible to roll up as a new version 1.4 release of the gem?

[ruckus]

Absolutely, 1.4 pushed to RubyGems.

https://rubygems.org/gems/active_record_query_trace