Ruby: benchmark/analyze memory for CSV generation with a big collection of ActiveRecord objects

ruby_topics = [
  'Benchmark memory when running a big query or a complex process with Ruby(Especially if you are using Heroku)',
  'See how to set up a project to use a database and ActiveRecord in plain Ruby',
  'Export a giant CSV file keeping the memory usage down'
]

my_interest = current_user.i_would_like_to_read_about

if ruby_topics.include?(my_interest)
  'Please take a look at this repository https://github.com/heridev/memory_activerecord_into_csv_benchmark'
end