gistfile1.rb

results = ActiveRecord::Base.connection.execute("select light_curve_id from classifications where zooniverse_user_id=#{user.id}")
results.each { |r| ids << r.first }
ids_to_process = ids.flatten.uniq

require 'enumerator'
unless ids.empty?
  ids.each_slice(1000) do |a|
    RedisConnect.redis.sadd("zooniverse_user_#{user.id}", *a)
  end
end