In the last couple weeks, every couple days I get an exception from a query failing with a complaint about a deadlock:

An ActiveRecord::Deadlocked occurred in comments#upvote:

  Mysql2::Error: Deadlock found when trying to get lock; try restarting transaction: UPDATE `stories` SET `hotness` = -19572.7194911 WHERE `stories`.`id` = 51235
  app/models/story.rb:608:in `recalculate_hotness!

very great work, but please help with a brief install guide if possible at this stage, global steps and link will be good enough. thank you.