Sidekiq background job rollback when fail

Question

I want to know if a sidekiq background job will rollback its database if the job fail to finish? ie machine died or something like that.

I'm using rails 4.2.1, sidekiq 4.0.1

Answer 1

Sidekiq doesn't really handle transactions, but Rails does. So if you have several statements you should wrap them in a transaction ie:

ActiveRecord::Base.transaction do
  User.update(amount: 100)
  Bank.update(amount: 0)
end

Then, if something goes wrong, these changes will be rolled back.