delayed_job allows you to use whatever data store you want for the job queue. Here are the current backends:

• "ActiveRecord":https://github.com/collectiveidea/delayed_job_active_record (DJ 3.0+)
• "DataMapper":https://github.com/collectiveidea/delayed_job_data_mapper
• "IronMQ":https://github.com/iron-io/delayed_job_ironmq/tree/v3
• "Mongoid":https://github.com/collectiveidea/delayed_job_mongoid
• "MongoMapper":https://github.com/thisduck/delayed_job_mongo_mapper (DJ 3.0+, MongoMapper 0.11.0+)
• "MongoMapper":https://github.com/smtlaissezfaire/delayed_job_mongo_mapper (DJ 4.1+, MongoMapper >= 0.13.1)
• "NoBrainer":https://github.com/eilers/delayed_job_nobrainer (ORM for RethinkDB)

It's really easy to make delayed_job work with your preferred data store. Just copy one of the existing ones, and implement Delayed::Backend::[YourBackendName]::Job.