A client runs an application on a background worker dyno. The application allows its users to request personalized information as a PDF. At peak usage, the app processes millions of requests at once.The resulting number of requests has caused a bottleneck that is impacting its performance.
Which two solutions can an Architect recommend to resolve the bottleneck and improve performance? (Choose two.)

A. Increase the number of workers to consume thejob faster.

B. Move the application to a Private Space.

C. Add Heroku Redis as a job queue.

D. Add a CDN add-on from the Elements marketplace.