[Answered ]-Search backend for Django App on Heroku

It’s not really practical to do this without a separate search server. Storage on Heroku’s dynos are not read-only but they are ephemeral and individual to a dyno, and any production application will have at least two dynos. You might be able to set something up to run on a dyno but it’s certain to be complex and fragile, whereas a third party service is turnkey. Most third party search add-ons scale with usage and many are free at the cheapest level, and if none of them fit the bill then you can always use non-Heroku search services, of which there are many.