Consider using Django Messages

[JanBednarik]

App does not use database and is stateless except token in cookie. Sometimes we want to give user a message like "Report was published." after redirect.

Now it's done by params in URLs, which may be copied (will be copied) and shared with URL. Maybe better option is to use Messages. They use Session backend, which can work without database, in memory, file or cookie. Maybe Sqlite DB is also option to consider.