Catch unsafe PostgreSQL migrations in development and run them easier in production (code helpers for table/column renaming, changing column type, adding columns with default, background migrations, etc).
Quickly get a count estimation for large tables (>99% of accuracy for PostgreSQL).
Make your long-running sidekiq jobs interruptible and resumable.
A faster alternative to the custom use of `in_batches` with `pluck`
Detect unnecessary selected database columns
Regression testing for data