Create associations that combine multiple Active Record associations using a SQL UNION under the hood, with full support for joins, preloading and eager loading on the union association, as well as through-union associations.

Wrap an Active Record transaction or query in a local statement timeout.

dual_writes allows ActiveRecord to write to multiple databases asynchronously or synchronously.

Decorate nil Active Record associations with a null object in Rails.

Process multiple enqueued Sidekiq jobs in a single bulk job execution. Useful for migrating jobs with high write load to utilize bulk inserts.

read_your_own_writes allows you to implement non-session-based "read-your-own-writes" database selection for Active Record.

Query assertions and SQL matchers for RSpec.

Assert state changes through multiple values for an object, enabling you to test complex state transitions in sequence with RSpec.