Ruby Reactor 0.4.0 introduces interrupts — the first native saga pause/resume mechanism in the Ruby ecosystem.
You've built a checkout flow. The user submits their order, you reserve inventory, charge their card, and generate a shipping label. Everything's a Sidekiq job. It works.
Then you get the requirement: "After payment, wait for the fraud detection webhook before shipping."
Suddenly your clean Sidekiq pipeline needs to stop, hold state for an indeterminate amount of time, and resume when Stripe calls back. Your options are:
Polling loop (wasteful, fragile)
