# Flash sale

> A flash sale: 20× the usual checkouts for a few minutes.

## What happens

A flash sale: 20× the usual checkouts for a few minutes.

## How to prevent it

A Queue for the checkout work, an Autoscaler, and load shedding.

The postmortem opens the first of these that you do not own yet:

- [Autoscaling](https://wiki.playquorum.dev/research/autoscaling.md)
- [Priority load shedding](https://wiki.playquorum.dev/research/load-shedding.md)

## Components it hits

[Payment Provider](https://wiki.playquorum.dev/components/psp.md)

## Facts

SEV2 Flash sale
- **First Era:** [Series A](https://wiki.playquorum.dev/eras/series-a.md)
- **Starts at:** SEV2
- **Escalates to:** SEV1
- **Lasts:** 1.5 min

## See also

- [Incidents](https://wiki.playquorum.dev/incidents.md)

Source: https://wiki.playquorum.dev/incidents/flash-sale