---
title: "Deadline"
description: "one unit waiting on a window's end, judged again at that moment by the one evaluator, so a condition made true by nothing arriving still fires"
section: concepts
address: /concepts/deadline
contract: 0476e35e6e275db5
---

# Deadline

one unit waiting on a window's end, judged again at that moment by the one evaluator, so a condition made true by nothing arriving still fires

[figure: Deadline is a work at follows scope. The drawing shows its fields and the objects that they point at.]

| property | value |
|---|---|
| kind | work |
| scope | follows |
| key | the predicate, the unit and the time it falls due |
| store | postgres |
| family | rules_engine |



## Fields


| field | type | required | note |
|---|---|---|---|
| `predicate` | `hash` | yes |  |
| `unit` | `id` | yes | the unit that opened the window |
| `due` | `time` | yes |  |
| `monitor` | `id` | no |  |



## Routes that use it
No route takes or returns Deadline directly. The record holds it, and the objects that point at it reach it.