[API reference](https://evolu.dev/docs/api-reference) › [@evolu/common](https://evolu.dev/docs/api-reference/common) › [Schedule](https://evolu.dev/docs/api-reference/common/Schedule) › linear

```ts
function linear(
  base: Duration,
): Schedule<
  number &
    Brand<"NonNaN"> &
    Brand<"Finite"> &
    Brand<"Int"> &
    Brand<"NonNegative"> &
    Brand<"LessThan281474976710655"> &
    Brand<"Millis">
>;
```

Defined in: [packages/common/src/Schedule.ts:341](https://github.com/evoluhq/evolu/blob/037c390af081e9944d616ff298a729515c5c5ab7/packages/common/src/Schedule.ts#L341)

Linear backoff schedule.

Delay increases linearly: `base * step`:

- Step 1: `base`
- Step 2: `base * 2`
- Step 3: `base * 3`
- ...

Never stops — combine with [take](https://evolu.dev/docs/api-reference/common/Schedule/functions/take) or [maxElapsed](https://evolu.dev/docs/api-reference/common/Schedule/functions/maxElapsed) to limit.

### Linear growth

```ts

// 100ms, 200ms, 300ms, 400ms, ...
const step = linear("100ms")(testCreateDeps());
assertOk(step(undefined), [100, 100]);
assertOk(step(undefined), [200, 200]);
```