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

```ts
type Concurrency = Int1To100 | PositiveInt;
```

Defined in: [packages/common/src/Task.ts:958](https://github.com/evoluhq/evolu/blob/e7144e2bbe9069362b62dec1b64a8aa922b8f1b0/packages/common/src/Task.ts#L958)

Maximum number of concurrent Tasks.

Default is 1 (sequential). Use 1-100 as a literal or [PositiveInt](https://evolu.dev/docs/api-reference/common/Type/variables/PositiveInt) for
larger values.

## See

- [concurrently](https://evolu.dev/docs/api-reference/common/Task/functions/concurrently)
- [createSemaphore](https://evolu.dev/docs/api-reference/common/Task/functions/createSemaphore)