> For the complete documentation index, see [llms.txt](https://ru.redux-saga.js.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ru.redux-saga.js.org/soderzhanie/advanced/runningtasksinparallel.md).

# 3.3 Выполнение задач параллельно

The `yield` statement is great for representing asynchronous control flow in a linear style, but we also need to do things in parallel. We can't write:

```javascript
// wrong, effects will be executed in sequence
const users = yield call(fetch, '/users')
const repos = yield call(fetch, '/repos')
```

Because the 2nd effect will not get executed until the first call resolves. Instead we have to write:

```javascript
import { all, call } from 'redux-saga/effects'

// correct, effects will get executed in parallel
const [users, repos] = yield all([
  call(fetch, '/users'),
  call(fetch, '/repos')
])
```

When we yield an array of effects, the generator is blocked until all the effects are resolved or as soon as one is rejected (just like how `Promise.all` behaves).