How do I handle async actions in Redux Saga?

How do I handle async actions in Redux Saga?

You can handle async actions in Redux Saga using the takeEvery or takeLatest effects to listen for dispatched actions.

Can you give me an example of using takeLatest?

Sure! Here's a simple example:

import { takeLatest, call, put } from 'redux-saga/effects';

function* fetchData(action) {
    try {
        const data = yield call(api.fetchData, action.payload);
        yield put({ type: 'FETCH_SUCCESS', data });
    } catch (error) {
        yield put({ type: 'FETCH_FAILURE', error });
    }
}

function* watchFetchData() {
    yield takeLatest('FETCH_REQUEST', fetchData);
}

What is the difference between takeEvery and takeLatest?

takeEvery allows multiple instances of the saga to run concurrently for each dispatched action, while takeLatest only runs the latest instance, canceling any previous ones.

When should I use takeEvery instead of takeLatest?

Use takeEvery when you want to handle every action dispatched, such as logging or tracking events. Use takeLatest for actions where only the most recent result matters, like API calls.