Parallel Steps

Upstash Workflow supports executing multiple steps in parallel.

Since each step returns a Promise, you can execute multiple steps concurrently by using Promise.all(). This behavior works out of the box. No additional configuration is required.

import { serve } from "@upstash/workflow/nextjs";import { checkInventory, brewCoffee, printReceipt } from "@/utils";export const { POST } = serve(async (context) => {  // 👇 Execute steps in parallel  const [coffeeBeansAvailable, cupsAvailable, milkAvailable] =    await Promise.all([      context.run("check-coffee-beans", () => checkInventory("coffee-beans")),      context.run("check-cups", () => checkInventory("cups")),      context.run("check-milk", () => checkInventory("milk")),    ]);});

The results of the parallel steps are available as usual once awaited.

The dashboard visualizes parallel execution as shown below:

You can also await different step types together. For example, you can run a context.call() and a context.run() in parallel.