--- description: Workflows is now GA - ship Workflows that you can rely on in production. title: Workflows is now Generally Available image: https://developers.cloudflare.com/changelog/post/2025-04-07-workflows-ga/og.png?v=bf84f5e520244a95 --- [Skip to content](#main-content) [View RSS feeds](https://developers.cloudflare.com/fundamentals/new-features/available-rss-feeds/) [ Subscribe to RSS](https://developers.cloudflare.com/changelog/rss/index.xml) [Back to all posts](https://developers.cloudflare.com/changelog) April 7, 2025 ## Workflows is now Generally Available [Workflows](https://developers.cloudflare.com/workflows/) [Workers](https://developers.cloudflare.com/workers/) Copy as Markdown| [View as Markdown](https://developers.cloudflare.com/changelog/post/2025-04-07-workflows-ga/index.md)| [Agent setup](https://developers.cloudflare.com/agent-setup/) [Workflows](https://developers.cloudflare.com/workflows/) is now *Generally Available* (or "GA"): in short, it's ready for production workloads. Alongside marking Workflows as GA, we've introduced a number of changes during the beta period, including: - A new `waitForEvent` API that allows a Workflow to wait for an event to occur before continuing execution. - Increased concurrency: you can [run up to 4,500 Workflow instances](https://developers.cloudflare.com/changelog/post/2025-02-25-workflows-concurrency-increased/) concurrently — and this will continue to grow. - Improved observability, including new CPU time metrics that allow you to better understand which Workflow instances are consuming the most resources and/or contributing to your bill. - Support for `vitest` for testing Workflows locally and in CI/CD pipelines. Workflows also supports the new [increased CPU limits](https://developers.cloudflare.com/changelog/post/2025-03-25-higher-cpu-limits/) that apply to Workers, allowing you to run more CPU-intensive tasks (up to 5 minutes of CPU time per instance), not including the time spent waiting on network calls, AI models, or other I/O bound tasks. #### Human-in-the-loop The new `step.waitForEvent` API allows a Workflow instance to wait on events and data, enabling human-in-the-the-loop interactions, such as approving or rejecting a request, directly handling webhooks from other systems, or pushing event data to a Workflow while it's running. Because Workflows are just code, you can conditionally execute code based on the result of a `waitForEvent` call, and/or call `waitForEvent` multiple times in a single Workflow based on what the Workflow needs. For example, if you wanted to implement a human-in-the-loop approval process, you could use `waitForEvent` to wait for a user to approve or reject a request, and then conditionally execute code based on the result. ```js import { WorkflowEntrypoint, WorkflowStep, WorkflowEvent, } from "cloudflare:workers"; export class MyWorkflow extends WorkflowEntrypoint { async run(event, step) { // Other steps in your Workflow let stripeEvent = await step.waitForEvent( "receive invoice paid webhook from Stripe", { type: "stripe-webhook", timeout: "1 hour" }, ); // Rest of your Workflow } } ``` ```ts import { WorkflowEntrypoint, WorkflowStep, WorkflowEvent } from "cloudflare:workers"; export class MyWorkflow extends WorkflowEntrypoint { async run(event: WorkflowEvent, step: WorkflowStep) { // Other steps in your Workflow let stripeEvent = await step.waitForEvent("receive invoice paid webhook from Stripe", { type: "stripe-webhook", timeout: "1 hour" }) // Rest of your Workflow } } ``` You can then send a Workflow an event from an external service via HTTP or from within a Worker using the [Workers API](https://developers.cloudflare.com/workflows/build/workers-api/) for Workflows: ```js export default { async fetch(req, env) { const instanceId = new URL(req.url).searchParams.get("instanceId"); const webhookPayload = await req.json(); let instance = await env.MY_WORKFLOW.get(instanceId); // Send our event, with `type` matching the event type defined in // our step.waitForEvent call await instance.sendEvent({ type: "stripe-webhook", payload: webhookPayload, }); return Response.json({ status: await instance.status(), }); }, }; ``` ```ts export default { async fetch(req: Request, env: Env) { const instanceId = new URL(req.url).searchParams.get("instanceId") const webhookPayload = await req.json() let instance = await env.MY_WORKFLOW.get(instanceId); // Send our event, with `type` matching the event type defined in // our step.waitForEvent call await instance.sendEvent({type: "stripe-webhook", payload: webhookPayload}) return Response.json({ status: await instance.status(), }); }, }; ``` Read the [GA announcement blog ↗︎](https://blog.cloudflare.com/workflows-is-now-generally-available/) to learn more about what landed as part of the Workflows GA. ```json {"@context":"https://schema.org","@type":"BlogPosting","@id":"https://developers.cloudflare.com/changelog/post/2025-04-07-workflows-ga/#page","headline":"Workflows is now Generally Available","description":"Workflows is now GA - ship Workflows that you can rely on in production.","url":"https://developers.cloudflare.com/changelog/post/2025-04-07-workflows-ga/","inLanguage":"en","image":"https://developers.cloudflare.com/changelog/post/2025-04-07-workflows-ga/og.png?v=bf84f5e520244a95","dateModified":"2025-04-07","datePublished":"2025-04-07","publisher":{"@type":"Organization","name":"Cloudflare","description":"One platform for your apps, agents, and workforce. Build, secure, and scale without managing infrastructure","url":"https://www.cloudflare.com/","sameAs":["https://github.com/cloudflare","https://www.linkedin.com/company/cloudflare","https://x.com/cloudflare"],"logo":{"@type":"ImageObject","url":"https://developers.cloudflare.com/logo.svg"},"address":{"@type":"PostalAddress","streetAddress":"101 Townsend St","addressLocality":"San Francisco","addressRegion":"CA","postalCode":"94107","addressCountry":"US"},"contactPoint":[{"@type":"ContactPoint","contactType":"Customer Support","url":"https://support.cloudflare.com/","availableLanguage":["English"]},{"@type":"ContactPoint","contactType":"Sales","url":"https://www.cloudflare.com/contact/","availableLanguage":["English"]}]},"isPartOf":{"@type":"WebSite","@id":"https://developers.cloudflare.com/#website","name":"Cloudflare Docs","url":"https://developers.cloudflare.com/"}} ```