Resume

The Resume action allows you to continue a failed workflow run from the exact point of failure, preserving all successfully completed steps and their results.

This approach is ideal when:

• The workflow has long-running or resource-intensive steps that have already succeeded.
• You want to preserve progress and avoid re-executing successful operations.
• The failure was a temporary issue that can now be resolved.

You can retry the failure function of a workflow run if it has failed

You can perform this action programmatically as well:

TypeScript

import { Client } from "@upstash/workflow";

const client = new Client({ token: "<WORKFLOW_TOKEN>" });

await client.dlq.resume({
  dlqId: "dlq-12345",
  retries: 3,
});

You can modify workflow code as long as changes occur after the failed steps. Changes to steps prior to the failure are not allowed and may break the workflow.

For more details, check out the Handle workflow route code changes page.