---
title: "Cloudflare Array form of createBatch() is deprecated: 2026-10-08 | Harbyn"
description: "Cloudflare Array form of createBatch() is deprecated, announced Oct 8, 2026."
canonical: "https://harbyn.com/changes/cloudflare/2026-10-08-workflows-workers-create-workflow-instance-batches-by-count-or-list-2"
last-updated: 2026-10-08
---

# Cloudflare Array form of createBatch() is deprecated

Markdown version of <https://harbyn.com/changes/cloudflare/2026-10-08-workflows-workers-create-workflow-instance-batches-by-count-or-list-2>.

Deprecation - Cloudflare. low severity. In effect.

Passing an array to createBatch() is deprecated. Existing code using the array form continues to work.

## Facts

| Fact | Value |
| --- | --- |
| Vendor | [Cloudflare](https://harbyn.com/vendors/cloudflare.md) |
| Kind | Deprecation |
| Severity | low |
| Status | In effect |
| Announced | Oct 8, 2026 |
| Added to Harbyn | Oct 8, 2026 |
| Lead time | No dated deadline |
| Vendor page | <https://developers.cloudflare.com/changelog/post/2026-10-08-create-batch-object-form/> |
| Review | Reviewed by a person, extracted by a model |

## Find it in your code

```sh
npx harbyn scan
```

This change names no identifier the scanner can match line by line, so the scan tells you whether your repository uses Cloudflare, from its packages and API hosts. Nothing leaves your machine.

## Sources

Where this event comes from: the page we read, when we read it, and the hash of that snapshot.

- <https://developers.cloudflare.com/changelog/rss/workers.xml> (changelog, fetched 2026-10-08 17:16 UTC, sha256 `973fb8762af99818dc6dbcdab6ede7e50c65150b9db76acf6eb3f0f95506d863`)

## Related changes

### More from Cloudflare

- [Clef returns decisions up to 2x faster on Workers AI](https://harbyn.com/changes/cloudflare/2026-10-09-workers-ai-clef-omni-adds-audio-and-video-input-clef-flash-is-now-cheaper-an-2.md) (Behavior change, announced Oct 9, 2026)
- [Clef-flash hosted context window cut to 24K tokens](https://harbyn.com/changes/cloudflare/2026-10-09-workers-ai-clef-omni-adds-audio-and-video-input-clef-flash-is-now-cheaper-an-3.md) (Breaking change, announced Oct 9, 2026)
- [Workers requests and connections get a longer grace period during runtime updates](https://harbyn.com/changes/cloudflare/2026-10-12-workers-more-time-for-requests-to-finish-during-workers-runtime-updates.md) (Behavior change, announced Oct 12, 2026)
- [Workers Builds posts preview URLs faster](https://harbyn.com/changes/cloudflare/2026-10-12-workers-workers-builds-now-posts-preview-urls-in-seconds.md) (Behavior change, announced Oct 12, 2026)

### Changes at other vendors

- [AWS Lambda: Python 3.10 runtime deprecation](https://harbyn.com/changes/aws-lambda/2026-10-08-python-3-10-runtime-deprecation.md) (effective Oct 31, 2026)
- [Jira / Atlassian Cloud: Atlassian Analytics dashboard subscriptions being removed](https://harbyn.com/changes/atlassian-jira/2026-08-10-atlassian-analytics-dashboard-subscriptions-being-removed.md) (effective Nov 2, 2026)
- [Google Cloud Run and Functions: .NET 8 runtime deprecation](https://harbyn.com/changes/google-cloud/2026-10-08-net-8-runtime-deprecation.md) (effective Nov 10, 2026)
- [GitHub: X-GitHub-Stateless-S2S-Token header ignored from 2026-11-30](https://harbyn.com/changes/github/2026-10-02-x-github-stateless-s2s-token-header-ignored-from-2026-11-30.md) (effective Nov 30, 2026)

[All upcoming deadlines](https://harbyn.com/deadlines.md)