# Acquire hierarchical mutex tokens: n8n workflow template

> Started by an event in a connected app, and works across n8n data table. 17 steps, 2 branches, 2 loops or waits: a working afternoon to understand properly.

Source: https://millionrounds.com/workflow/acquire-hierarchical-mutex-tokens (Millionrounds; every figure on the page links to its filing or article)

[Automation library](https://millionrounds.com/workflows) · [Integrations](https://millionrounds.com/workflows?category=Integrations#library)

# Acquire hierarchical mutex tokens

Started by an event in a connected app, and works across n8n data table. 17 steps, 2 branches, 2 loops or waits: a working afternoon to understand properly.

Medium

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Facquire-hierarchical-mutex-tokens)

**17 steps** Medium: a working afternoon

**2** Branches: places the flow splits

**2** Loops or waits

**1** Service it connects to

## The flow

Starts it 1 Logic 12 Service 4

The steps in the order they run, from what starts it.

- 1 **When Called by Another Workflow** Execute Workflow trigger *Starts it*
- 2 **Resolve Namespace Chain** Code *Logic*
- 3 **Get All Mutex Rows** Data Table *Service*
- 4 **Plan Namespace Claims** Code *Logic*
- 5 **Should Wait?** If *Logic*
- 6 **Wait For Slot Or Quota** Wait *Logic*
- 7 **Split Claims** Split Out *Logic*
- 8 **Upsert Claimed Levels** Data Table *Service*
- 9 **Limit After Upsert** Limit *Logic*
- 10 **Verify All Mutex Rows** Data Table *Service*
- 11 **Confirm Chain Ownership** Code *Logic*
- 12 **Claim Succeeded?** If *Logic*
- 13 **Return Token** Set *Logic*
- 14 **Split Rollback Keys** Split Out *Logic*
- 15 **Rollback Partial Claims** Data Table *Service*
- 16 **Limit After Rollback** Limit *Logic*
- 17 **Wait After Race** Wait *Logic*

## How it's built

- **Starts on:** An event in a connected app
- **Steps:** 17, with 2 branches, 2 loops or waits
- **Size:** Medium: a working afternoon
- **Connects to:** n8n data table
- **Model:** None. This is plumbing, not judgement

## Questions

What does it need to run?

An n8n account. You connect your own accounts after importing it; none are included.

What starts it?

It starts on an event in a connected app.

Does it use AI?

No. Every step is fixed logic or a call to a service, so it does the same thing every time.

How long does it take to set up?

Plan an afternoon. 17 steps is enough that you should read each one before running it.

How do I import it?

Copy the workflow, open a new workflow in n8n and paste. The steps appear on the canvas, ready for your own accounts.

**Before you run it**

Nothing here has been tested by us. It is somebody's working automation, read and described from its own steps. Treat the connections it wants as a list of accounts it will touch, and read the 17 steps before you point it at anything that matters.

## Run it in n8n

- **Create your n8n account** Free to start. n8n is where the workflow runs. [Create an n8n account ↗](https://millionrounds.com/n8n)
- **Download the workflow** Free with a Millionrounds account. [Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Facquire-hierarchical-mutex-tokens)
- **Paste it into n8n** Open a new workflow in n8n and paste. Then connect your own accounts.

Stored with the author's traces removed: canvas notes, instance identifiers, saved credential names and any live document they had left behind.

## Connects to

Each opens the other workflows that use it.

[n8n data table](https://millionrounds.com/workflows?service=n8n+data+table#library)

## Workflows like it

Also integrations, with the same services where possible, closest in size first.

- [**Back up a Linux server directory to Backblaze B2** 18 steps · n8n data table](https://millionrounds.com/workflow/back-up-a-linux-server-directory-to-backblaze-b2)
- [**Back up self-hosted workflows to Google Drive daily** 18 steps · Google Drive, n8n data table](https://millionrounds.com/workflow/back-up-self-hosted-workflows-to-google-drive-daily)
- [**Manage AI agent chat sessions** 18 steps · n8n data table](https://millionrounds.com/workflow/manage-ai-agent-chat-sessions)
- [**Protect downstream APIs with Data Tables** 16 steps · n8n data table](https://millionrounds.com/workflow/protect-downstream-apis-with-data-tables)
- [**Validate signup email addresses with DNS and Data Tables** 16 steps · n8n data table](https://millionrounds.com/workflow/validate-signup-email-addresses-with-dns-and-data-tables)
- [**Back up Linux servers to a remote server with Borg and SSH** 15 steps · n8n data table](https://millionrounds.com/workflow/back-up-linux-servers-to-a-remote-server-with-borg-and-ssh)