Description

@acceliance/n8n-nodes-semaphore


This is an n8n community node that provides semaphore functionality for workflow synchronization. Brought to you by Acceliance.

Features

• Create Semaphore: Initialize a semaphore with a specific counter value
• Wait: Block execution until the semaphore counter reaches zero
• Decrement: Decrease the semaphore counter by 1
• Live Counter Display: Shows the current counter value in the n8n UI

Installation

Community Nodes (Recommended)

1. Go to Settings > Community Nodes
2. Select Install
3. Enter @acceliance/n8n-nodes-semaphore in Enter npm package name
4. Agree to the risks and click Install

Manual Installation

npm install @acceliance/n8n-nodes-semaphore

Usage

The Semaphore node allows you to synchronize parallel workflow executions by using a counter-based semaphore.

Operations

1. Create: Initialize a new semaphore with a counter value
2. Wait: Wait for the semaphore counter to reach zero (blocking operation)
3. Decrement: Decrease the counter by 1

Example Workflow

[Trigger] -> [Semaphore: Create (count=3)] -> [Split in Batches]
                                                    |
                                  +----------------+----------------+
                                  |                |                |
                            [Process 1]      [Process 2]      [Process 3]
                                  |                |                |
                            [Decrement]      [Decrement]      [Decrement]
                                  |                |                |
                                  +--------> [Wait] <---------+
                                                |
                                           [Continue...]

License

MIT