Repeater

Description

The Repeater module executes the next workflow node a specified number of times, generating parallel iterations. Unlike the Iterator which splits an existing array, the Repeater creates N executions of the same flow with the same input data, adding information about the current repetition (_repetition). It supports nested iterations with hierarchical levels, building a complete iteration tree. Each execution receives detailed metadata including the current index, total repetitions, iteration level, and first/last iteration flags.

Configuration

Parameters

Parameter	Type	Required	Description
repetitions	number	Yes	Number of times the execution will be repeated. Minimum: 1, Maximum: 1000. Default: 1.

Output

{
  "_iterating": true,
  "batch": [
    {
      "_meta_": {
        "workflowRunId": "workflow_123",
        "iterationId": "uuid-v4",
        "currentChunk": 0,
        "totalChunks": 3,
        "repetitionNumber": 1,
        "isFirstIteration": true,
        "isLastIteration": false
      },
      "data": {
        "datos_originales": "valor",
        "_repetition": {
          "current": 1,
          "total": 3,
          "isFirst": true,
          "isLast": false
        }
      },
      "nextModule": "siguiente_modulo"
    }
  ],
  "data": {
    "summary": [{ "index": 1, "status": "pending", "repetition": 1, "path": "0" }],
    "iterationId": "uuid-v4",
    "iterationLevel": 1,
    "totalRepetitions": 3
  }
}

Usage Example

Basic case

{
  "label": "Repeater",
  "repetitions": 5
}

Notes

• The number of repetitions must be between 1 and 1000. Values outside this range generate an error.
• Each repetition receives a _repetition object with: current (current number), total, isFirst, and isLast.
• Generates a unique iterationId (UUID v4) for each Repeater execution.
• Supports nested iterations: if the Repeater is inside another Iterator/Repeater, it increments the iteration level and builds a hierarchical tree.
• The _meta_ includes: iterationLevel, iterationPath, iterationTree, mergeGroupKey, and mergeLevel for compatibility with merge nodes.
• Original data is passed without modification to each repetition (not deep cloned).
• Returns _iterating: true so the workflow engine executes each batch element in parallel.

Related Nodes

• Iterator - iterates over an existing array instead of repeating N times
• MergeResults - recombines the repetition results
• MergeIterator - simplified iteration merge