Chunked Batch Processor

The workflow JSON

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{
  "name": "Chunked Batch Processor",
  "nodes": [
    {
      "parameters": {
        "httpMethod": "POST",
        "path": "chunked-batch-processor",
        "responseMode": "responseNode",
        "options": {}
      },
      "id": "04-webhook-trigger",
      "name": "Webhook Trigger",
      "type": "n8n-nodes-base.webhook",
      "typeVersion": 2,
      "position": [
        -900,
        0
      ]
    },
    {
      "parameters": {},
      "id": "04-manual-trigger",
      "name": "Manual Trigger",
      "type": "n8n-nodes-base.manualTrigger",
      "typeVersion": 1,
      "position": [
        -900,
        180
      ]
    },
    {
      "parameters": {
        "jsCode": "const body = $json.body || $json;\nconst items = Array.isArray(body.items) ? body.items : [];\nreturn [{ json: { items, batch_size: Number(body.batch_size || 10) } }];"
      },
      "id": "04-load-input-array",
      "name": "Load Input Array",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        -640,
        0
      ]
    },
    {
      "parameters": {
        "jsCode": "if (!$json.items.length) {\n  return [{ json: { ok: false, error: 'items must be a non-empty array', statusCode: 400 } }];\n}\nreturn $json.items.map((item, index) => ({ json: { item, item_index: index, batch_size: $json.batch_size } }));"
      },
      "id": "04-validate-array",
      "name": "Validate Array",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        -400,
        0
      ]
    },
    {
      "parameters": {
        "batchSize": "={{$json.batch_size || 10}}",
        "options": {}
      },
      "id": "04-split-in-batches",
      "name": "Split In Batches",
      "type": "n8n-nodes-base.splitInBatches",
      "typeVersion": 3,
      "position": [
        -160,
        0
      ]
    },
    {
      "parameters": {
        "jsCode": "return [{ json: { id: $json.item.id || $json.item_index, status: 'processed', processed_at: new Date().toISOString(), item: $json.item } }];"
      },
      "id": "04-process-item-placeholder",
      "name": "Process Item Placeholder",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        80,
        -80
      ]
    },
    {
      "parameters": {
        "amount": 1,
        "unit": "seconds"
      },
      "id": "04-delay-rate-limit",
      "name": "Delay / Rate Limit",
      "type": "n8n-nodes-base.wait",
      "typeVersion": 1.1,
      "position": [
        320,
        -80
      ]
    },
    {
      "parameters": {
        "jsCode": "return [{ json: { ok: true, processed_count: $items().length, failed_count: 0, results: $items().map((entry) => entry.json) } }];"
      },
      "id": "04-collect-results",
      "name": "Collect Results",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        560,
        -80
      ]
    },
    {
      "parameters": {
        "jsCode": "return [{ json: { ...$json, failed_items: [] } }];"
      },
      "id": "04-handle-failed-items",
      "name": "Handle Failed Items",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        800,
        -80
      ]
    },
    {
      "parameters": {
        "respondWith": "json",
        "responseBody": "={{$json}}",
        "options": {
          "responseCode": 200
        }
      },
      "id": "04-return-summary",
      "name": "Return Summary",
      "type": "n8n-nodes-base.respondToWebhook",
      "typeVersion": 1.1,
      "position": [
        1040,
        -80
      ]
    }
  ],
  "connections": {
    "Webhook Trigger": {
      "main": [
        [
          {
            "node": "Load Input Array",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Manual Trigger": {
      "main": [
        [
          {
            "node": "Load Input Array",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Load Input Array": {
      "main": [
        [
          {
            "node": "Validate Array",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Validate Array": {
      "main": [
        [
          {
            "node": "Split In Batches",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Split In Batches": {
      "main": [
        [
          {
            "node": "Process Item Placeholder",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Process Item Placeholder": {
      "main": [
        [
          {
            "node": "Delay / Rate Limit",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Delay / Rate Limit": {
      "main": [
        [
          {
            "node": "Collect Results",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Collect Results": {
      "main": [
        [
          {
            "node": "Handle Failed Items",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Handle Failed Items": {
      "main": [
        [
          {
            "node": "Return Summary",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "settings": {
    "executionOrder": "v1"
  },
  "versionId": "placeholder-04"
}

About this workflow

Chunked Batch Processor. Webhook trigger; 10 nodes.

Source: https://github.com/gharisj3/n8n-workflow-library/blob/main/workflows/04-chunked-batch-processor/workflow.json — original creator credit. Request a take-down →

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