n8n_stack/imports/workflows/ollama-chat-cleanup.json

{
  "id": "1002",
  "name": "Chatbot Session Cleanup (TTL 2h)",
  "nodes": [
    {
      "parameters": {
        "rule": {
          "interval": [{ "field": "hours", "hoursInterval": 1 }]
        }
      },
      "id": "node-sc-001",
      "name": "Jede Stunde",
      "type": "n8n-nodes-base.scheduleTrigger",
      "typeVersion": 1.2,
      "position": [100, 300]
    },
    {
      "parameters": {
        "operation": "executeQuery",
        "query": "DELETE FROM chat_sessions WHERE updated_at < NOW() - INTERVAL '2 hours' RETURNING session_id",
        "additionalFields": {}
      },
      "id": "node-pg-003",
      "name": "Delete Expired Sessions",
      "type": "n8n-nodes-base.postgres",
      "typeVersion": 2.5,
      "position": [300, 300],
      "credentials": {
        "postgres": {
          "id": "pnmeNZ3ONDWrQP8M",
          "name": "Postgres account"
        }
      }
    },
    {
      "parameters": {
        "jsCode": "const deleted = $input.all().map(i => i.json.session_id).filter(Boolean);\nconsole.log(`[Cleanup] ${deleted.length} Session(s) gelöscht:`, deleted);\nreturn [{ json: { deleted_count: deleted.length, deleted_sessions: deleted } }];"
      },
      "id": "node-cd-004",
      "name": "Log Result",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [500, 300]
    }
  ],
  "connections": {
    "Jede Stunde":             { "main": [[{ "node": "Delete Expired Sessions", "type": "main", "index": 0 }]] },
    "Delete Expired Sessions": { "main": [[{ "node": "Log Result",              "type": "main", "index": 0 }]] }
  },
  "active": false,
  "settings": { "executionOrder": "v1" },
  "tags": []
}