Workflow: engineer an n8n flow that executes Wait Redis Automate Triggered
Integrations: code, executeWorkflowTrigger, if, manualTrigger, noOp, redis, set, stickyNote, wait

{"meta": {"instanceId": "d1b9b74c805fea7fca1b903ee192d1d4090b516d3c254da86beb2f13b7c2ed2e", "templateCredsSetupCompleted": true}, "nodes": [{"id": "be902a85-fc31-442c-b308-a2350ec5aabb", "name": "When clicking \u2018Test workflow\u2019", "type": "n8n-nodes-base.manualTrigger", "position": [-760, 440], "parameters": {}, "typeVersion": 1}, {"id": "d229b686-9de4-4633-9dba-3e1fe71eedf1", "name": "No Operation, do nothing1", "type": "n8n-nodes-base.noOp", "position": [1820, 800], "parameters": {}, "typeVersion": 1}, {"id": "f583bc97-8da8-488e-ab04-5167dc7a7701", "name": "Information Extractor", "type": "@n8n/n8n-nodes-langchain.informationExtractor", "position": [2420, 540], "parameters": {"text": "={{ $json.buffer.reverse().toJsonString() }}", "options": {"systemPromptTemplate": "Eres un experto extrayendo informaci\u00f3n, tu objetivo es recolectar todos los mensajes. Procura no dejar duplicados. como resultado debes retornar un solo p\u00e1rrafo con todo los mensajes."}, "schemaType": "fromJson", "jsonSchemaExample": "{\n\t\"message\": \"all consolidated messages\"\n}"}, "typeVersion": 1}, {"id": "5b719416-4886-4d38-9d00-30b6237db168", "name": "OpenAI Chat Model", "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi", "position": [2440, 760], "parameters": {"model": {"__rl": true, "mode": "list", "value": "gpt-4.1-nano", "cachedResultName": "gpt-4.1-nano"}, "options": {}}, "credentials": {"openAiApi": {"id": "IogsrRzOBSmZJS5C", "name": "OpenAi account"}}, "typeVersion": 1.2}, {"id": "3d149fc0-caa7-4361-9bf9-33b6252b39eb", "name": "get wait seconds", "type": "n8n-nodes-base.code", "position": [-260, 500], "parameters": {"jsCode": "// Function: Compute waitSeconds\nconst wordCount = $json.message.split(' ').filter(w=>w).length;\nreturn [{ json: { \n  context_id: $json.context_id,\n  message: $json.message,\n  waitSeconds: wordCount < 5 ? 45 : 30 \n}}];\n"}, "typeVersion": 2}, {"id": "cc670735-d126-465f-b0a3-3a4c5e390fd7", "name": "Set last_seen", "type": "n8n-nodes-base.redis", "position": [280, 380], "parameters": {"key": "=last_seen:{{ $json.context_id}}", "ttl": "={{ $json.waitSeconds + 60 }}", "value": "={{$now.toMillis()}}", "expire": true, "keyType": "string", "operation": "set"}, "credentials": {"redis": {"id": "zJtRI38KhsyVjUvP", "name": "Redis account"}}, "typeVersion": 1, "alwaysOutputData": true}, {"id": "20d97d1d-70d4-4c3c-aa12-b1aa31795240", "name": "Get waiting_reply", "type": "n8n-nodes-base.redis", "position": [180, 780], "parameters": {"key": "=waiting_reply:{{$json.context_id}}", "options": {}, "operation": "get", "propertyName": "waiting_reply"}, "credentials": {"redis": {"id": "zJtRI38KhsyVjUvP", "name": "Redis account"}}, "typeVersion": 1}, {"id": "7a2fc681-692f-4f72-9fab-f3ada4bda54b", "name": "Mod input", "type": "n8n-nodes-base.set", "position": [340, 800], "parameters": {"options": {}, "assignments": {"assignments": [{"id": "7ff99444-753d-4ef7-865c-7115761526b8", "name": "waiting_reply", "type": "string", "value": "={{ $json.waiting_reply }}"}, {"id": "58ad6981-c35a-4dd6-b1cd-7c446b85e738", "name": "context_id", "type": "string", "value": "={{$('When Executed by Another Workflow').item.json.context_id  }}"}, {"id": "bd0535a2-be03-436b-8a2e-222c3e26fd04", "name": "message", "type": "string", "value": "={{$('When Executed by Another Workflow').item.json.message }}"}, {"id": "2f583f32-f231-4407-b773-c08b38d464f0", "name": "waitSeconds", "type": "number", "value": "={{ $('get wait seconds').item.json.waitSeconds }}"}]}, "includeOtherFields": true}, "typeVersion": 3.4}, {"id": "84213bef-32be-4cd9-8387-cd76aff5cb38", "name": "waiting_reply?", "type": "n8n-nodes-base.if", "position": [540, 800], "parameters": {"options": {}, "conditions": {"options": {"version": 2, "leftValue": "", "caseSensitive": true, "typeValidation": "strict"}, "combinator": "and", "conditions": [{"id": "8136ea21-d798-41fd-81ed-5c0e7fda73c5", "operator": {"type": "boolean", "operation": "true", "singleValue": true}, "leftValue": "={{ $json.waiting_reply != null}}", "rightValue": ""}]}}, "typeVersion": 2.2}, {"id": "a8472217-aa83-4247-9d7d-3a471e24478a", "name": "When chat message received", "type": "@n8n/n8n-nodes-langchain.chatTrigger", "position": [-740, 640], "webhookId": "85115343-bb86-4bb8-b7a8-c4efded80b3f", "parameters": {"options": {}}, "typeVersion": 1.1}, {"id": "ba4c81ba-92e2-4bef-a9e2-6f8d4c0aa722", "name": "Set waiting_reply", "type": "n8n-nodes-base.redis", "position": [840, 720], "parameters": {"key": "=waiting_reply:{{ $json.context_id }}", "ttl": "={{ $json.waitSeconds }}", "value": "true", "expire": true, "operation": "set"}, "credentials": {"redis": {"id": "zJtRI38KhsyVjUvP", "name": "Redis account"}}, "typeVersion": 1}, {"id": "0ce783b6-b76b-4a5d-96ae-11708b7532ba", "name": "Get buffer", "type": "n8n-nodes-base.redis", "position": [1820, 600], "parameters": {"key": "=buffer_in:{{ $('get wait seconds').item.json.context_id }}", "options": {}, "operation": "get", "propertyName": "buffer"}, "credentials": {"redis": {"id": "zJtRI38KhsyVjUvP", "name": "Redis account"}}, "typeVersion": 1}, {"id": "21864061-1d1f-4528-a03f-1237e9c69a31", "name": "Delete buffer_in", "type": "n8n-nodes-base.redis", "position": [2940, 680], "parameters": {"key": "=buffer_in:{{$json.context_id}}", "operation": "delete"}, "credentials": {"redis": {"id": "zJtRI38KhsyVjUvP", "name": "Redis account"}}, "typeVersion": 1}, {"id": "8828aa7b-6153-4677-84a8-3ef2f884792c", "name": "Delete waiting_reply", "type": "n8n-nodes-base.redis", "position": [2940, 840], "parameters": {"key": "=waiting_reply:{{$json.context_id}}", "operation": "delete"}, "credentials": {"redis": {"id": "zJtRI38KhsyVjUvP", "name": "Redis account"}}, "typeVersion": 1}, {"id": "fc369067-7213-4d8c-b515-c34c4db997e4", "name": "WaitSeconds", "type": "n8n-nodes-base.wait", "position": [1020, 720], "webhookId": "c218d471-2f0f-4bd7-87d1-5431ac602211", "parameters": {"amount": "={{ $json.waitSeconds }} "}, "typeVersion": 1.1}, {"id": "2daa2ab9-756a-4fdb-8573-b4570c58d6e5", "name": "Buffer messages", "type": "n8n-nodes-base.redis", "position": [-40, 440], "parameters": {"list": "=buffer_in:{{$json.context_id}}", "operation": "push", "messageData": "={\"text\": \"{{ $json.message }}\", \"timestamp\": \"{{$now}}\"}"}, "credentials": {"redis": {"id": "zJtRI38KhsyVjUvP", "name": "Redis account"}}, "typeVersion": 1}, {"id": "4d5bc5f0-11ce-4f7f-b44b-0514a5ab5671", "name": "Set buffer_count increment", "type": "n8n-nodes-base.redis", "position": [280, 560], "parameters": {"key": "=buffer_count:{{$json.context_id}}", "expire": "={{$json.waitSeconds + 60}}", "operation": "incr"}, "credentials": {"redis": {"id": "zJtRI38KhsyVjUvP", "name": "Redis account"}}, "typeVersion": 1, "alwaysOutputData": true}, {"id": "dcaee1a8-ea32-4a9d-b32f-f0418644027c", "name": "Get last_seen", "type": "n8n-nodes-base.redis", "position": [1220, 720], "parameters": {"key": "=last_seen:{{$json.context_id}}", "options": {}, "operation": "get", "propertyName": "last_seen"}, "credentials": {"redis": {"id": "zJtRI38KhsyVjUvP", "name": "Redis account"}}, "typeVersion": 1}, {"id": "908c4a4c-1c60-4e90-827a-064a0b4d6bfd", "name": "Get buffer_count", "type": "n8n-nodes-base.redis", "position": [1400, 720], "parameters": {"key": "=buffer_count:{{ $('Mod input').item.json.context_id }}", "options": {}, "operation": "get", "propertyName": "count"}, "credentials": {"redis": {"id": "zJtRI38KhsyVjUvP", "name": "Redis account"}}, "typeVersion": 1}, {"id": "1ceb472b-3944-4d74-994b-867ade006e4e", "name": "Map ouput", "type": "n8n-nodes-base.set", "position": [3140, 380], "parameters": {"options": {}, "assignments": {"assignments": [{"id": "e8d80ab4-74a2-4c30-8500-8dddc5802eec", "name": "message", "type": "string", "value": "={{ $json.output.message }}"}, {"id": "7e7fcee4-14b3-4393-b516-b07a53c018b3", "name": "context_id", "type": "string", "value": "={{$('get wait seconds').item.json.context_id }}"}]}}, "typeVersion": 3.4}, {"id": "0be7e5eb-1972-4a95-b5bf-4e564fc4ef7c", "name": "Check Inactivity + Count", "type": "n8n-nodes-base.if", "position": [1580, 720], "parameters": {"options": {}, "conditions": {"options": {"version": 2, "leftValue": "", "caseSensitive": true, "typeValidation": "loose"}, "combinator": "and", "conditions": [{"id": "0f294c51-0629-4ae1-a009-68c2f5fd30b5", "operator": {"type": "boolean", "operation": "true", "singleValue": true}, "leftValue": "={{$json.count != null && Number($json.count) >= 1}}", "rightValue": ""}, {"id": "1626238d-fb00-4ce8-89df-a40a4f29f52a", "operator": {"type": "boolean", "operation": "true", "singleValue": true}, "leftValue": "={{$('Get last_seen').item.json.last_seen != null}}", "rightValue": ""}, {"id": "df819099-1f6e-4bee-a017-32b729c836a3", "operator": {"type": "boolean", "operation": "true", "singleValue": true}, "leftValue": "={{($now.toMillis() - $('Get last_seen').item.json.last_seen) >= $('Mod input').item.json.waitSeconds * 1000}}", "rightValue": ""}]}, "looseTypeValidation": true}, "typeVersion": 2.2}, {"id": "0c3bd62b-8cf6-4b34-8010-ebe819db9667", "name": "Delete waiting_reply1", "type": "n8n-nodes-base.redis", "position": [2940, 1000], "parameters": {"key": "=buffer_count:{{$json.context_id}}", "operation": "delete"}, "credentials": {"redis": {"id": "zJtRI38KhsyVjUvP", "name": "Redis account"}}, "typeVersion": 1}, {"id": "bbf45966-833b-4f5f-ae11-0578614eb156", "name": "No Operation, do nothing2", "type": "n8n-nodes-base.noOp", "position": [720, 540], "parameters": {}, "typeVersion": 1}, {"id": "5683eebf-ba51-4a6b-a803-de6acf1b1ea8", "name": "Wait", "type": "n8n-nodes-base.wait", "position": [2080, 880], "webhookId": "b8e2e214-f82b-49c2-96e2-91e093137857", "parameters": {"amount": "={{ Math.max(0, Math.ceil(( $('Mod input').item.json.waitSeconds * 1000 - ($now.toMillis() - $('Get last_seen').item.json.last_seen)) / 1000)) }}"}, "typeVersion": 1.1}, {"id": "c0478f60-944e-4c85-bb9c-9abe0d4238c0", "name": "When Executed by Another Workflow", "type": "n8n-nodes-base.executeWorkflowTrigger", "position": [-480, 720], "parameters": {"workflowInputs": {"values": [{"name": "context_id"}, {"name": "message"}]}}, "typeVersion": 1.1}, {"id": "91a650b7-ddd4-4dbf-a300-523f72f0bdb5", "name": "Mock input data", "type": "n8n-nodes-base.set", "position": [-500, 500], "parameters": {"options": {}, "assignments": {"assignments": [{"id": "0543fdb7-4a22-4530-bdb7-ae7064732fae", "name": "context_id", "type": "string", "value": "={{ $json.sessionId1 || '1lap075ha12' }}"}, {"id": "bead5646-a689-4deb-8f4b-b22aa97b51ca", "name": "message", "type": "string", "value": "={{ $json.chatInput || 'Chat 2'}}"}]}}, "typeVersion": 3.4}, {"id": "cb450e32-7e19-469c-9a5c-3d9da5bf1dfa", "name": "No Operation, do nothing3", "type": "n8n-nodes-base.noOp", "position": [3320, 840], "parameters": {}, "typeVersion": 1}, {"id": "b463e405-3355-48a2-a043-42941d7025c3", "name": "Sticky Note", "type": "n8n-nodes-base.stickyNote", "position": [2880, 660], "parameters": {"color": 7, "width": 700, "height": 780, "content": "\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n### \ud83e\uddf9 Buffer Cleanup\n\nAfter consolidation and reply:\n\n* **DELETE** keys:\n\n  * `buffer_in:{{context_id}}`\n  * `buffer_count:{{context_id}}`\n  * `waiting_reply:{{context_id}}`\n"}, "typeVersion": 1}, {"id": "1b5397f8-aa7e-4b2b-afb9-5da97d99e049", "name": "Sticky Note1", "type": "n8n-nodes-base.stickyNote", "position": [-80, 60], "parameters": {"color": 7, "width": 920, "height": 940, "content": "### \ud83d\udce5 Input Buffer\n\n1. **Save incoming message**\n\n   * Push the new message into Redis list `buffer_in:{{context_id}}`.\n2. **Update metadata**\n\n   * Set `last_seen:{{context_id}}` to the current timestamp (with a TTL of `waitSeconds + 60`).\n   * INCR the counter key `buffer_count:{{context_id}}` (also expiring after `waitSeconds + 60`).\n3. **Check \u201cwaiting\u201d flag**\n\n   * GET `waiting_reply:{{context_id}}`.\n   * If it\u2019s null (no batch in flight), SET it to `true` with TTL `waitSeconds` to block concurrent triggers."}, "typeVersion": 1}, {"id": "edc07500-ccad-4e72-adc1-1a63a3a06609", "name": "Sticky Note2", "type": "n8n-nodes-base.stickyNote", "position": [1180, 340], "parameters": {"color": 7, "width": 1200, "height": 820, "content": "### \u23f3 Inactivity & Threshold Check\n\n1. **Fetch state**\n\n   * GET `last_seen:{{context_id}}` (when the last message arrived)\n   * GET `buffer_count:{{context_id}}` (how many messages are queued)\n2. **Evaluate trigger**\n\n   * **Inactivity:** `(now \u2013 last_seen) \u2265 waitSeconds * 1000`\n   * **Or threshold:** `buffer_count \u2265 1` (or your desired batch size)\n3. **Branch**\n\n   * **True:** proceed to \u201cGet buffer\u201d and consolidate.\n   * **False:** exit (noOp) and let the waiting\u2010node/flag mechanism retry later."}, "typeVersion": 1}], "pinData": {"When Executed by Another Workflow": [{"message": "Mensaje del usuario despues de pasar por el workflow de n8n:\nTexto: \u00a1Hola! Quiero m\u00e1s informaci\u00f3n.;\nImagen: ;\nAudio: ;", "context_id": "573058148988@s.whatsapp.net"}]}, "connections": {"Wait": {"main": [[{"node": "Check Inactivity + Count", "type": "main", "index": 0}]]}, "Map ouput": {"main": [[]]}, "Mod input": {"main": [[{"node": "waiting_reply?", "type": "main", "index": 0}]]}, "Get buffer": {"main": [[{"node": "Information Extractor", "type": "main", "index": 0}]]}, "WaitSeconds": {"main": [[{"node": "Get last_seen", "type": "main", "index": 0}]]}, "Get last_seen": {"main": [[{"node": "Get buffer_count", "type": "main", "index": 0}]]}, "Set last_seen": {"main": [[{"node": "No Operation, do nothing2", "type": "main", "index": 0}]]}, "waiting_reply?": {"main": [[{"node": "No Operation, do nothing2", "type": "main", "index": 0}], [{"node": "Set waiting_reply", "type": "main", "index": 0}]]}, "Buffer messages": {"main": [[{"node": "Set buffer_count increment", "type": "main", "index": 0}, {"node": "Set last_seen", "type": "main", "index": 0}, {"node": "Get waiting_reply", "type": "main", "index": 0}]]}, "Mock input data": {"main": [[{"node": "get wait seconds", "type": "main", "index": 0}]]}, "Delete buffer_in": {"main": [[{"node": "No Operation, do nothing3", "type": "main", "index": 0}]]}, "Get buffer_count": {"main": [[{"node": "Check Inactivity + Count", "type": "main", "index": 0}]]}, "get wait seconds": {"main": [[{"node": "Buffer messages", "type": "main", "index": 0}]]}, "Get waiting_reply": {"main": [[{"node": "Mod input", "type": "main", "index": 0}]]}, "OpenAI Chat Model": {"ai_languageModel": [[{"node": "Information Extractor", "type": "ai_languageModel", "index": 0}]]}, "Set waiting_reply": {"main": [[{"node": "WaitSeconds", "type": "main", "index": 0}]]}, "Delete waiting_reply": {"main": [[{"node": "No Operation, do nothing3", "type": "main", "index": 0}]]}, "Delete waiting_reply1": {"main": [[{"node": "No Operation, do nothing3", "type": "main", "index": 0}]]}, "Information Extractor": {"main": [[{"node": "Map ouput", "type": "main", "index": 0}, {"node": "Delete buffer_in", "type": "main", "index": 0}, {"node": "Delete waiting_reply", "type": "main", "index": 0}, {"node": "Delete waiting_reply1", "type": "main", "index": 0}]]}, "Check Inactivity + Count": {"main": [[{"node": "Get buffer", "type": "main", "index": 0}], [{"node": "No Operation, do nothing1", "type": "main", "index": 0}]]}, "No Operation, do nothing1": {"main": [[{"node": "Wait", "type": "main", "index": 0}]]}, "Set buffer_count increment": {"main": [[{"node": "No Operation, do nothing2", "type": "main", "index": 0}]]}, "When chat message received": {"main": [[{"node": "Mock input data", "type": "main", "index": 0}]]}, "When Executed by Another Workflow": {"main": [[{"node": "get wait seconds", "type": "main", "index": 0}]]}, "When clicking \u2018Test workflow\u2019": {"main": [[{"node": "Mock input data", "type": "main", "index": 0}]]}}}