The lab notebook
Field notes on AI engineering
824 articles · page 26 of 28
n8n Credentials Management: Securing API Keys and Tokens
A practical guide to storing, scoping, and rotating API keys and tokens in n8n so your automations stay secure in production.
n8n for Customer Support: AI Triage and Ticket Routing
Learn how to build an n8n workflow that triages, classifies, and routes support tickets automatically using AI.
n8n for Data Synchronization Between Systems
Learn how to build reliable, production-grade data sync pipelines between apps and databases using n8n's nodes, scheduling, and error handling.
n8n for E-Commerce: Order Processing and Inventory Sync
Learn how n8n automates e-commerce order processing and inventory sync across Shopify, WooCommerce, and warehouse systems.
n8n for Email Automation: Parsing and Routing Incoming Mail
Learn how to build n8n workflows that parse incoming emails, extract structured data, and route messages automatically based on content.
n8n Error Workflows: Handling Failures Gracefully
Learn how to build n8n error workflows that catch failures, alert your team, and keep automations reliable in production.
n8n Expressions: Writing Dynamic Data Transformations
Learn how n8n expressions let you reference, transform, and reshape data between nodes using real {{ }} syntax examples.
n8n for Financial Reporting Automation
Learn how to automate financial reporting with n8n, from pulling data out of accounting APIs to generating and distributing reports on schedule.
n8n for HR Onboarding Automation
Learn how to automate HR onboarding with n8n, from offer acceptance to IT provisioning, using practical workflow patterns you can build today.
n8n for Invoice Processing: OCR, AI Extraction and Approval
Build an n8n workflow that reads invoices with OCR, extracts fields with AI, validates totals, and routes approvals automatically.
n8n for Lead Generation: Scraping, Enriching and Scoring Leads
Build an n8n pipeline that scrapes prospects, enriches them with firmographic data, scores fit, and pushes hot leads to your CRM automatically.
n8n Loop Over Items Node: Iterating Safely at Scale
Learn how n8n's Loop Over Items node batches data, avoids rate limits, and prevents memory crashes on large workflows.
n8n for Meeting Notes: Transcription, Summary and Action Items
Build an n8n workflow that transcribes meetings, summarizes them, and extracts action items automatically.
n8n Merge Node Explained: Combining Data from Multiple Branches
A practical guide to the n8n Merge node's modes, matching rules, and common pitfalls when combining data from multiple workflow branches.
n8n Monitoring: Tracking Workflow Execution Health
A practical guide to monitoring n8n workflow executions so failures get caught before your users notice them.
n8n Performance Tuning: Speeding Up Slow Workflows
A practical guide to diagnosing and fixing slow n8n workflows, from execution data bloat to queue mode and code-level fixes.
n8n for Podcast Production Automation
Learn how to use n8n to automate podcast editing, show notes, transcription, and distribution so you spend less time on busywork and more time recording.
n8n Rate Limiting: Respecting Third-Party API Limits
Learn how to design n8n workflows that respect third-party API rate limits using batching, delays, retries, and queue-based throttling patterns.
n8n for Real Estate Lead Automation
Learn how n8n automates real estate lead capture, scoring, and follow-up so agents stop losing deals to slow response times.
n8n for Recruiting Automation: Resume Screening Workflows
Learn how to build n8n workflows that parse resumes, score candidates against a job description, and route only qualified applicants to your team.
n8n Scaling: Queue Mode and Worker Configuration
A practical guide to n8n queue mode, Redis, and worker scaling with real docker-compose configs for production workloads.
n8n for Social Media Automation: Scheduling and AI Content
Learn how to build n8n workflows that schedule posts and generate AI content across social platforms without paying for a SaaS scheduler.
n8n Split in Batches: Processing Large Datasets Efficiently
Learn how the n8n Split in Batches (Loop Over Items) node processes large datasets in chunks, avoiding timeouts, memory crashes, and rate-limit errors.
n8n Sub-Workflows: Building Reusable Automation Components
Learn how n8n sub-workflows turn tangled automations into reusable, testable components you can maintain for years.
n8n Testing: Validating Workflows Before Going Live
A practical guide to testing n8n workflows with pinned data, sub-workflow isolation, error handling, and staging environments before production.
n8n Version Control: Managing Workflows as Code
Learn how to export, diff, and version n8n workflows as JSON so your automations get real code review, rollback, and CI.
n8n Webhook Security: Verifying Incoming Requests
Learn how to verify n8n webhook requests with HMAC signatures, timing-safe comparisons, replay protection, and IP allowlisting.
n8n Webhooks Explained: Triggering Workflows from External Events
Learn how n8n webhooks work, how to build and secure them, and how to trigger real automations from external events with practical examples.
Ragas Answer Correctness Metric Explained
A practical guide to Ragas AnswerCorrectness — how it blends factual and semantic scoring, how to compute it, and how to tune it for real RAG pipelines.
Using Ragas to Compare Two RAG Pipeline Versions
Learn how to use Ragas metrics and a fixed evaluation dataset to objectively decide whether your new RAG pipeline is actually better than the old one.