n8n Workflow Patterns Guide — 5 Architectural Patterns with Complete Examples

Architectural guide to 5 proven n8n workflow patterns: Webhook Processing (35% of workflows), HTTP API Integration, Database Operations, AI Agent Workflows, and Scheduled Tasks (28% of all workflows). Complete examples with security best practices (parameterized SQL, rate limiting, credential handling), error handling strategies, and a deep dive on AI agents (8 connection types, Window Buffer memory, tool descriptions).