About This Architecture

Multi-AZ notification routing pipeline leveraging AWS WAF, ALB, and RDS with cross-region failover. Incoming notifications flow through WAF and Application Load Balancer into an Ingestion Layer that parses and normalizes events across two availability zones. The Rule Engine evaluates routing rules and applies actions (block, delay, upgrade) while logging to DynamoDB and persisting state to RDS Primary with standby replication. Delivery Scheduler uses SQS queues to trigger ECS-based Client Dashboard services, with CloudWatch monitoring the entire pipeline for operational visibility. This architecture demonstrates high-availability patterns essential for mission-critical notification systems requiring sub-second latency and zero data loss. Fork this diagram on Diagrams.so to customize subnets, add SNS topics, or integrate additional delivery channels like SMS or email. Consider adding cross-region replication for RDS and DynamoDB if global failover is required.

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How do I design a multi-AZ notification routing system on AWS with automatic failover and logging?

This diagram shows a production notification pipeline spanning two AWS availability zones with WAF and ALB for ingestion, a Rule Engine for routing decisions, RDS primary/standby for state persistence, and DynamoDB for distributed logging. SQS queues trigger ECS services for delivery, while CloudWatch monitors the entire flow for operational health and performance.