无服务器多云架构

Architecture

多云无服务器架构图，展示基于 DNS 的流量路由在 AWS 和 Azure 区域之间切换、健康检查失败时的自动故障转移以及跨云提供商的双向数据复制与冲突解决。该模板模拟多云策略以实现最大可用性和供应商独立性，使用 AWS（Lambda、DynamoDB）和 Azure（Functions、Cosmos DB）的无服务器服务。对于需要云提供商冗余的企业至关重要。

下载 .fz 文件

完整 FlowZap 代码

TrafficManager { # Global Traffic Manager
n1: circle label:"User Request"
n2: rectangle label:"DNS-Based Routing"
n3: diamond label:"Primary Cloud Healthy?"
n4: rectangle label:"Route to Primary (AWS)"
n5: rectangle label:"Failover to Secondary (Azure)"
n1.handle(right) -> n2.handle(left)
n2.handle(right) -> n3.handle(left)
n3.handle(right) -> n4.handle(left) [label="Healthy"]
n3.handle(bottom) -> n5.handle(top) [label="Unhealthy"]
n4.handle(bottom) -> AWS.n6.handle(top) [label="Forward"]
n5.handle(bottom) -> Azure.n11.handle(top) [label="Forward"]
}
AWS { # AWS Region
n6: rectangle label:"API Gateway"
n7: rectangle label:"Lambda Functions"
n8: rectangle label:"DynamoDB"
n9: rectangle label:"S3 Storage"
n10: rectangle label:"CloudWatch Monitoring"
n6.handle(right) -> n7.handle(left) [label="Invoke"]
n7.handle(right) -> n8.handle(left) [label="Read/Write"]
n7.handle(bottom) -> n9.handle(top) [label="Store"]
n10.handle(top) -> TrafficManager.n3.handle(bottom) [label="Health Check"]
}
Azure { # Azure Region
n11: rectangle label:"Azure API Management"
n12: rectangle label:"Azure Functions"
n13: rectangle label:"Cosmos DB"
n14: rectangle label:"Blob Storage"
n15: rectangle label:"Azure Monitor"
n11.handle(right) -> n12.handle(left) [label="Invoke"]
n12.handle(right) -> n13.handle(left) [label="Read/Write"]
n12.handle(bottom) -> n14.handle(top) [label="Store"]
n15.handle(top) -> TrafficManager.n3.handle(bottom) [label="Health Check"]
}
DataSync { # Cross-Cloud Sync
n16: rectangle label:"Event Bridge"
n17: rectangle label:"Bi-Directional Replication"
n18: rectangle label:"Conflict Resolution"
n16.handle(right) -> n17.handle(left) [label="CDC Events"]
n17.handle(right) -> n18.handle(left) [label="Last-Write-Wins"]
n17.handle(top) -> AWS.n8.handle(bottom) [label="Sync"]
n17.handle(top) -> Azure.n13.handle(bottom) [label="Sync"]
}

为什么需要这个工作流？

Relying on a single cloud provider creates vendor lock-in risk and single points of failure at the provider level. A multi-cloud serverless architecture distributes workloads across AWS and Azure, providing automatic failover, negotiating leverage, and compliance with data sovereignty requirements.

工作原理

Step 1: A global traffic manager routes requests based on DNS health checks.
Step 2: If the primary cloud (AWS) is healthy, traffic routes to AWS Lambda and DynamoDB.
Step 3: If the primary fails health checks, traffic automatically fails over to Azure Functions and Cosmos DB.
Step 4: Bi-directional data replication keeps both clouds synchronized.
Step 5: Conflict resolution (last-write-wins) handles concurrent writes during split-brain scenarios.
Step 6: Both clouds report health status back to the traffic manager for continuous monitoring.

替代方案

Single-cloud with multi-region provides simpler redundancy within one provider. Kubernetes abstracts cloud differences but adds operational complexity. This template shows true multi-cloud failover with serverless services.

Key Facts

Template Name	无服务器多云架构
Category	Architecture
Steps	6 workflow steps
Format	FlowZap Code (.fz file)