But can you really run your app on 2 clouds at the same time?
summary
A production platform serving images runs simultaneously on AWS and GCP with zero downtime by deploying Kubernetes clusters, using Postgres with pglogical for bidirectional DB replication (RDS ↔ AlloyDB), MSK on AWS and Strimzi Kafka on GCP, VPN tunnels for DB/Kafka traffic, and object sync via Storage Transfer + DataSync (event-driven one way, hourly the other). Deployment uses Terraform, observability fixes add months, rollout goes 1%→50% while monitoring 1k RPS per side per region, fixes for rate limits and CPU mismatches make it stable.
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chapters (6)
- 0:00Introduction and motivation
- 3:19Key challenges of dual-cloud apps
- 10:56Data replication strategies
- 17:00Bucket synchronization demo
- 29:49DNS and traffic routing
- 35:47Q&A and closing remarks
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