AWS & CloudAmazon Route 53 là dịch vụ DNS (Domain Name System) managed, highly available của AWS với SLA 100% uptime; tên gọi từ cổng DNS TCP/UDP 53.
Các routing policy:
- Simple routing — map domain tới một IP/resource, không có logic
- Weighted routing — phân phối traffic theo tỷ lệ phần trăm (vd: 90% v1, 10% v2 cho canary deployment)
- Latency-based routing — route đến region AWS có latency thấp nhất so với client
- Geolocation routing — route theo quốc gia/châu lục của client (dùng cho content localization, compliance data residency)
- Geoproximity routing — tương tự geolocation nhưng có thể shift traffic theo bias
- Failover routing — primary/secondary, tự động chuyển sang secondary khi health check fail
- Multi-value routing — trả về nhiều IP ngẫu nhiên, client tự chọn (load balancing cơ bản phía DNS)
Health Checks tích hợp cho phép Route 53 detect endpoint unhealthy và tự động failover. Route 53 Resolver cung cấp DNS resolution giữa on-premise và VPC qua Direct Connect/VPN.
Amazon Route 53 is AWS's managed, highly available DNS (Domain Name System) service with a 100% uptime SLA; the name comes from DNS port TCP/UDP 53.
Routing policies:
- Simple routing — maps a domain to a single IP/resource with no logic
- Weighted routing — distributes traffic by percentage (e.g., 90% to v1, 10% to v2 for canary deployments)
- Latency-based routing — routes to the AWS region with the lowest latency relative to the client
- Geolocation routing — routes based on the client's country/continent (used for content localization and data residency compliance)
- Geoproximity routing — similar to geolocation but allows traffic shifting via bias
- Failover routing — primary/secondary, automatically switches to secondary when a health check fails
- Multi-value routing — returns multiple random IPs for the client to choose from (basic DNS-level load balancing)
Integrated health checks allow Route 53 to detect unhealthy endpoints and automatically fail over. Route 53 Resolver provides DNS resolution between on-premises environments and VPCs over Direct Connect/VPN.