edge server
- sits between ISP (因为 ISP 是家家户户网络的出口, good location), IxPs
- 主要目的: 把静态资源都 cache 在离 client 地理位置近的地方, 降低 latency
Other edges devices include routers and routing switches. - What is a CDN edge server? | Cloudflare
- why are routers “edge devices”?
- from the perspective of a home network, routers are the logical edges; they are on the edge of the network, handling date coming in and leaving