1. Meaning If a service has multiple domain entry points and accessing it through any of them yields the same content, those domains are called peer domains. For example, through peer domains you can provide three identical file or API services. https://server.chenshaowen.com/static/index.html https://server-peer-a.chenshaowen.com/static/index.html https://server-peer-b.chenshaowen.com/static/index.html 2. Uses 2.1 Raising the Browser Concurrency Limit Browsers usually cap the maximum number of concurrent requests to a single domain at no more than 6 per second.

1. About Traffic Distribution Traffic governance is divided into north-south and east-west. In the typical drawing convention for Network Diagrams, core network components are drawn at the top and clients at the bottom, with different service levels drawn in between — hence the names north-south and east-west traffic. North-south traffic refers to traffic initiated by clients, while east-west traffic refers to traffic between services.

1. Global Network Planning Many global, multi-region infrastructures do not put much thought into network planning at the outset. Once the business grows complex enough, they are forced into network adjustments and optimization. Yet any major network change has a huge impact on the business. In the end you are stuck in a dilemma, able to do nothing but invest more people, carry the baggage of history, and walk along the edge of a cliff again and again.

1. Add DNS to the Host 1.1 CentOS The first method: manage DNS with /etc/resolv.conf Disable NetworkManager If you do not disable NetworkManager, the DNS records you add directly to /etc/resolv.conf are lost after you restart the NetworkManager component. 1 2 3 4 vim /etc/NetworkManager/NetworkManager.conf [main] dns=none Add dns=none to the [main] section.

1. Error message When pulling an image, you will occasionally run into the following error: 1 2 3 4 5 6 7 8 docker pull node:10.16-alpine 10.16-alpine: Pulling from library/node e7c96db7181b: Already exists 50958466d97a: Pulling fs layer 56174ae7ed1d: Pulling fs layer 284842a36c0d: Pulling fs layer error pulling image configuration: Get https://production.