Concepts

Global Accelerator

A global accelerator directs user requests to endpoints through the Huawei backbone network. You can create a global accelerator and select the acceleration area where you would like to use the global accelerator. The system will assign an anycast IP address for access from the nearest access point. When a client sends a request, the request will first go to the nearest access point, then to the Huawei backbone network, and finally to the optimal endpoints.

Anycast IP Address

Global Accelerator assigns an anycast IP address for each acceleration area. Clients can access the backbone network from the nearest access point through this anycast IP address.

Listener

A listener checks requests from clients based on the protocol and port you have configured and routes the requests to the optimal endpoint in the associated endpoint group. Each listener can have one endpoint group associated in each region.

Endpoint

An endpoint is where requests are routed to. You can add an EIP as an endpoint.

If there are multiple endpoints in an endpoint group, you can set a weight for each endpoint to specify the proportion of requests to distribute to each endpoint. The global accelerator adds up the weights of all endpoints in the endpoint group and routes requests to each endpoint based on the ratio of its weight to the total weights.

Endpoint Group

An endpoint group includes one or more endpoints in a given region. You can set a weight for each endpoint group, and Global Accelerator will route requests based on the weight you specified.

You need to associate an endpoint group with each listener, which will route traffic to the endpoints in the associated endpoint group.

Health Check

Global Accelerator provides health check to ensure service reliability and availability. TCP and UDP can be used for health checks.

After you enable health check, the global accelerator periodically sends requests to endpoints to check their status. If any endpoints become unavailable, the global accelerator stops sending requests to these endpoints. After the endpoints recover from failure, the global accelerator starts routing requests to them again.