(global traffic manager)
|Global Traffic Manager is an application-level disaster recovery deployment that allows applications to be managed through DNS so that users can access through the nearest node, support high concurrency load spike balancing, and perform DNS failover based on health checks.|
|CNAME access domain name||After you purchase the GTM service, the system automatically allocates a domain name record for each instance generated. You can connect domain names needing GTM to a GTM instance through CNAME.|
|Address pool||A address pool consists of a group of IP addresses for the same service. For convenience purpose, you can use an address pool to manage a group of IP addresses or domain names.|
|Load balancing||The domain name of an application service is resolved to multiple IP addresses simultaneously. The user access traffic is evenly allocated to each IP address.|
|Weighted round robin||The domain name of an application service is resolved to multiple IP addresses simultaneously. The user access traffic is allocated to each IP address according to its weight.|
|Health check||A group of monitoring nodes detect the availability of IP addresses resolved using DNS in real time over ping, TCP, or HTTP, and also judge whether the application service is normal based on the configured alarm rule.|
|Access policy||GTM uses the DNS smart resolution function to return a group of special IP address pools for uses from different DNS query sources, so that users in different network areas can access the service through the nearest node, improving the access speed of the application service.|
|DNS Failover||When the application service has a fault, GTM automatically switches the user access traffic to another normal node, reducing the service interruption time.|
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