background
With the rapid development of the Internet, in order to ensure continuous availability of business, city live, live in different places of the enterprises has become a prime choice. Service Set multi-center, multi-center address internal load, is common practice in many enterprises. In this case, how effective traffic control for optimum user access efficiency becomes particularly important. We simply imagine that:
(1) how to achieve user access to the nearest service center network to reduce time-consuming?
How (2) Services multiple IP addresses or load shared equally weighted polling, to ensure the stability of the whole load?
(3) Service Center an IP address after a failure, how to quickly find and implement isolation? Automatically added to the list after the address resolve to restore, all without human intervention.
(4) When a failure occurs center, how to quickly cut flows to other centers, reduce downtime?
Taking these considerations, Ali cloud-based DNS DNS entry scheduling and distributed cloud monitoring, launched GTM (Global Traffic Manager, hereinafter referred to as both GTM), is designed to help companies achieve user