摘要
RR-DNS(Round-Robin DNS)是指循环式域名服务。文中提出一个利用原有RR-DNS提高Web集群系统可用性的机制。这种机制可以定期监测各个服务器,判断每个服务器是否能正常工作,对有问题的服务器立即更改DNS服务器的设定来避免用户对有问题的服务器进行访问。通过维护的DNS主机列表不仅可以为多台服务器提供负载均衡,同时也提高了服务器的可用性。
RR- DNS means round - robin DNS. Puts forward a policy that can improve availability of Web duster on base of original RR - DNS. The policy can check out every Web service in a certain time,judge every service whether it does work and when one of service has any problems. It can change the information of DNS service in order to avoid accessing the service. Can not only improve load balance of service but also improve the availabitity of cluster by sustaining a list of DNS.
出处
《计算机技术与发展》
2008年第12期56-59,共4页
Computer Technology and Development
基金
山东省高等学校实验研究项目基金(2005-400)
曲阜师范大学校级科研项目(XJ0734)