Research On The User Access Division Method Of Long Distance Double Live Data Centers

Long distance double live data center is a trend of today's construction mode,it not only has higher ability of disaster,also can shunt in real-time.Today,many organizations have built multi-data centers.The rapid development of the long-distance double live data center has higher requirements on the balance system access pressure and the rapid response of online transactions.How to divide the user access into the best data center reasonably to balance the access pressure of the long distance data centers system,make full use of system resources,and make the access division more reasonable has become a problem to be solved.Firstly,several construction modes of multi-data center are analyzed,and the construction mode of double live data center of civil aviation passenger service system is given.Secondly,in view of the current method of user access is not comprehensive enough,a method of user access of long distance double data centers based on weighted Voronoi diagram is been proposed.This algorithm considers the performance condition and load condition of the data center based on the distance between users and data center.Secondly,in order to provide better security for user access between data centers,a load balancing algorithm based on the overloaded server tracing is been proposed.The algorithm combining the history information of the server,determine if the server is overloaded continuously through making a mark on the overloaded server and suspend assign user access to this server in this cycle.It avoids the load imbalance because of the different performance condition of different server and the server in poor condition may result in the load imbalance.Finally,focus on the disadvantages that the method of the access division method of long distance multi-data centers based on the voronoi diagram is static,the cycle adaptive access division method of distant double live centers based on the voronoi diagram is been proposed.The algorithm monitors the load periodically and adjusts the access division dynamically combining the current load when the load exceeds the load threshold value.At the same time,it can monitor the cycle that is associated with the current load of the data center.It shortens the cycle when the load is not normal to feedback the current load condition in time.