Research On Real-Time Response About Heterogeneous Distributed System

In order to find the reasons leading to the system response delay and solve the delay problem in heterogeneous distributed system, it is valuable to users’ experience and system performance.This paper focuses the problem from the whole to the local, and then gives solutions and methods to improve the system response ability. Consistent hash algorithm and redundancy policy are presented in system storage expansion. And in some circumstance, distribute message queue performs much better than distribute transaction. And it is proved in this paper. What else, the traditional lock strategy cost too much system resources and increases the system response time. Using timestamp, copy-on-write and multiple version concurrency control technology can reduce response time prominently. Besides, it enhances the system availability. Through simulation experiment and theoretical deduction, it shows that Greedy-Dual and Bloom Filter algorithm improve the system cache ability a lot. In data storage aspect, this paper presents a policy that data can be stored in different performance disk devices basing on visits. In general, these methods or policies improve the system response ability in some extent.