10-04-2017, 08:28 PM
No single computer can function as a WW server in the present world as the demand for service in the WW is increasing rapidly. A single computer will be overwhelmed by the astounding number of service requests. The modern approach to building WW servers is to maintain a cluster of servers that will seem to the outside world as a single computer. This approach will be scalable and robust. To design such a cluster of computers, the designer must face the question of building a filesystem to distribute the files between the servers. a dynamic system for distributing files among the cluster members is proposed. A number of copies of the same file will be maintained on different cluster members. The number of copies of each file will be varied according to the demand statistics of the file. Put in other terms, a "popular" file will have multiple copies of itself on the server compared to the less demanded ones. The system is called Liquid file system because the files "flow" from one cluster node to the other and generally the file population is liquid.
The two major parts are:
-Regular WW server added with
-file demand statistics gathering
-ability to redircet clients to other cluster members when overloaded or it doesn't have a copy of the requested file
-LFS Protocol Handler :
-communication between the cluster nodes is handled by this and also their operation is synchronized.
Get the report here:
http://cs.technion.ac.il/Labs/Lccn/proje.../project8/