Research On Scalable WEB Cluster Service Based On Linux

With the rapid development of Internet now, no matter in enterprise's network is or like Internet in WAN , The development of portfolio of the network has gone beyond the most optimistic estimation in the past, especially the key part of each network, The traffic and calculation are big in intensity, make the single machine unable to be born at all, And how realize that rational portfolio is distributed among a lot of network equipments of finishing same function, It is unlikely to make present a set of equipment too busy , but other equipment have not been full utilized, On the issue that have become one, cluster service initiate and challenge , give and publish a satisfactory schemeCluster services can be divided into high availability cluster services and high performance cluster service , High availability is directed against the incessant communication service in the network of the system mainly, The takeover mechanism in the software and hardware realizes the utilizing that resource can; High performance can offer stronger function in serving to the system mainly , For instance larger handling capacity, the lower delayed , good load balancing mechanism ,etc.. Thesis here is about deeply research of scalable WEB cluster serviceThe scalable cluster service system is to have expanded characteristics at first, namely have strong service functions and have high performance; Have high availability is namely can keep incessant characteristic of service while there has failed node. The scalability guaranteeing in case of improving systematic function generally, Offer cluster service of high and available system.The achievement of my research: Structure scalable WEB cluster services under Linux. Study mainly from: 1) Distributed Packet Rewrite-This distributed method to request transaction, allow all host computer participate in redirection; and then reach 2) MPLS ( Multiprotocol Label Switching) technology -Can exchange realizing because of content-based routing, client-server affinity, client-specific service differentiation, server load balancing function only through L-7web in MPLS network, provided at a much improved price-to-performance ratio. Implement a mechanism of scalable distribute packets . Finally 3) Get with chaining converge and connect splicing methods optimize scalable cluster service.