WEB SERVER ENVIRONMENT

Integrating Clustering and Load Balancing for Higher Availability and Scalability in Web Server Environment



Abstract

With the growing claims for web-based applications, cluster web servers appeared as a dependable and premier asset in internet infrastructure. Managing presentation of the cluster world broad web servers under hefty burden situation is a critical task expressly when it arrives to the advent of dynamic contents and database-driven applications. The IQRD aspires to accomplish better burden balancing with the help of demand classification, presentation isolation and dynamic residual capability estimation mechanisms. For this, a lining up form was engaged for each class of demands in each node of the cluster to supply an estimation considering the node residual capacity. This worth is utilised as a load descriptor (index) in the load balancing algorithm and furthermore utilised by the admission command mechanism.

Table of Content

ABSTRACT2

CHAPTER 01: INTRODUCTION4

I.INTRODUCTION4

A.Background of the Study5

B.Historical Development8

C.Problem Statement9

D.Aims and Objectives10

E.Thesis Statement10

F.Limitation of the Research11

G.Assumptions & Limitation12

H.Theoretical Framework13

II.RELATED WORK14

A.Web-switch setting14

REFERENCES17

CHAPTER 01: INTRODUCTION

INTRODUCTION

The enormous growth of the internet industry introduced web-based applications as popular demanding programs. Users are becoming increasingly reliant on the web for their daily activities such as electronic commerce, on-line banking, stock trading, reservations and product merchandising. So enterprise service providers are increasingly motivated to move applications to the web infrastructure. The substantial changes, transformed the web from a communication and browsing infrastructure to a medium for conducting business and selling services. These new types of application require more web server processing resources. (Villela 2004)Therefore the performance of a web server system plays an important role in success of many internet related companies. The web server may receives a huge number of client connections in a very short period of time which would cause network congestion, rise in response time, and even turn the operation of the web server to an unstable situation. Long response delays would frustrate users' interest in interaction with the web server and they may give up browsing the web site. For e-commerce web sites, such degradation is especially harmful, as it may lead to significant loss in revenue and dismay in customer visits. Because of this, users' demands for faster web-based applications need special attention from the web site designers. (Mosberger 2000)

Background of the Study

Any single server can easily become a bottleneck and a single point of failure. In addition, a single server machine can only handle a limited amount of requests and cannot scale up with demand. The best way to cope with growing processing demands for web servers is by adding more hardware resources instead of completely replacing one server with a faster one. When the number of clients grows exponentially, the cluster web server is the leading architecture in building powerful web sites. A cluster web server consists of a front-end node, called the web-switch (Fig. 1), which is responsible for dispatching requests, and several web servers for processing requests. Due to various technical and control issues regarding the management of a cluster web server, load balancing algorithms and the admission controls ...