11.4. High availability for the ISPCompany example
ISPCompany's ISP division offers its small company clients a very successful static Web-page-serving service, by using the marketing slogan “Anyone in the world, day or night, can find out about your company and its services.” By guaranteeing the 24x7 availability, they have differentiated themselves from the competition and have been able to attract a number of smaller businesses to using this service. The real value to ISPCompany is that these clients become excellent candidates for outsourcing a dynamic Web-page-serving environment that is even more profitable.
The design in Figure 11-5 is their implementation of the Linux virtual server (LVS) cluster technology. Most of this design is a pretty ...
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