Reasons for Replicating Data
According to a study done by Krishna Bharat and Andrei Brodner there are several reasons why data are replicated or why mirror sites are created Load Balancing, High Availability, Multi-lingual replication, Franchises or Local versions, Database Sharing, Virtual Hosting, and Maintaining Pseudo Identities.
In load balancing, replication of data is done to decrease the servers loads. Instead of just having one server to handle all the traffic from web surfers interested in the data or content, the site is mirrored or the data replicated so that the traffic is split between two or more servers.
Data are also replicated to make them more highly available. An example of this is when data are mirrored within the same organization for geographical purposes to make them easily available.
Multi-lingual replication of data is also very common. Data translated into different languages are very useful for reaching a wider audience who all need access to the same data. Good examples of multi-lingual replication are many Canadian sites that are the same in everything except for the language of the content wherein English or French is...
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