Server Congestion
An important scaling problem for the Internet is server congestion. The antidote is a technique referred to as server caching, which is the replication of content at geographically dispersed places. Instead of millions of users converging on a single server, content of a popular server is replicated and accessed by users elsewhere. Figure 8-1 illustrates the concept of server caching, with the original cache being replicated via the Internet and the Access Network. The user accesses the server cache through the Access Network.
The following list details the basic requirements of server caching:
The original server and the caching server have the same content.
The process of synchronizing the databases doesn't generate excessive ...
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