Configuration: SERVER-EMULATION

The server emulation section in the system configuration is useful for experimental setups. It has been implemented for testing caching algorithms, which is represented by the test-caching-proxy system mode. That system mode is achieved by starting the server with the option --tc. Here is an overview:

<system type="test-caching-proxy">
  <server-emulation>
    <movies value="100" />
    <popularity value="ZIPF" />
  <server-emulation/>
</system>

The options mean specifically:

<movies> is an integer value that indicates how many different movies the server emulation should emulate.
<popularity> is an enumeration value that indicates how the popularity distribution of the movies should be determined. It can so far have the value CYCLIC, ZIPF, and UNIFIED. The value UNIFIED will not assign any randomness to the movies. Instead, movies will be returned cyclically, starting with 0, without any change of their order. ZIPF will assign popularity according to the Zipf distribution, the movie 0 being the most popular one. UNIFIED will assign identicial popularities to the movies, and draw random ones on request.

Generated on Sun Mar 6 13:36:23 2005 for Komssys by

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