MT,
Many thanks for the prompt reply. I read into the document, however, didn't find the answer to my question as following,
3. If using sockets, jdk 1.4 has only socket for TCP and UDP. But when the apache and tomcat are deployed in the same machine, isn't it an overhead to go down to the lower layers when sending data stream, and go upwards when receiving data?
Depends on the operating system itself.
The smart one will never go down to the physical network layer for local communications.
MT.
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