Bob Palowoda

A member of the Philip Greenspun's Homepage community since May 4, 1999

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May 4, 1999, on Application Servers:
I always enjoy reading Mr. Greenspun pragmatic and realistic views of developing web database sites. His thoughtful comments push developers to think. However in terms of measuring scalablity with web applications I think he is giving the public at large a misconceoption of what web scalibity means with respect to price performance and application servers. Before I make any comments on webserver scalibity lets say that I look at it form the kernel up as opposed to Mr. Greenspun looks at it from the higher level down. And for information purposes, yes I do work for Sun. Frist on of the major factors that affect application transaction throughput of a server based on your database backend is if your rdbms is correctly thread modeled to the OS, i.e. Oracle is not a truely threaded rdbms in the two model smp architecture. Informix is a more true threaded database. However one has to match the user thread level architecture such as java or tcl or php3 or perl to the underlying OS. ...