Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Finally a book on web server performance

In general a very good high level look at web server tuning as well as network tuning. We haven't had any good references on this until now.The book isn't particularly UNIX centric, just slanted towards higher performance servers running on high availabilty UNIX platforms. NT still doesn't fit the bill and the author isn't afraid to state it. It might have been nice if the author had gone into more depth on clustering, but just the sections on specific tuning for CGI and Java make this book worth the purchase price. Especially nice is the author's stress on portable solutions over proprietary lock in solutions. Since the technology in the web arena is likely to change radically in just the next few years it hardly makes sense sacrifice portability for a slight speed increase.