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What are some good Java books that focus on high performance systems and large scale software design?

• Please, advise me with some Java books focused on high performance systems (Building efficient search engineers or alike) both for one one and systems with massive parallelism large scale projects - (What would be Java analogue of Lacos Large Scale C++ Software design). What are good books on multithreading, debugging, and unit testing?

• Answer:

  There is not a big enough market for a book to be profitable in an area that specific, specially not compared with the money an expert can make by exploiting that knowledge. I have been in Java for long and I know no single book about (current) massive parallelism in Java. In my background what helped me get a grip on high concurrency, deadlock, parallelism and so is a mixture of several source of information: - My professor on Java concurrency at the University in 2001 who graded me with a 10 (A+) although possibly I did not deserve it, ironically he is an expert at C which sent a message about where is really the concurrency getting executed. - Scholar papers on PDF format you can find in google about PhDs making tests with different JVMs and different OS. - General blogs and Q&A. - IBM and Oracle Weblogic articles and blogs about high performance in distributed environments. - My own tests in distributed scenarios. - Debugging and introspection tools (agents) that allow you to monitor performance not only in one machine but in a cluster of JVMs running in different servers. - Meeting the guys who designed it when they visited the city for speeches and conferences (Spain is a warm place so from time to time conferences about Java takes place around). When they are passing the "canapes" around make sure to interrogate the guru visiting your city ^-^!. And so on... as an example of what I mean if you Google (as of 18/04/2014) the following search "multicore cpus and jvm" you will find several scholar papers on the subject, a couple of stackoverflow entries, some IBM and Oracle entries and so on... the question is how to tell apart the useful information from the uncultured gibberish... you need a true expert for that and we don't fell like writing a book only 500 to 1000 could have a use for.