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Asked: 2026-05-29T10:40:49+00:00

As far as I know, many nosql stores are written in java, for example

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As far as I know, many nosql stores are written in java, for example HBase, Cassandra. But according to my experience, many high performance server program are written in c/c++ (e.g. Apache, Opensips, etc.), why can such java-implementing program behave well in production use?Is it because that Java code is easy to read and maintain and distributed system implemented in java scales well?

BTW, I know that writing code in Java is sure more productive, but as someone said, implementation speed is not a question in big company, because once implemented and refactor for several rounds, the program can run very well, so the cost of time is not high for from a long term view.

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  1. Editorial Team

    If you follow the first link (Why was Cassandra written in Java) in the “Related” section on the right, you will find answers.

    Short summary:

    • It is platform independent.
    • Java code is not necessarily much slower than C/C++, sometimes even faster (see below)
    • Java has built in threading support right from the start – for any platform
    • Security/Safety (no buffer-overflows, core dumps, …)

    EDIT The “C/C++ is faster than Java by definition” myth is just that – a myth. Look at this question for a counter example.

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