The funny thing is that from a purely technological point of view, Java (even the 5-year-old Java 8 and certainly recent versions) is far ahead of most other stuff hyped on HN (as well as less hyped stuff). Virtually no other platform comes close to that combination of state-of-the-art optimizing compilers, state-of-the-art GCs, and low-overhead in-production profiling/monitoring/management. And much of the cutting-edge development and technological breakthroughs on these matters continues to take place in Java (disclosure: I work on OpenJDK full-time). Just in the past few years we've seen the release of open-source GCs with less than 2ms worst-case pause times on terabytes of heap (ZGC and Shenandoah), a revolution in optimizing compilers (Graal/Truffle), and there's an upcoming release to streaming access to low-overhead deep profiling (JFR). So Java is not only the safe choice for serious server-side software; it's also the bleeding edge.