[yazr]

Or just try and benchmark Azul VM with pause-less GCs ?!

(I have used Azul in low-latency production environments. It has pros and cons but it certainly beats re-writing the storage layer... )

[truth_seeker]

Curious to know the cons of using it, except being commercial.

[manigandham]

> except being commercial

That's the biggest, especially for when it's a Facebook company. Otherwise it works well but can be pricey.

The JVM is getting a new fully concurrent collector though called Shenandoah: https://www.google.com/search?q=shenandoah+gc

[domsj]

Not just shenandoah[1], it's also getting zgc[2], so the low latency future looks bright for the jvm.

1. https://wiki.openjdk.java.net/display/shenandoah/Main 2. https://wiki.openjdk.java.net/display/zgc/Main

[yazr]

Needs a stronger machine to be effective (more cores & more memory)

Minor configuration issues (we had a very complex environment, custom kernel, weird network stuff, JNIs)