osx sierra intellij spring boot jdk 8 slow startup

My spring boot applications startup time was very long with jdk 8. There is no problem with jdk 9. A simple application without any code startup time was over 15 seconds. Now it starts under 5 seconds. I find solution in stackoverflow :

I solved the problem by adding my Mac hostname (i.e. Macbook.local, or whatever your Mac is called) on the /etc/hosts file mapped to the 127.0.0.1 address as well as the ::1 like this:

127.0.0.1   localhost mbpro.local
::1         localhost mbpro.local

To learn your hostname, type hostname in the console.

https://stackoverflow.com/questions/39636792/jvm-takes-a-long-time-to-resolve-ip-address-for-localhost