The Takipi blog deals a lot with debugging related issues: http://blog.takipi.com/

Some more posts worth checking out in the JVM domain:

http://highscalability.com/blog/2015/1/7/the-ultimate-guide-...

http://www.infoq.com/articles/Advanced-Java-Debugging-Techni...

(Disclaimer: I'm from Takipi)