Excellent Netty introduction

I'm trying Netty these days and I find it very nice to work with.

I came upon this fine introduction about Netty.

java.lang.OutOfMemoryError: PermGen space problem

We had a few these days.
Came upon this nice article on how to solve them.
http://blogs.oracle.com/fkieviet/entry/how_to_fix_the_dreaded

In the meantime we just increased it.