# Experience
with a handy ide such idea (under study can be, for example http://www.jiangxinlingdu.com/idea/2019/07/23/idea-debug.html
http://www.jiangxinlingdu.com/idea/2019/07/19/idea.html
http://www.jiangxinlingdu.com/idea/2019/07/29/idea-201902.html
tool for studying skilled)
Plus patience, sometimes I had this feeling, look netty such as memory management when, in fact I have long read, but always feel very hard, has not led to understand, and suddenly that day I decided to put your research next, suddenly found suddenly feeling can also accept a large portion of progress, in fact, what I did not do that myself determined to be dry, then I alone debugging simulation of the branch, the chiefs of all the complete process about 10 times to master, in order to write article debugging addition of five times.
http://www.jiangxinlingdu.com/netty/2019/08/11/netty-bytebuf-allocator.html
Summary: 1. familiar tools such as IDEA
2. believe they will be able to grasp, determined to overcome their own, do not always feel particularly complex, as has been not grasp, calculate the time it may take more
3. repeated testing, to simulate various branches some source code is complex because too many branches we try to simulate multi-branch so full grasp of some
4 see more technical articles written by someone else
5. the third step is then repeated as many times
6. require summary notes or record the output of blog , it's only a complete cycle