2022 the most NB JVM foundation to tuning notes, thoroughly understand Alibaba P6 small case

2022 year JVM Has become Java An indispensable part of programmers , It's also Java A ladder for developers to a higher level .

We don't just need to be able to use Java Write code and make system , We should also know how to understand and analyze Java What happens inside the program after it runs , Then how to make it work better . Just like the old driver who wants to drive for many years , Just being able to drive is definitely not a good driver . Too many cars , There will always be some big and small faults . The old driver needs to know what phenomenon indicates what is wrong , What needs to be done , Otherwise, it will often break down , Affect our schedule .

But there are all kinds of JVM There is a lot of relevant information , But it is obviously difficult for everyone to systematically learn , At the same time, the technical interview of front-line large manufacturers is now JVM Knowledge is also a required subject . So today I want to share with you a comprehensive and systematic study for free JVM Notes of knowledge and experience , Include JVM Technology and memory model 、JVM Parameters and built-in tools 、GC Algorithm 、GC journal 、 Troubleshooting and analysis of memory, thread and other related problems , As well as common interview question depth analysis and other advanced methods and actual combat , It not only meets the needs of rapid and systematic learning and comprehensive mastery of knowledge , And give consideration to everyone's interview experience and counseling .

Don't bullshit , First look at the general catalogue and contents

For reasons of length , Only the contents and screenshots of each chapter are shown here , You need this JVM From getting started to tuning boutique notes, complete documents can be sent by private mail ！

One 、JVM Concept

Two 、 Explanation of class mechanism

3、 ... and 、JVM Memory area

Four 、JVM Memory model

5、 ... and 、Garbage Collet( Garbage collection )

6、 ... and 、JVM Parameters and tools

7、 ... and 、JVM performance optimization