Revisit JVM garbage collection:

Garbage Collection (HEREAFTER referred to as GC) has many mysteries. Many programmers don’t know much about how GC programs work, so it is sometimes referred to as a “trick” or “magic”.

This book and “GC book”, the whole book is composed of “algorithm” and “implementation” two parts.

In algorithms, we will explore the principles behind G1GC (Garbage First Garbage Collection), a GC algorithm introduced in OpenJDK 7(Java 7). One of the big mysteries in G1GC is the predicted pause times for GC pause processing, which will take dozens of pages to unravel.

Representative of the G1GC data are the English papers written by ** DavidDetlefs ** et al. 13. But the paper is too esoteric to be fully understood by reading it once.

JVM mind mapping:

Take a look at the mind map before you read the manual. It will help you to read and understand the manual by sorting out the route and what you have learned before!