关于 Java 并发常见面试题总结（中）的“如何保证变量的可见性？”问题的解答详解

Hello, Guide. The problem is shown in the following figure. According to many authoritative documents and articles, I believe that the Java volatile keyword guarantees visibility based on the bus sniffing and MESI cache consistency protocol. Therefore, I believe that it does not always access the main memory.