Java Volatile

The Java volatile keyword can be applied to Java variable declarations to force the Java VM to always read the variable value directly from main memory, and always write changes to the variable directly back to main memory immediately.

Chapters 0:00 Java volatile introduction 0:41 Non-volatile variable visibility problems 2:27 Java volatile visibility guarantee 5:30 Instruction reordering could break the Java volatile visibility guarantee 12:33 Java volatile happens before guarantee 15:03 Java volatile performance overhead 15:56 Java volatile is not always enough

Java Memory Model - JSR 133 https://www.cs.umd.edu/~pugh/java/memoryModel/jsr-133-faq.html

Java volatile tutorial - textual: http://tutorials.jenkov.com/java-concurrency/volatile.html

Java synchronized tutorial - textual / video: http://tutorials.jenkov.com/java-concurrency/synchronized.html https://www.youtube.com/watch?v=eKWjfZ-TUdo

Java concurrency tutorial - textual: http://tutorials.jenkov.com/java-concurrency/index.html

Java concurrency tutorial - playlist: https://www.youtube.com/playlist?list=PLL8woMHwr36EDxjUoCzboZjedsnhLP1j4 ... https://www.youtube.com/watch?v=nhYIEqt-jvY