Heinz Kabutz, John Green Thread Safety with Phaser, Stamped Lock and Var Handle

Every major Java version introduces a new and better way of managing state. Java 7 gave us Phaser as a replacement for CountDownLatch and CyclicBarrier. Hardly any programmers know how it works, even though we are now on Java 11 LTS. Java 8 gave us StampedLock, useful as a lighter read lock when building concurrent classes. Again, not very widely known, but lots of use cases. Java 9, 10, 11 introduced VarHandle as an escape latch for the Unsafe addicts. In this talk, Heinz and John will show all three concepts and explain when each should be used.