Openstack Contract: Consists of TokenManager and Scheduled Renewer. TokenManageris responsible for managing multiple clusters token. The key concept is using ThreadPool's core thread to store and retrieve Token. It exposes three public methods and a cluster specific token sharing storage. ensureOpen(...
The concept of rollback rules is important: they enable you to specify which exceptions (and throwables) should cause automatic rollback. You specify this declaratively, in configuration, not in Java code. So, although you can still call setRollbackOnly() on the TransactionStatus object to roll...
That means aThreadInstance.join() will block the thread in which this method is called until 'aThreadInstance' fishes executing. Following simple example demonstrates the concept. public class ThreadJoinExample { public static void main (String[] args) throws InterruptedException { Task task1 = ne...
What is Correctness in thread safety? At the heart of any reasonable definition of thread safety is the concept of correctness. So, before understanding the thread-safety we should understand first, this “correctness“. Correctness means that a class conforms to its specification. You will agree ...