根实体及其集合的不同缓存并发策略(使用ehcache休眠)?

如果您修改 tickets 给定的 Customer 在别的地方,是的。你为什么不测试这个?让我们假设 Cutomer#1 有 Ticket#1 和 Ticket#2 在其 车票 收集。我运行了以下代码:

// loading in first session
Session session1 = HibernateUtil.getSession();
Transaction tx1 = session1.beginTransaction();
Customer c1 = (Customer) session1.load(Customer.class, 1L); // loads from db and puts in cache
for (Ticket ticket : c1.getTickets()) { // caches q2742145.Customer.tickets#1
    System.out.println(ticket);
}
Ticket ticket = (Ticket) session1.load(Ticket.class, 1L); // doesn't hit the db
ticket.setName("foo"); // do some change on Ticket#1
session1.save(ticket);
tx1.commit(); // Ticket#1 gets updated in the db and the cached association invalidated

// loading in second session
Session session2 = HibernateUtil.getSession();
Transaction tx2 = session2.beginTransaction();
Customer c2 = (Customer) session2.load(Customer.class, 1L); // hits the cache
Set<Ticket> tickets = c2.getTickets();
for (Ticket ticket2 : tickets) { // reloads tickets from db
    System.out.println(ticket2); 
}
tx2.commit();

它显示了门票的收集得到“刷新”。