TransactionManager tm = cache.getConfiguration().getRuntimeConfig().getTransactionManager();
tm.begin();
Transaction tx = tm.getTransaction();
UpdateTimestampsSynchronization sync = new UpdateTimestampsSynchronization(ENTITY_TYPE_FQN, cache, tm);
tx.registerSynchronization(sync);
Fqn fqn = Fqn.fromRelativeFqn(REGION_PREFIX_FQN, ENTITY_TYPE_FQN);
fqn = Fqn.fromRelativeElements(fqn, "1");
cache.put(fqn, ITEM, "value");