We now support Optimistic Locking for insert, update and delete operations leveraging Cassandra's lightweight transaction support. Modifying statements are enhanced with IF conditions to conditionally insert and modify rows and to prevent concurrent modifications by throwing OptimisticLockingFailureException.
@Table
class Person {
@Id String id;
String firstname;
String lastname;
@Version Long version;
}
Person daenerys = template.insert(new Person("Daenerys"));
Person tmp = template.findOne(query(where("id").is(daenerys.getId())), Person.class);
daenerys.setLastname("Targaryen");
template.save(daenerys);
template.save(tmp); // throws OptimisticLockingFailureException
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