public interface IdGenerator extends DistributedObject
long) in a cluster. In theory a
IAtomicLong.incrementAndGet()could be used to provide the same functionality. The big difference is that the incrementAndGet requires one or more remote calls for every invocation and therefor is a performance and scalability bottleneck. The IdGenerator uses an IAtomicLong under the hood, but instead of doing remote call for every call to
newId(), it does it less frequently. It checks out a chunk, e.g. 1..1000 and as long as it has not yet consumed all the ids in its chunk, then no remote call is done. It can be that ids generated by different cluster members will get out of order because each member will get its own chunk. It can be that member 1 has chunk 1..1000 and member 2 has 1001..2000. Therefore, member 2 will automatically have ids that are out of order with the ids generated by member 1.
|Modifier and Type||Method and Description|
Try to initialize this IdGenerator instance with the given id.
Generates and returns a cluster-wide unique id.
boolean init(long id)
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