Integration

Hi,

We would like to add the partition id into our database backing store.

We would like to do this so that we can re-load only the partion that has been lost if we recieve a PARTITION_LOST PartitionEvent.

The only way that we can see to get thet partition id from a key is to get the KeyPartitioningStrategy from the PartitionedService in our CahceStore.store() method.

Something like this:


void store(Object key, Object value) {

PartitionedService service = (PartitionedService) CacheFactory.getService("distributed-service");

KeyPartitioningStrategy kps = service.getKeyPartitioningStrategy();

int partition = kps.getKeyPartition(key);

jdbc.update("insert into backing_store (key, partition, value) values (?,?,?)", key, partition, value);

}

Is doing this safe? Is there any other way that this could be implemented? Is there a large overhead in calling back to the KeyPartitioningStrategy within CahceStore.store()? (We are using write-through to the backing store so don't want the store() call to be slow.)

Thanks,
Alex