> The only requirement is that if F is the number of unreachable nodes you wish to be able to tolerate, then your minimum cluster size is 2*F + 1.
> Currently no other data store that I'm aware of offers this flexibility.
It isn't true. There're plenty of storages with same strong consistency model (tolerates F failures of 2F+1 nodes), among them are Cassandra with lightweight transactions, Riak with consistent buckets, CockroachDB and ZooKeeper.
> However, GoshawkDB has a radically different architecture to most databases and its object-store design means that contention on objects can be dramatically reduced, allowing the performance impact of strong-serializability to be minimised.
Can you please describe the algorithm that you use for implementing distributed transactions?
> just three network delays occur (and one fsync) before the outcome of the transaction is known to that node
3 round trips for per transaction is the result which is very similar to the Yabandeh-style transaction, see the Cockroach's blog for details - http://www.cockroachlabs.com/blog/how-cockroachdb-distribute...
Do you use the same approach?
It isn't true. There're plenty of storages with same strong consistency model (tolerates F failures of 2F+1 nodes), among them are Cassandra with lightweight transactions, Riak with consistent buckets, CockroachDB and ZooKeeper.
> However, GoshawkDB has a radically different architecture to most databases and its object-store design means that contention on objects can be dramatically reduced, allowing the performance impact of strong-serializability to be minimised.
Can you please describe the algorithm that you use for implementing distributed transactions?
> just three network delays occur (and one fsync) before the outcome of the transaction is known to that node
3 round trips for per transaction is the result which is very similar to the Yabandeh-style transaction, see the Cockroach's blog for details - http://www.cockroachlabs.com/blog/how-cockroachdb-distribute...
Do you use the same approach?