Must-haves for future grid-computing
I’ve been test-flying a few datagrid/datafabric products lately and had a nice opportunity to try them out on gig-ethernet and infiniband. The thing I noticed with all distributed-data systems is that synchronous-replication is always a bottleneck, because you’re forced to wait on the replication-ack before proceeding with the next operation. Because of this, gigabit-ethernet’s latency puts a ~5k ceiling on any throughput rates you can achieve.
For any grid vendor it’s crucial to rollout modern, ultra-low latency interconnect support then, as its latency characteristics blow away any Gig-E numbers. For real-time price publishers, for algo-trading, latency is the key issue, more than throughput.

