Looked at the first one, and that's in a game setting? And they test 600 ms?? edit: The second one is more useful IMO. It's hard to get under 100 ms with a rou

Looked at the first one, and that's in a game setting? And they test 600 ms?? edit: The second one is more useful IMO. It's hard to get under 100 ms with a roundtrip, but < 300 ms should be doable, right? So you do lose the sense that you are directly manipulating data. In most cases I think that's a good trade-off. Exceptions would be things like Google docs, but that's also because it's a well made app I trust to actually sync my data without loss. Unlike most SPAs..