How Google makes Google(+) fast
Google+ is certainly fast, I just wish it were quicker about showing me valid/updated state.<p>I've never used any website where the data I was seeing was so obviously out of date across the board as it is on Google+.  Yes, eventually it coalesces towards correctness, but I don't think this model works well for things like notifications and such.<p>"Oh look I have a new notification... oh wait, no I don't, that's from like an hour ago and I already looked at it."<p>Speed <i>is</i> a feature, but so is not making your users think your software is just plain buggy and too much local state caching is basically indistinguishable from a bug for many users.. and in many contexts it can also be annoying even for those who know roughly why it is happening.