“As with other recent waves of innovation (Web 2.0 and cloud computing, for example) there is no single definition of what the term “real-time Web” means. As a result, it is used as a catch-all phrase for a number of developments underway. At this point, we can identify that the real-time Web…”
by Ken Fromm @frommww.
I didn’t realise what a complicated topic this is until this week when an investor completely junked our pricing model with one simple graph. So this weekend I’ve been researching the subject. There are some highly counterintuitive ideas under discussion, which suggests the possibility that there might be a good opportunity to price using an alternative model to the traditional: per user with volume discount.
This is an interesting discussion on approaches for full text searching on massive data sets such as real time web applications; Twitter is the example.
It’s a little more than just a list; here is a fairly good high level overview of current DHT offerings compared form the authors context.
Update: Here is a more up to date comparison prepared by Tony Negrin (Yahoo) after the recent noSQL 09 conference. It includes some indication of maturity and momentum.