Re: Order posts by most recently commented on?

[Jens Alfke]

On Feb 24, 2010, at 3:34 PM, Travis LaDuke wrote:
I need to list topics in order of when they were last replied to
(commented on) instead of when the topic was created. You know how a
forum works. I can't figure out any combination of map/reduce/list
that works. Is it possible?

You could add a "lastCommentDate" property to each topic's document,  
and update it whenever you add a comment. You'll need to resolve  
conflicts if you try to update the date but someone else just updated  
it before you did.

—Jens