On Jul 18, 2007, at 0:50, Jan Miczaika wrote:
Regex deletes on the keys may be used to delete interconnected
groups of keys, but I think it is not very efficient. Lets assume
we have two sets of data for a DVD: details and actors. The title
of a DVD changes, I want to update all relevant data and not have
stale titles on the plattform. To delete all connections with one
DVD I would have to:
- delete the key for details (probably dvd_1234_details) - easy
- delete the keys for all related actors - this is harder. encode
all dvd_ids in the actor keys? Iterate the actors and run a regex
for each one?
Point 2 multiplies for each loosely related keys. The direct ones
are easy to hit, the others not so.
I think this makes sense, but it seems like you're shifting the
problem over to tagging. Now you have to tag James Hong with every
role he's been involved in in case the DVD availability of one of
them changes. That seems like it would be just a different expensive.
It seems like you could do the same thing just as easily in your app
at that point. e.g. if I'm invalidating a movie, I probably have an
actor list and can just asynchronously fire off concurrent deletions
to all the related actors and stuff (or better, just asynchronously
send updated information).
--
Dustin Sallings
