On Apr 12, 2008, at 12:06, Søren Hilmer wrote:
Hi
Have you read Chris' response about letting the view engine call the
indexer,
as it has the information needed for the indexer? As I understand
the idea,
it will essentially keep the fulltext indexer and the views in sync.
I like this idea and I believe the code for the indexer would be
much simpler
and efficient.
Also as the shift goes towards indexing views and not documents, it
makes
sense that it is the View engine that triggers the indexer, right?
The only problem here is that views are changed, when they are being
queried and not when documents are added. So you could end up with a
lot of not-indexed data because your view hasn't been queried. That
can be worked around, but I don't think it makes things any easier :)
The design of the update notification is intentionally simple. We
expect the clients (the Indexer in this case) to be smart. We believe
that this makes the server code is more robust in that way.
I have to study the View engine, if I am to provide any code for
this, though
(provided consensus blows in this direction).
Have fun
Søren
On Friday 11 April 2008 13:26, Jan Lehnardt wrote:
On Apr 11, 2008, at 08:55, Søren Hilmer wrote:
Hi Jan
It certainly would simplify configuration, allthough the
DbUpdateNotificationProcess setting ought to be retained as it is
potentially usefull for other stuff than indexing (can you have more
than
one of these, setup?)
No, the update searcher will stay! :-)
I am also worried about responsetimes for searching, potentially the
indexing can take considerable time. With the current approach
indexing
can be done off peak hours and only searching is done at prime time.
Right, if you want to be conservative with resources, you might want
togo
with my approach at the expense of possibly higher response times the
first time things are searched for (as it is with views). I just
wanted to make
available my idea that fulltext indexing could be modelled after how
views
work, in case this is useful for a specific scenario.
Cheers
Jan
--
Have fun
Søren
--
Søren Hilmer, M.Sc., M.Crypt.
wideTrail Phone: +45 25481225
Pilevænget 41 Email: [EMAIL PROTECTED]
DK-8961 Allingåbro Web: www.widetrail.dk
On Thu, April 10, 2008 23:32, Jan Lehnardt wrote:
Heya,
while thinking more about the fulltext implementation, I began to
wonder why we don't model it after the view engine.
At the moment, we have an Indexer waiting for update notifications
and
polling CouchDB for changes and a separate mechanism to register a
fulltext query Searcher, that looks up things in the index.
My proposed architectural change would be to trigger the Indexer
from
the Searcher module when a request comes in, just like views work.
This would delay the creation of fulltext indexes until they are
actually needed.
The possible drawback though is, that when building the fulltext
index
is rather slow, old-style pre-calculation might be more feasible.
View
deal with that by requiring frequent requests (possibly cron-ed).
This is not a proposal or anything, just a thought I wanted to
share
with those who work on fulltext integration.
If you have any input on this, please let us know ;)
Cheers
Jan
--
--
Søren Hilmer, M.Sc., M.Crypt.
wideTrail Phone: +45 25481225
Pilevænget 41 Email: [EMAIL PROTECTED]
DK-8961 Allingåbro Web: www.widetrail.dk
