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From Pranav Prakash <pra...@gmail.com>
Subject Re: Solr Incremental Indexing
Date Mon, 01 Aug 2011 05:18:47 GMT
There could be multiple ways of getting this done, and the exact one depends
a lot on factors like - what system are you using? How realtime the change
has to be reflected back into the system? How is the indexing/replication
done?

Usually, in cases where the tolerance is about 6hrs (i.e. your DB change
wont be reflected in Solr Index for as high as 6hrs), you can set up a cron
job to be triggered every 6 hrs. It will see all the changes made between
that time, and update Index and commit it.

In cases, where a more real time requirement, there could be a trigger in
the application (and not at the db level), which would fork a process to
update Solr about this change by means of delayed task. If using this
approach, it is suggested to use autocommit every N documents, N could be
anything depending your app.


*Pranav Prakash*

"temet nosce"

Twitter <http://twitter.com/pranavprakash> | Blog <http://blog.myblive.com> |
Google <http://www.google.com/profiles/pranny>


On Sun, Jul 31, 2011 at 02:32, Alexei Martchenko <
alexei@superdownloads.com.br> wrote:

> I always have a field in my databases called datelastmodified, so whenever
> I
> update that record, i set it to getdate() - mssql func - and then get all
> latest records order by that field.
>
> 2011/7/29 Mohammed Lateef Hussain <mohammedlateefhssn@gmail.com>
>
> > Hi
> >
> > Need some help in Solr incremental indexing approch.
> >
> > I have built my Solr index using SolrJ API and now want to update the
> index
> > whenever any changes has been made in
> > database. My requirement is not to use DB triggers to call any update
> > events.
> >
> > I want to update my index on the fly whenever my application updates any
> > record in database.
> >
> > Note: My indexing logic to get the required data from DB is some what
> > complex and involves many tables.
> >
> > Please suggest me how can I proceed here.
> >
> > Thanks
> > Lateef
> >
>
>
>
> --
>
> *Alexei Martchenko* | *CEO* | Superdownloads
> alexei@superdownloads.com.br | alexei@martchenko.com.br | (11)
> 5083.1018/5080.3535/5080.3533
>

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