SolrJ Embedded

[sp...@gmx.eu]

Hi,

is it possible to use the same index in a solr webapp and additionally in a
EmbeddedSolrServer? The embbedded one would be read only.

Thank you.

Re: SolrJ Embedded

[Erick Erickson <er...@gmail.com>]

Quantify slower, does it matter? At issue is that usually
Solr spends far more time doing the search than
transmitting the query and response over HTTP. Http
is not really slow *as a protocol* in the first place.

The usual place people have problems here is when
there are a bunch of requests made over a network, a
"chatty" connection. Especially if the other end of
the connection is far away.

But in Solr's case, there's one request and one response
per search, so there's not much chat to worry about.

But regardless of all that, never, never, never make
your environment more complex than it needs to be
before you *demonstrate* that you need to. The
efficiency savings are often negligible and the cost
of maintaining the complexity are often far more than
estimated. Premature optimization and all that.

I will allow that on some rare occasions you *can* know
that you have to get complex from the start, but I can't tell
you how many times I've been *sure* I knew where the
bottleneck would be....and been wrong. Measure first, fix
second has become my mantra.

Best
Erick


On Tue, Jan 17, 2012 at 3:49 AM, Maxim Veksler <ma...@vekslers.org> wrote:
> On Tue, Jan 17, 2012 at 3:13 AM, Erick Erickson <er...@gmail.com>wrote:
>
>> I don't see why not. I'm assuming a *nix system here so when Solr
>> updated an index, any deleted files would hang around.
>>
>> But I have to ask why bother with the Embedded server in the
>> first place? You already have a Solr instance up and running,
>> why not just query that instead, perhaps using SolrJ?
>>
>>
> Wouldn't querying the Solr server using the HTTP interface be slower?
>
>
>> Best
>> Erick
>>
>> On Mon, Jan 16, 2012 at 3:00 PM,  <sp...@gmx.eu> wrote:
>> > Hi,
>> >
>> > is it possible to use the same index in a solr webapp and additionally
>> in a
>> > EmbeddedSolrServer? The embbedded one would be read only.
>> >
>> > Thank you.
>> >
>>

Re: SolrJ Embedded

[Maxim Veksler <ma...@vekslers.org>]

On Tue, Jan 17, 2012 at 3:13 AM, Erick Erickson <er...@gmail.com>wrote:

> I don't see why not. I'm assuming a *nix system here so when Solr
> updated an index, any deleted files would hang around.
>
> But I have to ask why bother with the Embedded server in the
> first place? You already have a Solr instance up and running,
> why not just query that instead, perhaps using SolrJ?
>
>
Wouldn't querying the Solr server using the HTTP interface be slower?


> Best
> Erick
>
> On Mon, Jan 16, 2012 at 3:00 PM,  <sp...@gmx.eu> wrote:
> > Hi,
> >
> > is it possible to use the same index in a solr webapp and additionally
> in a
> > EmbeddedSolrServer? The embbedded one would be read only.
> >
> > Thank you.
> >
>

Re: SolrJ Embedded

[Erick Erickson <er...@gmail.com>]

I don't see why not. I'm assuming a *nix system here so when Solr
updated an index, any deleted files would hang around.

But I have to ask why bother with the Embedded server in the
first place? You already have a Solr instance up and running,
why not just query that instead, perhaps using SolrJ?

Best
Erick

On Mon, Jan 16, 2012 at 3:00 PM,  <sp...@gmx.eu> wrote:
> Hi,
>
> is it possible to use the same index in a solr webapp and additionally in a
> EmbeddedSolrServer? The embbedded one would be read only.
>
> Thank you.
>