Large character attributes

[Chuan Li <li...@gmail.com>]

Hi guys,
I have the assignment to save/read large character attribute ( ~ 10 MB) on
your server. The system has about about hundred users at the same moment.
This question is that,  do you think it is practical to do so? How does the
server deal with large character attributes, are they loaded in the memory
first or simply streamed?

Thanks for your kind answer!

Chuan

Re: Large character attributes

[Chuan Li <li...@gmail.com>]

Hi,
I managed to store few MB strings. Though I realized that, server string has
a max size of 64KB, due to a writeUTF() call in ObjectOutputStream. So I let
it use binary attribute. Still when the size goes larger, it eventually
crashed my unit tests (after fixes in MINA SSL buffer). I have no clue of
that.

Regards,
  Chuan
On Wed, Jan 14, 2009 at 1:29 PM, Emmanuel Lecharny <el...@gmail.com>wrote:

> Hi,
>
> right now, they are temporarily cached, but the entries are stored on the
> disk.
>
> We have rewrote the API to manage binary and string values, with some
> extension points for streamed values (both binary and string), but
> this has not been implemented yet.
>
> Now, depending on what you do, you can still manage big values. It's
> just a matter of limitating the number of entries you cache (this is
> configurable), and to avoid indexing those attributes.
>
> You also have to augment the JVM dedicated memory.
>
> Hope it helps.
>
> On Wed, Jan 14, 2009 at 1:18 PM, Chuan Li <li...@gmail.com> wrote:
> > Hi guys,
> > I have the assignment to save/read large character attribute ( ~ 10 MB)
> on
> > your server. The system has about about hundred users at the same moment.
> > This question is that,  do you think it is practical to do so? How does
> the
> > server deal with large character attributes, are they loaded in the
> memory
> > first or simply streamed?
> >
> > Thanks for your kind answer!
> >
> > Chuan
> >
>
>
>
> --
> Regards,
> Cordialement,
> Emmanuel Lécharny
> www.iktek.com
>

Re: Large character attributes

[Emmanuel Lecharny <el...@gmail.com>]

Hi,

right now, they are temporarily cached, but the entries are stored on the disk.

We have rewrote the API to manage binary and string values, with some
extension points for streamed values (both binary and string), but
this has not been implemented yet.

Now, depending on what you do, you can still manage big values. It's
just a matter of limitating the number of entries you cache (this is
configurable), and to avoid indexing those attributes.

You also have to augment the JVM dedicated memory.

Hope it helps.

On Wed, Jan 14, 2009 at 1:18 PM, Chuan Li <li...@gmail.com> wrote:
> Hi guys,
> I have the assignment to save/read large character attribute ( ~ 10 MB) on
> your server. The system has about about hundred users at the same moment.
> This question is that,  do you think it is practical to do so? How does the
> server deal with large character attributes, are they loaded in the memory
> first or simply streamed?
>
> Thanks for your kind answer!
>
> Chuan
>



-- 
Regards,
Cordialement,
Emmanuel Lécharny
www.iktek.com