Re: Storing images as BYTEA or large objects

Koen Vermeer wrote:
> On Wed, 2008-02-13 at 09:35 +0000, Peter Wilson wrote:
>
>> My preference : if I don't need the file-like interface to large objects
>> I'd use BYTEA every time.
>>
>
> Right, so that basically means that when 'large objects' are files,
> which should be saved and restored as a whole, it may be more natural to
> use the large objects. I guess that applies to some uses of media
> storage (music, photos, video).
>
No - I meant the Postgres large object interface allows you to read and
write sections of a
large object. It provides a seek/read/write interface.

If you're only going to read or write the whole contents as a single
block then use BYTEA. In
my case I store uploaded images as BYTEA - I only every need to
read/write the image as a whole.
If you were dealing with very large images/music/video in a web
environment then I could see a
web application wanting to read a chunk - write to the web client - read
next chunk etc and thus
avoid the overhead of the entire contents being in memory at one time.
That probably doesn't
help with upload though.

Pete
--
http://www.whitebeam.org - JavaScript web application server.
http://www.yellowhawk.co.uk
> The large-objects-are-actually-files thing applies to my situation, so
> unless there is some 'large objects are / will be deprecated' argument,
> I guess I stick with large objects.
>
> Thanks!
>
> Koen
>
>
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