Re: [Streaming] Datum compression

Radosław Smogura <rsmogura@softperience.eu> writes:
> I think about following functionality to add to streaming. In some way earlier 
> or later soemone will add possibility for gzip communication. As I try to make 
> streaming, I wonder if it is possible to change TOAST compression to 
> GZIP/zLib, currently is LZMA. 

> I want to make this: if user want to use compression during communication, 
> server will be able to send compressed datum, instead of doing recompression. 
> GZIP is actually quite popular, and skipping "plain" Windows C, it's supported 
> on all driver platforms, including Java and .NET.

> What do You think about this approach.

The fact that TOAST depends on a non-gzip compressor is intentional.
The code that's there is faster than gzip, IIRC, and also there is
no problem with it possibly not being available on a particular system.
You haven't provided any justification that would overrule these
reasons.
        regards, tom lane