| From: | Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com> |
|---|---|
| To: | Konstantin Knizhnik <k(dot)knizhnik(at)postgrespro(dot)ru>, Robbie Harwood <rharwood(at)redhat(dot)com>, Thomas Munro <thomas(dot)munro(at)enterprisedb(dot)com> |
| Cc: | Grigory Smolkin <g(dot)smolkin(at)postgrespro(dot)ru>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: libpq compression |
| Date: | 2019-02-15 12:42:52 |
| Message-ID: | ebc8ebd2-1a3b-43f7-d1a1-6e8b9ed65e62@2ndquadrant.com |
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| Lists: | pgsql-hackers |
On 2018-06-19 09:54, Konstantin Knizhnik wrote:
> The main drawback of streaming compression is that you can not
> decompress some particular message without decompression of all previous
> messages.
It seems this would have an adverse effect on protocol-aware connection
proxies: They would have to uncompress everything coming in and
recompress everything going out.
The alternative of compressing each packet individually would work much
better: A connection proxy could peek into the packet header and only
uncompress the (few, small) packets that it needs for state and routing.
--
Peter Eisentraut http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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