On Tue, Oct 15, 2013 at 10:09:05AM -0400, Robert Haas wrote:
> On Tue, Oct 15, 2013 at 9:17 AM, Andres Freund <andres@2ndquadrant.com> wrote:
> User: So, what's new in PostgreSQL 9.4?
> Hacker: Well, now we have logical replication!
> User: Why is that cool?
> Hacker: Well, streaming replication is awesome for HA, but it has
> significant limitations. And trigger-based systems are very mature,
> but the overhead is high and their lack of core integration makes them
> hard to use. With this technology, you can build systems that will
> replicate individual tables or even parts of tables, multi-master
> systems, and lots of other cool stuff.
> User: Wow, that sounds great. How do I use it?
> Hacker: Well, first you write an output plugin in C using a special API.
> User: Hey, do you know whether the MongoDB guys came to this conference?
>
> Let's try that again.
>
> User: Wow, that sounds great. How do I use it?
> Hacker: Well, currently, the output gets dumped as a series of text
> files that are designed to be parsed using a scripting language. We
> have sample parsers written in Perl and Python that you can use as-is
> or hack up to meet your needs.
My version:
Hacker: the output gets dumped as a series of JSON files. We have
docs for this rev of the format and examples of consumers in Perl and
Python you can use as-is or hack up to meet your needs.
Cheers,
David.
--
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