Re: Speed up JDBC connection creation on 9.0+

On 19/04/14 11:28, Sehrope Sarkuni wrote:
> I submitted a pull request[1] that speeds up connection creation when
> connection to a 9.0+ database. The idea is that if you instruct the
> driver in advance that the remote server is 9.0+ then it can send the
> "application_data" and "extra_float_digits" parameters as part of the
> StartupMessage rather than in separate "SET ..." statements
> afterwards. This saves a couple of round trips when creating a new
> JDBC connection.
>
> It probably won't make much difference for most people as if you're
> using a connection pool the startup cost only happens once but it does
> help a little bit.
>
> For lack of a better name I've called the new boolean connection
> property "isModernServer". Feel free to suggest a better name.
>
> Thinking about it a bit more, if 8.4 is going to be EOL this year then
> would it make more sense to skip this idea and just wait till it's
> gone?
>
> At that point we could have newer versions the JDBC driver (say a 9.4
> release) assume the remote server is 9.0+ and not even bother with the
> additional connection property.
>
> We could even do the reverse and have a property instruct the driver
> that the server is <9.0 so it doesn't send the application_name
> property in the StartupMessage. Anyone upgrading to the latest driver
> but using an older (EOLed) database would have to add the extra
> property for compatibility but everybody else using 9.0+ servers would
> get the faster startup without any config changes.
>
> If that's acceptable then I think it's a better approach.
>
> [1]: https://github.com/pgjdbc/pgjdbc/pull/144
>
> Regards,
> -- Sehrope Sarkuni
> Founder & CEO | JackDB, Inc. | http://www.jackdb.com/
>
>
What happens when we get an even more Modern Server?

How about 'is9.0PlusServer', or something like it?

Cheers,
Gavin