Re: performance problem of Failover Datasource?

> Feel free to send us a patch.

OK,I will make the patch soon.

--
Best Regards,
Chen Huajun

(2012/12/14 5:01), Dave Cramer wrote:
> Feel free to send us a patch.
>
> Dave
>
> Dave Cramer
>
> dave.cramer(at)credativ(dot)ca
> http://www.credativ.ca
>
>
>
> On Thu, Dec 13, 2012 at 6:42 AM, Chen Huajun <chenhj(at)cn(dot)fujitsu(dot)com <mailto:chenhj(at)cn(dot)fujitsu(dot)com>> wrote:
>
> Hi All,
>
>
> In the latest jdbc driver,multi backends can be assigned in the URL as following.
>
> >With latest jdbc drivers you can simply configure multiple host:port pairs in the url separated by comma:
> >jdbc:postgresql://host1: port1,host2:port2/test
> >It has only the most basic failover support. When a new connection is opened the hosts are tried in round-robin until a connection is successfully established.
>
> But there is a performance problem .if the first host is down,
> all connecting must be blocked until connect timeout at first,
> and then try connect to the next host.
>
> Why not adjust the order of hosts dynamically?
> For excample, after a successful connecting,if the target host is not the first host,
> swap the target host and the first host.
> And then subsequent connecting will try the most suitable host at first.
>
>
> --
> Best Regards，
> Chen Huajun
> (2012/12/12 17:09), kaprikorn07 wrote:
>
> Hi All,
>
> As Bruce Adams has mentioned, please let me know if there is any other way
> to do it other than pgBouncer and pgPool.
>
> Please help!
>
>
>
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