Re: [EXTERNAL] Re: Support load balancing in libpq

On Wed, Sep 14, 2022 at 7:54 AM Maxim Orlov <orlovmg(at)gmail(dot)com> wrote:
> For the patch itself, I think it is better to use a more precise time function in libpq_prng_init or call it only once.
> Thought it is a special corner case, imagine all the connection attempts at first second will be seeded with the save
> value, i.e. will attempt to connect to the same host. I think, this is not we want to achieve.

Just a quick single-issue review, but I agree with Maxim that having
one PRNG, seeded once, would be simpler -- with the tangible benefit
that it would eliminate weird behavior on simultaneous connections
when the client isn't using OpenSSL. (I'm guessing a simple lock on a
global PRNG would be less overhead than the per-connection
strong_random machinery, too, but I have no data to back that up.) The
test seed could then be handled globally as well (envvar?) so that you
don't have to introduce a debug-only option into the connection
string.

Overall, I like the concept.

--Jacob