RFC: mongo "_id" fields in the multi-environment juju server world

[Gustavo Niemeyer]

On Mon, Jul 7, 2014 at 10:09 AM, roger peppe <roger.peppe at canonical.com> wrote:
> I had assumed that because every client needs to see every transaction
> there would likely be no benefit to sharding the log, although
> technically you could shard on transaction id. I'd be

Clients don't need to see every transaction. Only those that affect
the documents they are acting on.

> Thanks for pointing this out. If we manage to hugely scale juju using mongodb
> I will be very happy. I still think we should do some measurements to
> convince us that we actually have some hope of doing so though.
> My own measurements left me less than convinced of the
> possibility, although it's been a while since I did them.

When you measured a sharded setup, what was the outcome?


gustavo @ http://niemeyer.net