[erlang-questions] If you make WhatsApp today...

Tristan Sloughter <>
Mon Oct 12 15:14:36 CEST 2015

I'd love to see the postgres one even if it was just experimental.
Someone else might take it up and continue with it.

Tristan Sloughter

On Mon, Oct 12, 2015, at 04:13 AM, Richard Carlsson wrote:
> On Mon, Oct 12, 2015 at 8:03 AM, Ulf Wiger <> wrote:
>> * They stopped playing around and are now using ‘mnesia_ext’ with a leveldb backend
> Correct, we have been using leveldb as a backend for mnesia for some time now, and it works very well. The space savings (both on disk and in memory) are enormous.
>> As I understand it, Klarna will publish the leveldb backend (the pgsql backend was an experiment, so I don’t know about that).
> We intended to do this sooner, but as usual, we've been kept busy with more pressing things. There is one major performance-improving change that we want to do before we push this out, so that people don't start relying on the old behaviour. Hope to have this done soonish.
>     /Richard
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