I will ask again: where in the code is the asynchronous replication code?
The docs are not detailed/exact enough.

> > Main question:  I want to understand very precisely the exact algirithm
> used in PG to do asynchronous streaming replication. Eg, I want to know how
> the record is written and flushed to the socket and how that happens in
> time w.r.t WAL-to-disk and response to client. Will someone please give me
> a head start as to where to begin my code-spelunking?
> >
> WAL synced to disc, then everything else is happening.
> http://www.postgresql.org/docs/9.5/static/warm-standby.html#STREAMING-REPLICATION
> ---
> Stas Kelvich
> Postgres Professional: http://www.postgrespro.com
> Russian Postgres Company

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