Thanks Ravi for the clarification, we will go ahead with "synchronous_commit=off".
On Wed, Jan 16, 2019 at 10:47 AM Ravi Krishna <srkris...@fastmail.com> wrote: > Sorry I misunderstood. The term "read consistency" is generally used > either in the context of isolation level or in the context of slaves. > > We don't have standby instance, as I have mentioned we are using just one > instance of postgres serving local clients running on the same machine, do > you know in this case what is the behavior ? > > > You are good. All transactions update buffer cache too, along with WAL > buffer and hence other sessions can immediately see the changes. > synchronous_commit=off will only reduce the fsync calls, which makes them > less crash safe, but the database consistency is not compromised. > > > > >