A crash-unsafe database is for data you don't care about.


On 1/16/19 2:27 AM, pshadangi wrote:
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 <mailto: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.



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