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Re: Request for a discusison: A fine-grained concurrent ring buffer mode for IO_CACHE


Hello Sergei,

On Wed, 19 May 2021 at 16:22, Sergey Petrunia <sergey@xxxxxxxxxxx> wrote:

> Hi Nikita,
> So, this is targeting only the scenario with multiple producers and one
> consumer?
> Mostly, yes. Because of the log format the transactions can't be read out
in parallel.
(Or does GTID_EVENT or something else store the length of transaction in
the log?)

> I see SEQ_READ_APPEND is only used for Relay Log on the slave. Afaiu, the
> relay
> log has only only one producer, the network io thread.  Do I miss something
> here? Please clarify.
> Right, therefore only single-producer case can be applied to the
We have one scenario on ES with multiple producers though.

Yours truly,
Nikita Malyavin