Thread: Does aurora PostgreSQL use wal_buffers?
Hi,
Can someone shed some light as to whether aurora postgres uses wal buffers or not? Given the way the writes are handled differently, I would like to understand the same while it is being said in the documentation not to change the parameter from the default value of 16MB.
Thanks in Advance!
Thanks,
Goti
Hi, On Sun, Feb 06, 2022 at 05:24:37PM +0530, Goti wrote: > > Can someone shed some light as to whether aurora postgres uses wal buffers > or not? Given the way the writes are handled differently, I would like to > understand the same while it is being said in the documentation not to > change the parameter from the default value of 16MB. It's unlikely that any one here can answer the question. You should ask Amazon, not us.
Sure Julien. I will ask Amazon too. My intention was just to gather this info IN CASE if someone has already an idea on this. Does that mean that I should not be posting Aurora postgres related questions/ doubts here? Please correct me if I am wrong!
Thanks,
Goti
On Sun, Feb 6, 2022 at 6:55 PM Julien Rouhaud <rjuju123@gmail.com> wrote:
Hi,
On Sun, Feb 06, 2022 at 05:24:37PM +0530, Goti wrote:
>
> Can someone shed some light as to whether aurora postgres uses wal buffers
> or not? Given the way the writes are handled differently, I would like to
> understand the same while it is being said in the documentation not to
> change the parameter from the default value of 16MB.
It's unlikely that any one here can answer the question. You should ask Amazon,
not us.
If memory serves, WAL is used for data streams if enabled. Replication is done at storage layer within region. Specific question can be sent to SA or Product team through your account representative.
"
wal_buffers
WAL buffers are used to hold write ahead log (WAL) records that aren’t yet written to storage. The size of the WAL buffer cache is controlled by the wal_buffers setting. Aurora uses a log-based storage engine and changes are sent to storage nodes for persistence. Given the difference in how writes are handled by the Aurora storage engine, this parameter should be left unchanged when using Aurora PostgreSQL.
"
Additional information con changes and architecture can be found in this talk: https://m.youtube.com/watch?v=Ul-j5fKfv2k
Best regards,
Dan Smith
On Sun, Feb 6, 2022, 09:44 Goti <aryan.goti@gmail.com> wrote:
Sure Julien. I will ask Amazon too. My intention was just to gather this info IN CASE if someone has already an idea on this. Does that mean that I should not be posting Aurora postgres related questions/ doubts here? Please correct me if I am wrong!Thanks,GotiOn Sun, Feb 6, 2022 at 6:55 PM Julien Rouhaud <rjuju123@gmail.com> wrote:Hi,
On Sun, Feb 06, 2022 at 05:24:37PM +0530, Goti wrote:
>
> Can someone shed some light as to whether aurora postgres uses wal buffers
> or not? Given the way the writes are handled differently, I would like to
> understand the same while it is being said in the documentation not to
> change the parameter from the default value of 16MB.
It's unlikely that any one here can answer the question. You should ask Amazon,
not us.
On Sun, Feb 06, 2022 at 07:13:42PM +0530, Goti wrote: > Sure Julien. I will ask Amazon too. My intention was just to gather this > info IN CASE if someone has already an idea on this. Does that mean that I > should not be posting Aurora postgres related questions/ doubts here? Those mailing list are supposed to be about vanilla postgres only, or some closely related open source projects. For proprietary software, the best answer you usually get is a link to the documentation, so you probably should read their documentation directly to save some time.
If you can't find it in the documentation, then dba.stackexchange would be the place to ask.
On 2/6/22 7:43 AM, Goti wrote:
Sure Julien. I will ask Amazon too. My intention was just to gather this info IN CASE if someone has already an idea on this. Does that mean that I should not be posting Aurora postgres related questions/ doubts here? Please correct me if I am wrong!Thanks,GotiOn Sun, Feb 6, 2022 at 6:55 PM Julien Rouhaud <rjuju123@gmail.com> wrote:Hi,
On Sun, Feb 06, 2022 at 05:24:37PM +0530, Goti wrote:
>
> Can someone shed some light as to whether aurora postgres uses wal buffers
> or not? Given the way the writes are handled differently, I would like to
> understand the same while it is being said in the documentation not to
> change the parameter from the default value of 16MB.
It's unlikely that any one here can answer the question. You should ask Amazon,
not us.
--
Angular momentum makes the world go 'round.
Angular momentum makes the world go 'round.
Thanks a lot Dan , Julien and Ron for your inputs.
On Sun, 6 Feb 2022 at 8:51 PM, Ron <ronljohnsonjr@gmail.com> wrote:
If you can't find it in the documentation, then dba.stackexchange would be the place to ask.On 2/6/22 7:43 AM, Goti wrote:Sure Julien. I will ask Amazon too. My intention was just to gather this info IN CASE if someone has already an idea on this. Does that mean that I should not be posting Aurora postgres related questions/ doubts here? Please correct me if I am wrong!Thanks,GotiOn Sun, Feb 6, 2022 at 6:55 PM Julien Rouhaud <rjuju123@gmail.com> wrote:Hi,
On Sun, Feb 06, 2022 at 05:24:37PM +0530, Goti wrote:
>
> Can someone shed some light as to whether aurora postgres uses wal buffers
> or not? Given the way the writes are handled differently, I would like to
> understand the same while it is being said in the documentation not to
> change the parameter from the default value of 16MB.
It's unlikely that any one here can answer the question. You should ask Amazon,
not us.--
Angular momentum makes the world go 'round.
Thanks,
Goti