Re: Big table and partition

On 10/15/23 15:46, Rajesh Kumar wrote:
> The columns are id, blocknumber and jsondata.

No date column?

How much json data?

>
> I have not been told anything ABT data retention and I will ask them.
>
> Problem I am trying to resolve is, 30gb is big

Big is relative.  30GB in 2023 is pretty darned small.

> and it will be every growing always. By doing this, i am making the scan
> easier (despite having indexes).
>
>  Growth will be 10gb per year data.

That's less than a gigabyte per month.

>
> Incase I am doing partition, Plz provide any script that does partitioning
> automatically. We are using postgres version 15.

*Keep It Simple, Stanley* and just DELETE WHERE id < /nnnnnnn/;.  Do that
every month.

>
> On Sun, 15 Oct, 2023, 8:07 PM Christophe Courtois,
> <christophe(dot)courtois(at)dalibo(dot)com> wrote:
>
> Hi,
>
> Le 14/10/2023 à 22:46, Rajesh Kumar a écrit :
> > In my env, I have a table 30GB where data is getting inserted directly
> > whenever the new block is created in block chain...
> > I have been asked to do partition, i said manager since we are not at
> > all using the past data, partition is not required. Instead we can stop
> > the sync (downtime not required), change the name of table , create a
> > new table with same structure with original name and keep only tis
> month
> > data. Then sync the blockchain so that new data will come to newly
> > created table and old data will be there simply as a storage as we r
> not
> > selecting any query from old data...
>
> In fact, you want to do manual partitioning.
> Why reinvent the wheel?
>
> > Note: on a longer run, data will keep on coming in whenever new
> block is
> > created.
> > Is that right ? Any suggestions ? Better options ?
>
> What problem do you have to solve? 30 GB is not so big, but since when
> do you store data? Will you purge the table? What is the main access key
> of your queries (critical for the partitioning key)?
>
> Without other information I'd say that if you never read the former
> months again, partition by month, perhaps by year.
>
> --
> Christophe Courtois
> Consultant DALIBO
>

--
Born in Arizona, moved to Babylonia.