Re: Load a csv or a avro?

On Fri, Jul 5, 2024 at 5:08 AM sud <suds1434@gmail.com> wrote:

> Hello all,
>
> Its postgres database. We have option of getting files in csv and/or in
> avro format messages from another system to load it into our postgres
> database. The volume will be 300million messages per day across many files
> in batches.
>
> My question was, which format should we chose in regards to faster data
> loading performance ?
>

What application will be loading the data?   If psql, then go with CSV;
COPY is *really* efficient.

If the PG tables are already mapped to the avro format, then maybe avro
will be faster.

> and if any other aspects to it also should be considered apart from just
> loading performance?
>

If all the data comes in at night, drop as many indices as possible before
loading.

Load each file in as few DB connections as possible: the most efficient
binary format won't do you any good if you open and close a connection for
each and every row.