In the last days, my developer was working with different kinds of databases.
He uses a database, named TimeScale DB (Timescale). This is the plugin of a famous SQL database PostgreSQL.

He imports the same data in PostgreSQL and timescale DB.

Size in Timescale DB is = 24KB
Size in Simple PostgreSQL = 166MB

This is the record of 1000000 rows, 12 columns.

Data fetching is the same on both databases, But if we fetch time-based data, (e.g 2 days, 24 hours, From Date to Date) we have a 50% to 200% difference depending on the query. python3 & elixir is also working fine with DB.

Results are also nearly the same with InfluxDB.

For a specific use-case, we have software that is handling Simple and time-series data at the same time. If anyone wants to suggest something new, Also tell us.