I have only one table with 4 columns.
the problem is that y load many data in this table like 30 millions of rows and do many select and updates at same time.
so I need found the best config for postgres for this tasks (many updates/select at same time)
I need increase the users that can be connected at same time and use more ram for do this updates and queries more faster.
If you want change the db to others like NoSQL or a faster db system we can talk about this.