On Thursday, May 9, 2024, Dave Cramer <davecra...@gmail.com> wrote: > Greetings, > > The JDBC driver is currently keeping a per connection cache of types in > the driver. We are seeing cases where the number of columns is quite high. > In one case Prevent fetchFieldMetaData() from being run when unnecessary. > · Issue #3241 · pgjdbc/pgjdbc (github.com) > <https://github.com/pgjdbc/pgjdbc/issues/3241> 2.6 Million columns. > > If we knew that we were connecting to the same database we could use a > single cache across connections. > > I think we would require a server/database identifier in the startup > message. >
I feel like pgbouncer ruins this plan. But maybe you can construct a lookup key from some combination of data provided by these functions: https://www.postgresql.org/docs/current/functions-info.html#FUNCTIONS-INFO-SESSION David J.
