(The article goes a bit above my head so my excuses if I am a bit off-topic)
There is a form of query plan caching in PG: for prepared statements, if PG determines that the actual value of parameters won't affect the query plan much, it uses a "generic plan" so that it reuses the same query plan for every execution of the prepared statement (https://www.postgresql.org/docs/current/sql-prepare.html, see "notes")
There is a form of query plan caching in PG: for prepared statements, if PG determines that the actual value of parameters won't affect the query plan much, it uses a "generic plan" so that it reuses the same query plan for every execution of the prepared statement (https://www.postgresql.org/docs/current/sql-prepare.html, see "notes")