npgsql 连接池重复认证

Question

I'm using Npgsql.EntityFrameworkCore.PostgreSQL 2.1.2, EfCore 2.2, asp.net 3.1.

Connection pooling is enabled (not passing it in the connection string). After enabling logging I'm getting logs like this:

2021-05-19 10:23:21.542 +02:00 Opening connection...
2021-05-19 10:23:21.545 +02:00 Attempting to connect to xxx.xxx.xxx.xxx:5432
2021-05-19 10:23:21.595 +02:00 Socket connected to xxx.xxx.xxx.xxx:5432
2021-05-19 10:23:21.597 +02:00 Authenticating...
2021-05-19 10:23:21.914 +02:00 A PostgreSQL type with the name hstore was not found in the database
2021-05-19 10:23:21.916 +02:00 A PostgreSQL type with the name citext was not found in the database
2021-05-19 10:23:21.918 +02:00 A PostgreSQL type with the name unknown was not found in the database
2021-05-19 10:23:21.921 +02:00 Opened connection to xxx.xxx.xxx.xxx:5432

This behavior is repeated for each query that's performed. As you can see, it seems that each time it performs a new authentication (it takes 300ms). Seen like this is seems that connection pooling is not working since I expect the connection to be reused each time. I also tryed to add dbcontextpooling, the result stays the same. Any hint?

Answer 1

My Bad, I found out that each time a connection was closed we were emptying the pool explicitly:(