what is the default connection pool size for the app?
- 
what is the default connection pool size for the app to the database?
 - 
The default pool size is 10. So each FusionAuth node will attempt to open and preserve 10 connections to RDS.
 - 
Also, see
database.maximum-pool-sizehere https://fusionauth.io/docs/v1/tech/reference/configuration