Setup pgbouncer connection pooling for PostgreSQL on CentOS/RedHat/Fedora
Install on RedHat-based system.
How to Set Up PgBouncer for Postgres Plus Standard Server
Good overview of PgBouncer concepts.
What is the point of bouncing?
Discusses diffenrences between pooling modes.
Project page at GitHub
Issue tracker at GitHub
PgBouncer section at Stack Overflow
Chat room at Gitter