PostgreSQL connection pooler for app

For a PostgreSQL app, the most common connection poolers are:

1. PgBouncer

   • Best general-purpose choice
   • Lightweight and widely used
   • Great when your app opens many short-lived connections
   • Works well with most web apps

2. Pgpool-II

   • More feature-rich than PgBouncer
   • Can do pooling, load balancing, and failover
   • Heavier and more complex
   • Useful if you need extra PostgreSQL-aware features

3. Odyssey

   • Modern pooler/proxy
   • Good performance and supports advanced routing features
   • Less common than PgBouncer

Recommendation

• If you just need connection pooling, use PgBouncer.
• If you need pooling + load balancing/failover, consider Pgpool-II.
• If you want a newer, high-performance proxy, look at Odyssey.

Common PgBouncer pooling modes

• session: client gets the same server connection for the whole session
• transaction: server connection is reused after each transaction
• statement: reconnects per statement, very restrictive

For most apps, transaction pooling is the usual choice.

If you want, I can also recommend the best setup for your stack, like Node.js / Django / Rails / Go / Java / Laravel, and give a sample config.