Apache Commons Pool

Pool provides an Object-pooling API, with three major aspects:

1. A generic object pool interface that clients and implementors can use to provide easily interchangable pooling implementations.
2. A toolkit for creating modular object pools.
3. Several general purpose pool implementations.

• c3p0: JDBC DataSources & Resource Pools
• Primrose
• DDConnectionBroker
• Apache DBCP
• Proxool
• SmartPool
• DBPool - Java Database Connection Pooling
• XAPool