This project has been discontinued, and I will no longer be maintaining it. Take a look at HikariCP or Stormpot instead.
NanoPool is a lightweight and highly scalable JDBC2 connection pool.
By "highly scalable" is meant that NP scales very well (hopefully linearly) to hundreds of concurrent threads, and with a very low constant-time overhead.
This means that thread contention will be on the size of the pool (or the JDBC driver, or the database, or..) as oppose to the internal implementation of the connection pool.
Apache 2.0