Pool 
Pool is a thread safe connection pool for net.Conn interface. It can be used to manage and reuse connections.
Install and Usage
Install the package with:
go get gopkg.in/fatih/pool.v2Import it with:
import "gopkg.in/fatih/pool.v2"and use pool as the package name inside the code.
Example
// create a factory() to be used with channel based pool
factory := func() (net.Conn, error) { return net.Dial("tcp", "127.0.0.1:4000") }
// create a new channel based pool with an initial capacity of 5 and maximum
// capacity of 30. The factory will create 5 initial connections and put it
// into the pool.
p, err := pool.NewChannelPool(5, 30, factory)
// now you can get a connection from the pool, if there is no connection
// available it will create a new one via the factory function.
conn, err := p.Get()
// do something with conn and put it back to the pool by closing the connection
// (this doesn't close the underlying connection instead it's putting it back
// to the pool).
conn.Close()
// close pool any time you want, this closes all the connections inside a pool
p.Close()
// currently available connections in the pool
current := p.Len()Credits
License
The MIT License (MIT) - see LICENSE for more details