What is Object Pooling?

[Lemosys]

Pooling basically means utilizing the resources efficiently,by limiting access of the objects to only the period the client requires it.

Increasing utilization through pooling usually increases system performance.
Object pooling is a way to manage access to a finite set of objects among competing clients.
In other words,object pooling is nothing but sharing of objects between different clients.

Since object pooling allows sharing of objects ,the other clients/processes need to re-instantiate the object(which decreases the load time), instead they can use an existing object.
After the usage , the objects are returned to the pool.