Resource Pooling

Requirements for Resource Pool:

• Allow threads to access resources concurrently
• Should block threads if no resource is available at the moment
• Maintain a pool of initialized resources to allow reuse and avoid costly initialization of resources

Classes from java.util.concurrent package that will be used:

• ConcurrentLinkedQueue - An unbounded thread-safe queue. This collection is ideal to act as container of resources since it provides concurrent non blocking access to its elements.
• Semaphore - Semaphore maintains a set of permits by having a counter. This can be used to acquire or release a permit. If no permits are available then acquire() blocks the invoking thread.

Implementation

Code reference on github: Resource Pooling