Concurrent Worker Pool with Goroutines

Introduction

This challenge demonstrates how to implement a worker pool using goroutines and channels.

Skills Graph

Worker Pools

Implement a worker pool that receives work on the jobs channel and sends the corresponding results on the results channel. The worker pool should have multiple concurrent instances, and each worker should sleep for a second per job to simulate an expensive task.

Requirements

• Use goroutines and channels to implement the worker pool.
• The worker pool should have multiple concurrent instances.
• Each worker should sleep for a second per job to simulate an expensive task.
• The worker pool should receive work on the jobs channel and send the corresponding results on the results channel.

Example

## Our running program shows the 5 jobs being executed by
## various workers. The program only takes about 2 seconds
## despite doing about 5 seconds of total work because
## there are 3 workers operating concurrently.
$ time go run worker-pools.go
worker 1 started job 1
worker 2 started job 2
worker 3 started job 3
worker 1 finished job 1
worker 1 started job 4
worker 2 finished job 2
worker 2 started job 5
worker 3 finished job 3
worker 1 finished job 4
worker 2 finished job 5

real 0m2.358s

Summary

This challenge demonstrated how to implement a worker pool using goroutines and channels. The worker pool receives work on the jobs channel and sends the corresponding results on the results channel. Each worker sleeps for a second per job to simulate an expensive task.