Worker Pools
Explore how to implement worker pools in Go using goroutines and buffered channels to handle multiple jobs concurrently. Understand the use of client and result structures, channel communication, and controlling parallelism to build efficient Go applications that manage workloads without excessive resource use. This lesson helps you grasp practical concurrency patterns for real-world Go programming.
We'll cover the following...
What is a worker pool?
A worker pool is a set of threads that process jobs assigned to them. The Apache web server and the net/http package of Go more or less work this way: the main process accepts all incoming requests, which are forwarded to worker processes to get served. Once a worker process has finished its job, it is ready to serve a new client. Because Go does not have threads, the presented implementation is going to use goroutines instead of threads. Additionally, threads do not usually die after serving a request because the cost of ending a thread and creating a new one is too high, whereas goroutines do die after finishing their job. Worker pools in Go are implemented with the help of buffered channels because they allow us to limit the number ...