Wrapping Up
Get an overview of what we've learned so far.
We'll cover the following
Completing this chapter was not an easy task, so well done! Learning to use GenServer
correctly will open the doors to building highly concurrent and performant applications without the complexity we see in other programming languages. GenServer
is a versatile tool, and we’ll reach for it often when doing work concurrently.
GenServer
callbacks
In this chapter, we learned about the most common callbacks used when implementing the GenServer
behaviour. We learned to use each callback, interact with the process while it’s still running, and use the process state.
Supervisors
We can start processes at runtime using DynamicSupervisor
or build our own supervisor when needed.
Use the Registry
to manage large processes
Finally, we saw how the Registry
can make registering and managing large numbers of running processes a breeze.
Limit concurrency
The last thing we added to our job-processing system was the ability to limit concurrency. This is because running a high volume of concurrent jobs can potentially overwhelm our system, especially when the work requires numerous system resources.
Get hands-on with 1400+ tech skills courses.