Node.js 8 the Right Way

Wrapping Up

We covered a lot of ground in this chapter, so let’s review.

Using ØMQ with Node.js gave us an opportunity to install and use a module from npm that included native addon code. This provided a basis for learning about three fundamental microservice messaging patterns: publish/subscribe, push/pull, and request/reply.

To overcome the lockstep nature of ØMQ’s request/reply implementation, we learned how to parallelize requests using a dealer/router pair. This gave us a chance to use JavaScript’s rest parameter syntax to capture variadic function arguments.

You also learned how to fork Node.js processes to create a cluster of cooperating processes. This introduced new challenges like the first-joiner problem and the limited-resource ...