Summary

In this chapter, you’ve learned about various ways to execute IPC. You got familiar with MQs as simple, real-time, and reliable instruments for sending small chunks of data. We also got into the details of fundamental synchronization mechanisms such as semaphores and mutexes, along with their C++20 interfaces. In combination with shmem, you observed how we could exchange large amounts of data fast. At the end, the network communication through sockets was introduced to you through the main protocols, UDP and TCP.

Complex applications usually rely on multiple IPC techniques to achieve their goals. It’s important to be aware of them – both their strengths and their disadvantages. This will help you decide on your particular implementation. Most of the time, we build layers on top of IPC solutions in order to guarantee the robustness of an application – for example, through retry mechanisms, polling, event-driven designs, and so on. We will revisit...