Processes

Running a web application is essentially running a suite of related programs concurrently as processes. Spawning a program process can be as simple as typing its name into a terminal, but how do we ensure that this program won't stop at some point? We need to take a closer look at what Linux processes are and how to bring them back to life from failures.Apart from leveraging systemd as a process manager, we'll explore system resources like CPU and virtual memory, monitoring processes, and scheduling recurring programs' runs. Learning how to debug any Linux process by inspecting emitted system calls will make us a little bit more confident to face production issues in the future.