Again... Someone just chucks out a link like it has the solution but it like going down the rabbit hole without a guide.
Sorry if this is not going to be the magic bullet answer you want, but installing modules and daemons on a server has consequences.
If you have a server with the CSF/lfd installed, and then install memcached or PHP-FPM (or vice versa) you shouldn't be surprised if the consequence
is that CSF/lfd starts sending you emails about a process it knows nothing about. It is up to you to either tell CSF/lfd that the process is OK and to ignore it, or for you to decide that the process is not authorised and to expunge it.
Similarly, if you decide to use CSF/lfd and as a consequence
you start getting excessive resource usage warnings, it is up to you to decide if the warnings are justified, and either configure CSF/lfd to report based on your particular hardware configuration, or to investigate the warnings and configure the systems that are provoking them to use less resources.
In every event, it is better to research and understand what the consequences
of any configuration, action, addition or removal of software on a server might be before
crashing in and doing it. Every server administrator on this forum was a beginner once upon a time, and the honest ones will admit to learning something new every day. You can easily avoid making mistakes by reading about the experiences and mistakes that other people made, and not repeating them yourself.
Attributed as a variant of the original by George Santayana
Those who fail to learn from the mistakes of their predecessors are destined to repeat them.