What is the difference between fastcgi and fpm?

php php-7 fastcgi php-7.4 mod-fastcgi
Deepan Chakravarthy picture Deepan Chakravarthy · Dec 24, 2010 · Viewed 125.6k times · Source

I am trying to install php with fpm on macports. I read somewhere that fpm means FastCGI process manager. Does that mean fastcgi and fpm are same? If they are same, then why do we have two different macports variants for php namely "php5 +fastcgi" and "php5 +fpm"

Answer

ircmaxell picture ircmaxell · Dec 24, 2010

FPM is a process manager to manage the FastCGI SAPI (Server API) in PHP.

Basically, it replaces the need for something like SpawnFCGI. It spawns the FastCGI children adaptively (meaning launching more if the current load requires it).

Otherwise, there's not much operating difference between it and FastCGI (The request pipeline from start of request to end is the same). It's just there to make implementing it easier.

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