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What is PHP-FPM?

It is an alternative PHP FastCGI implementation with some additional features useful for sites of any size, especially busier sites. It includes Adaptive process spawning, Advanced process management with graceful stop/start, Emergency restart in case of accidental opcode cache destruction etc.
PHP-FPM is a tool in the Background Processing category of a tech stack.

Who uses PHP-FPM?

26 companies reportedly use PHP-FPM in their tech stacks, including Yousign, Modanisa.com, and nefisyemektarifleri.

76 developers on StackShare have stated that they use PHP-FPM.

PHP-FPM Alternatives & Comparisons

What are some alternatives to PHP-FPM?
HHVM (HipHop Virtual Machine)
HHVM uses a just-in-time (JIT) compilation approach to achieve superior performance while maintaining the flexibility that PHP developers are accustomed to. To date, HHVM (and its predecessor HPHPc before it) has realized over a 9x increase in web request throughput and over a 5x reduction in memory consumption for Facebook compared with the PHP 5.2 engine + APC.
Fast, flexible and pragmatic, PHP powers everything from your blog to the most popular websites in the world.
nginx [engine x] is an HTTP and reverse proxy server, as well as a mail proxy server, written by Igor Sysoev. According to Netcraft nginx served or proxied 30.46% of the top million busiest sites in Jan 2018.
The uWSGI project aims at developing a full stack for building hosting services.
Sidekiq uses threads to handle many jobs at the same time in the same process. It does not require Rails but will integrate tightly with Rails 3/4 to make background processing dead simple.
See all alternatives

PHP-FPM's Followers
117 developers follow PHP-FPM to keep up with related blogs and decisions.