Answer
PHP-FPM manages pools of worker processes independently from the web server. It supports scaling, process recycling, chroot isolation, and efficient load balancing. It is faster and more secure compared to mod_php.
Quick Answer
PHP-FPM (FastCGI Process Manager) runs PHP as a separate service with its own process pool. mod_php embeds PHP into Apache and shares its process. PHP-FPM is more efficient: fewer processes, better memory management, works with Nginx, supports dynamic/static/ondemand pool modes, separate config per site, and graceful restarts. PHP-FPM is the modern standard for production PHP deployments.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ