NGINX version 1.9.11 introduces dynamic modules, separate shared object files that can optionally be loaded at runtime.
Andrew Hutchings

Andrew is a Developer Advocate and Systems Software Engineer specializing in open source Linux-based software. He’s worked on many popular open source projects in various roles, including OpenStack, Drizzle, and MySQL. He’s known to many as LinuxJedi.
Using New Debugging Features to Probe NGINX Internals
Learn how to use GDB to probe NGINX internals – you can write the debug log in memory and dump the active NGINX configuration
NGINX 1.9.2 Released
Learn about all the new features in NGINX 1.9.2: improvements to TCP load balancing, email proxy, and more
Socket Sharding in NGINX Release 1.9.1
Learn how enabling the SO_REUSEPORT socket option, newly supported in NGINX 1.9.1, can improve performance by load balancing connections across workers