The Prefork server model gets dismissed as “old school”. I think that’s wrong – especially on Linux.
With SO_REUSEPORT, the kernel distributes incoming connections across multiple pre-forked worker processes natively. No thread contention. No shared memory complexity. Each worker is an isolated process – a crash stays contained.

What you get:
– True process isolation per connection
– Kernel-level load balancing, no userspace overhead
– Predictable memory footprint
– Simpler security boundaries between workers

In a world obsessed with async event loops, we forget that prefork scales surprisingly well for workloads with high per-connection compute and where isolation actually matters – think security-sensitive services.
SO_REUSEPORT didn’t just fix the thundering herd problem. It quietly gave prefork a second life.
More on this soon.
#linux #infosec #networking #serversecurity #prefork