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# Hitch architecture
Hitch uses a process-per-core model; a parent process spawns N children who
each `accept()` on a common socket to distribute connected clients among them.
Within each child, asynchronous socket I/O is conducted across the local
connections using `libev` and `OpenSSL`'s nonblocking API. By default,
`hitch` has an overhead of ~200KB per connection--it preallocates
some buffer space for data in flight between frontend and backend.
`hitch` has very few features--it's designed to be paired with an intelligent
backend like Varnish Cache. It maintains a strict 1:1 connection pattern
with this backend handler so that the backend can dictate throttling behavior,
maximum connection behavior, availability of service, etc.
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