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Why this exists The simple way to serve a network client is one thread or process per connection, which stops scaling at thousands of clients. nginx, Redis, HAProxy and Node.js instead use one loop that asks the kernel…
A Tiny TCP Server with epoll: Event-Driven I/O for Many Connections
The architecture behind nginx and Redis: one thread, non-blocking sockets and epoll to serve many connections. Builds an echo server that accepts clients, reads and replies without blocking, and handles disconnects and errors correctly.
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