Chapter 1: How Systems Handle C10M — Linux epoll, io_uring & Go Netpoller
Answer-first: Building a C10M-capable Golang backend requires bypassing OS kernel bottlenecks through three core architectural shifts: replacing standard network syscalls with io_uring and eBPF/XDP, utilizing Go netpoller with fixed worker pools to eliminate unbounded goroutine scheduling overhead, and pre-allocating zero-allocation memory slabs via sync.Pool to keep garbage collection stop-the-world pauses strictly below three hundred microseconds. Prerequisite: Advanced understanding of Linux system calls, network socket lifecycles, operating system memory management, and Go concurrency primitives (goroutines, channels, and runtime netpoller) is required. ...