#Rust

A deep systems engineering guide to memory allocators in multi-threaded backends: why glibc malloc suffers from lock contention and fragmentation, the internal architecture of jemalloc, mimalloc, and TCMalloc (thread-local caches, arenas, slab bins), and benchmarks in Rust and C++.

A deep systems engineering breakdown of Linux asynchronous I/O: why epoll hits a syscall scalability wall at millions of IOPS, the lockless dual-ring buffer architecture of io_uring (SQ & CQ), zero-syscall I/O with SQPOLL, registered buffers, and building high-concurrency network servers in C and Rust.